//----------------------------------------------------------------------------
void BouncingBall::CreateFloor ()
{
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT2, 0);
int vstride = vformat->GetStride();
VertexBuffer* vbuffer = new0 VertexBuffer(4, vstride);
VertexBufferAccessor vba(vformat, vbuffer);
const float xExtent = 8.0f;
const float yExtent = 16.0f;
const float zValue = 0.0f;
vba.Position<Float3>(0) = Float3(-xExtent, -yExtent, zValue);
vba.Position<Float3>(1) = Float3(+xExtent, -yExtent, zValue);
vba.Position<Float3>(2) = Float3(+xExtent, +yExtent, zValue);
vba.Position<Float3>(3) = Float3(-xExtent, +yExtent, zValue);
vba.TCoord<Float2>(0, 0) = Float2(0.0f, 0.0f);
vba.TCoord<Float2>(0, 1) = Float2(1.0f, 0.0f);
vba.TCoord<Float2>(0, 2) = Float2(1.0f, 1.0f);
vba.TCoord<Float2>(0, 3) = Float2(0.0f, 1.0f);
IndexBuffer* ibuffer = new0 IndexBuffer(6, sizeof(int));
int* indices = (int*)ibuffer->GetData();
indices[0] = 0; indices[1] = 1; indices[2] = 2;
indices[3] = 0; indices[4] = 2; indices[5] = 3;
mFloor = new0 TriMesh(vformat, vbuffer, ibuffer);
std::string path = Environment::GetPathR("Floor.wmtf");
Texture2D* texture = Texture2D::LoadWMTF(path);
mFloor->SetEffectInstance(Texture2DEffect::CreateUniqueInstance(texture,
Shader::SF_LINEAR, Shader::SC_REPEAT, Shader::SC_REPEAT));
}
//----------------------------------------------------------------------------
TriMesh *ScreenTarget::CreateRectangle (VertexFormat* vformat,
float xMin, float xMax, float yMin, float yMax, float zValue)
{
if (!ValidFormat(vformat))
return 0;
Float2 tc0, tc1, tc2, tc3;
tc0 = Float2(0.0f, 0.0f);
tc1 = Float2(1.0f, 0.0f);
tc2 = Float2(1.0f, 1.0f);
tc3 = Float2(0.0f, 1.0f);
int vstride = vformat->GetStride();
VertexBuffer* vbuffer = new0 VertexBuffer(4, vstride);
VertexBufferAccessor vba(vformat, vbuffer);
vba.Position<Float3>(0) = Float3(xMin, yMin, zValue);
vba.Position<Float3>(1) = Float3(xMax, yMin, zValue);
vba.Position<Float3>(2) = Float3(xMax, yMax, zValue);
vba.Position<Float3>(3) = Float3(xMin, yMax, zValue);
vba.TCoord<Float2>(0, 0) = tc0;
vba.TCoord<Float2>(0, 1) = tc1;
vba.TCoord<Float2>(0, 2) = tc2;
vba.TCoord<Float2>(0, 3) = tc3;
// 为square创建IndexBuffer
IndexBuffer* ibuffer = new0 IndexBuffer(6, sizeof(int));
int* indices = (int*)ibuffer->GetData();
indices[0] = 0; indices[1] = 1; indices[2] = 2;
indices[3] = 0; indices[4] = 2; indices[5] = 3;
return new0 TriMesh(vformat, vbuffer, ibuffer);
}
//----------------------------------------------------------------------------
Billboard::Billboard () :
mIsDynamic(true),
mIsUseTexAsSize(false),
mIsDoAlphaDisAfterStop(true),
mDoAlphaDisAfterStopSpeed(0.5f),
mIsUseTrim(false)
{
SetTex("Data/engine/default.png");
mAnchorPoint = Float2(0.5f, 0.5f);
SetLocal(true);
SetDynamic(mIsDynamic);
IndexBuffer *iBuffer = new0 IndexBuffer(6, 2, Buffer::BU_STATIC);
unsigned short *indices = (unsigned short*)iBuffer->GetData();
unsigned short v0 = 0;
unsigned short v1 = 1;
unsigned short v2 = 2;
unsigned short v3 = 3;
*indices++ = v0;
*indices++ = v1;
*indices++ = v2;
*indices++ = v1;
*indices++ = v3;
*indices++ = v2;
SetIndexBuffer(iBuffer);
mEffectableCtrl = new0 BillboardController();
mEffectableCtrl->SetName("BillboardController");
AttachController(mEffectableCtrl);
}
//----------------------------------------------------------------------------
TriMesh* PolyhedronDistance::CreatePlane ()
{
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT3, 0);
int vstride = vformat->GetStride();
VertexBuffer* vbuffer = new0 VertexBuffer(4, vstride);
VertexBufferAccessor vba(vformat, vbuffer);
float size = 16.0f;
vba.Position<Float3>(0) = Float3(-size, -size, -0.1f);
vba.Position<Float3>(1) = Float3(+size, -size, -0.1f);
vba.Position<Float3>(2) = Float3(+size, +size, -0.1f);
vba.Position<Float3>(3) = Float3(-size, +size, -0.1f);
vba.Color<Float3>(0, 0) = Float3(0.0f, 0.50f, 0.00f);
vba.Color<Float3>(0, 1) = Float3(0.0f, 0.25f, 0.00f);
vba.Color<Float3>(0, 2) = Float3(0.0f, 0.75f, 0.00f);
vba.Color<Float3>(0, 3) = Float3(0.0f, 1.00f, 0.00f);
IndexBuffer* ibuffer = new0 IndexBuffer(6, sizeof(int));
int* indices = (int*)ibuffer->GetData();
indices[0] = 0; indices[1] = 1; indices[2] = 2;
indices[3] = 0; indices[4] = 2; indices[5] = 3;
TriMesh* mesh = new0 TriMesh(vformat, vbuffer, ibuffer);
mesh->SetEffectInstance(VertexColor3Effect::CreateUniqueInstance());
return mesh;
}
//----------------------------------------------------------------------------
void BouncingSpheres::CreateBackWall ()
{
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT3, 0);
int vstride = vformat->GetStride();
Float3 backWallColor(209.0f/255.0f, 204.0f/255.0f, 180.0f/255.0f);
VertexBuffer* vbuffer = new0 VertexBuffer(4, vstride);
VertexBufferAccessor vba(vformat, vbuffer);
vba.Position<Float3>(0) = Float3(1.0f, 1.0f, 1.0f);
vba.Position<Float3>(1) = Float3(1.0f, 20.0f, 1.0f);
vba.Position<Float3>(2) = Float3(1.0f, 20.0f, 17.0f);
vba.Position<Float3>(3) = Float3(1.0f, 1.0f, 17.0f);
vba.Color<Float3>(0, 0) = backWallColor;
vba.Color<Float3>(0, 1) = backWallColor;
vba.Color<Float3>(0, 2) = backWallColor;
vba.Color<Float3>(0, 3) = backWallColor;
IndexBuffer* ibuffer = new0 IndexBuffer(6, sizeof(int));
int* indices = (int*)ibuffer->GetData();
indices[0] = 0; indices[1] = 1; indices[2] = 2;
indices[3] = 0; indices[4] = 2; indices[5] = 3;
mBackWall = new0 TriMesh(vformat, vbuffer, ibuffer);
mBackWall->SetEffectInstance(VertexColor3Effect::CreateUniqueInstance());
}
//----------------------------------------------------------------------------
void Fluids3D::UpdateIndexBuffer ()
{
VertexBufferAccessor vba(mCube);
APoint camPos = mCamera->GetPosition();
const int numTriangles = mNumIndices/3;
int* currentIndex = mIndices;
mTriangles.clear();
for (int t = 0; t < numTriangles; ++t)
{
Triangle tri;
tri.mIndex0 = *currentIndex++;
tri.mIndex1 = *currentIndex++;
tri.mIndex2 = *currentIndex++;
#ifdef USE_PARTICLES
float alpha = vba.Color<Float4>(0, tri.mIndex0)[3];
if (alpha == 0.0f)
{
continue;
}
#else
float alpha0 = vba.Color<Float4>(0, tri.mIndex0)[3];
float alpha1 = vba.Color<Float4>(0, tri.mIndex1)[3];
float alpha2 = vba.Color<Float4>(0, tri.mIndex2)[3];
if (alpha0 == 0.0f && alpha1 == 0.0f && alpha2 == 0.0f)
{
continue;
}
#endif
Vector3f scaledCenter =
vba.Position<Vector3f>(tri.mIndex0) +
vba.Position<Vector3f>(tri.mIndex1) +
vba.Position<Vector3f>(tri.mIndex2);
APoint output = mCube->WorldTransform*APoint(scaledCenter);
AVector diff = output - camPos;
tri.mNegSqrDistance = -diff.SquaredLength();
mTriangles.insert(tri);
}
IndexBuffer* ibuffer = mCube->GetIndexBuffer();
int* indices = (int*)ibuffer->GetData();
ibuffer->SetNumElements(3*(int)mTriangles.size());
std::multiset<Triangle>::iterator iter = mTriangles.begin();
std::multiset<Triangle>::iterator end = mTriangles.end();
for (/**/; iter != end; ++iter)
{
*indices++ = iter->mIndex0;
*indices++ = iter->mIndex1;
*indices++ = iter->mIndex2;
}
mRenderer->Update(ibuffer);
}
//----------------------------------------------------------------------------
void ClipMesh::Update ()
{
// Transform the model-space vertices to world space.
int numVertices = (int)mTorusVerticesMS.size();
int i;
for (i = 0; i < numVertices; ++i)
{
mTorusVerticesWS[i] = mTorus->LocalTransform*mTorusVerticesMS[i];
}
// Partition the torus mesh.
std::vector<APoint> clipVertices;
std::vector<int> negIndices, posIndices;
PartitionMesh(mTorusVerticesWS, mTorusIndices, mPlane, clipVertices,
negIndices, posIndices);
// Replace the torus vertex buffer.
numVertices = (int)clipVertices.size();
int stride = mTorus->GetVertexFormat()->GetStride();
VertexBuffer* vbuffer = new0 VertexBuffer(numVertices, stride,
Buffer::BU_STATIC);
mTorus->SetVertexBuffer(vbuffer);
VertexBufferAccessor vba(mTorus);
Float3 black(0.0f, 0.0f, 0.0f);
for (i = 0; i < numVertices; ++i)
{
// Transform the world-space vertex to model space.
vba.Position<Float3>(i) =
mTorus->LocalTransform.Inverse()*clipVertices[i];
vba.Color<Float3>(0, i) = black;
}
// Modify the vertex color based on which mesh the vertices lie.
int negQuantity = (int)negIndices.size();
for (i = 0; i < negQuantity; ++i)
{
vba.Color<Float3>(0, negIndices[i])[2] = 1.0f;
}
int posQuantity = (int)posIndices.size();
for (i = 0; i < posQuantity; ++i)
{
vba.Color<Float3>(0, posIndices[i])[0] = 1.0f;
}
// To display the triangles generated by the split.
int numIndices = negQuantity + posQuantity;
IndexBuffer* ibuffer = new0 IndexBuffer(numIndices, sizeof(int));
mTorus->SetIndexBuffer(ibuffer);
int* indices = (int*)ibuffer->GetData();
memcpy(indices, &negIndices[0], negQuantity*sizeof(int));
memcpy(indices + negQuantity, &posIndices[0], posQuantity*sizeof(int));
}
//----------------------------------------------------------------------------
void ClipMesh::CreateScene ()
{
mScene = new0 Node();
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT3, 0);
// The plane is fixed at z = 0.
mPlane.SetNormal(AVector::UNIT_Z);
mPlane.SetConstant(0.0f);
mMeshPlane = StandardMesh(vformat).Rectangle(32, 32, 16.0f, 16.0f);
VisualEffectInstance* instance =
VertexColor3Effect::CreateUniqueInstance();
instance->GetEffect()->GetWireState(0,0)->Enabled = true;
mMeshPlane->SetEffectInstance(instance);
mScene->AttachChild(mMeshPlane);
VertexBufferAccessor vba(mMeshPlane);
Float3 green(0.0f, 1.0f, 0.0f);
int i;
for (i = 0; i < vba.GetNumVertices(); ++i)
{
vba.Color<Float3>(0, i) = green;
}
// Get the positions and indices for a torus.
mTorus = StandardMesh(vformat).Torus(64, 64, 4.0f, 1.0f);
instance = VertexColor3Effect::CreateUniqueInstance();
mTorusWireState = instance->GetEffect()->GetWireState(0, 0);
mTorus->SetEffectInstance(instance);
mScene->AttachChild(mTorus);
vba.ApplyTo(mTorus);
mTorusVerticesMS.resize(vba.GetNumVertices());
mTorusVerticesWS.resize(vba.GetNumVertices());
Float3 black(0.0f, 0.0f, 0.0f);
for (i = 0; i < vba.GetNumVertices(); ++i)
{
mTorusVerticesMS[i] = vba.Position<Float3>(i);
mTorusVerticesWS[i] = mTorusVerticesMS[i];
vba.Color<Float3>(0, i) = black;
}
IndexBuffer* ibuffer = mTorus->GetIndexBuffer();
int numIndices = ibuffer->GetNumElements();
int* indices = (int*)ibuffer->GetData();
mTorusIndices.resize(numIndices);
memcpy(&mTorusIndices[0], indices, numIndices*sizeof(int));
Update();
}
//----------------------------------------------------------------------------
TriMesh* ScreenTarget::CreateRectangle (VertexFormat* vformat, int rtWidth,
int rtHeight, float xmin, float xmax, float ymin, float ymax,
float zValue)
{
if (ValidFormat(vformat) && ValidSizes(rtWidth, rtHeight))
{
Float2 tc0, tc1, tc2, tc3;
if (VertexShader::GetProfile() == VertexShader::VP_ARBVP1)
{
tc0 = Float2(0.0f, 0.0f);
tc1 = Float2(1.0f, 0.0f);
tc2 = Float2(1.0f, 1.0f);
tc3 = Float2(0.0f, 1.0f);
}
else
{
float dx = 0.5f*(xmax - xmin)/(float)(rtWidth - 1);
float dy = 0.5f*(ymax - ymin)/(float)(rtHeight - 1);
xmin -= dx;
xmax -= dx;
ymin += dy;
ymax += dy;
tc0 = Float2(0.0f, 1.0f);
tc1 = Float2(1.0f, 1.0f);
tc2 = Float2(1.0f, 0.0f);
tc3 = Float2(0.0f, 0.0f);
}
int vstride = vformat->GetStride();
VertexBuffer* vbuffer = new0 VertexBuffer(4, vstride);
VertexBufferAccessor vba(vformat, vbuffer);
vba.Position<Float3>(0) = Float3(xmin, ymin, zValue);
vba.Position<Float3>(1) = Float3(xmax, ymin, zValue);
vba.Position<Float3>(2) = Float3(xmax, ymax, zValue);
vba.Position<Float3>(3) = Float3(xmin, ymax, zValue);
vba.TCoord<Float2>(0, 0) = tc0;
vba.TCoord<Float2>(0, 1) = tc1;
vba.TCoord<Float2>(0, 2) = tc2;
vba.TCoord<Float2>(0, 3) = tc3;
// 为square创建IndexBuffer
IndexBuffer* ibuffer = new0 IndexBuffer(6, sizeof(int));
int* indices = (int*)ibuffer->GetData();
indices[0] = 0; indices[1] = 1; indices[2] = 2;
indices[3] = 0; indices[4] = 2; indices[5] = 3;
return new0 TriMesh(vformat, vbuffer, ibuffer);
}
return 0;
}
//----------------------------------------------------------------------------
TriMesh* StandardMesh::Hexahedron ()
{
float fSqrtThird = Mathf::Sqrt(1.0f/3.0f);
int numVertices = 8;
int numTriangles = 12;
int numIndices = 3*numTriangles;
int stride = mVFormat->GetStride();
// Create a vertex buffer.
VertexBuffer* vbuffer = new0 VertexBuffer(numVertices, stride, mUsage);
VertexBufferAccessor vba(mVFormat, vbuffer);
// Generate geometry.
vba.Position<Float3>(0) = Float3(-fSqrtThird, -fSqrtThird, -fSqrtThird);
vba.Position<Float3>(1) = Float3( fSqrtThird, -fSqrtThird, -fSqrtThird);
vba.Position<Float3>(2) = Float3( fSqrtThird, fSqrtThird, -fSqrtThird);
vba.Position<Float3>(3) = Float3(-fSqrtThird, fSqrtThird, -fSqrtThird);
vba.Position<Float3>(4) = Float3(-fSqrtThird, -fSqrtThird, fSqrtThird);
vba.Position<Float3>(5) = Float3( fSqrtThird, -fSqrtThird, fSqrtThird);
vba.Position<Float3>(6) = Float3( fSqrtThird, fSqrtThird, fSqrtThird);
vba.Position<Float3>(7) = Float3(-fSqrtThird, fSqrtThird, fSqrtThird);
CreatePlatonicNormals(vba);
CreatePlatonicUVs(vba);
TransformData(vba);
// Generate indices.
IndexBuffer* ibuffer = new0 IndexBuffer(numIndices, 4, mUsage);
int* indices = (int*)ibuffer->GetData();
indices[ 0] = 0; indices[ 1] = 3; indices[ 2] = 2;
indices[ 3] = 0; indices[ 4] = 2; indices[ 5] = 1;
indices[ 6] = 0; indices[ 7] = 1; indices[ 8] = 5;
indices[ 9] = 0; indices[10] = 5; indices[11] = 4;
indices[12] = 0; indices[13] = 4; indices[14] = 7;
indices[15] = 0; indices[16] = 7; indices[17] = 3;
indices[18] = 6; indices[19] = 5; indices[20] = 1;
indices[21] = 6; indices[22] = 1; indices[23] = 2;
indices[24] = 6; indices[25] = 2; indices[26] = 3;
indices[27] = 6; indices[28] = 3; indices[29] = 7;
indices[30] = 6; indices[31] = 7; indices[32] = 4;
indices[33] = 6; indices[34] = 4; indices[35] = 5;
if (mInside)
{
ReverseTriangleOrder(numTriangles,indices);
}
return new0 TriMesh(mVFormat, vbuffer, ibuffer);
}
//----------------------------------------------------------------------------
Node* ExtremalQuery::CreateVisualConvexPolyhedron ()
{
const Vector3f* vertices = mConvexPolyhedron->GetVertices();
int numTriangles = mConvexPolyhedron->GetNumTriangles();
int numIndices = 3*numTriangles;
const int* polyIndices = mConvexPolyhedron->GetIndices();
// Visualize the convex polyhedron as a collection of face-colored
// triangles.
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT3, 0);
int vstride = vformat->GetStride();
VertexBuffer* vbuffer = new0 VertexBuffer(numIndices, vstride);
VertexBufferAccessor vba(vformat, vbuffer);
IndexBuffer* ibuffer = new0 IndexBuffer(numIndices, sizeof(int));
int* indices = (int*)ibuffer->GetData();
int i;
for (i = 0; i < numIndices; ++i)
{
vba.Position<Vector3f>(i) = vertices[polyIndices[i]];
indices[i] = i;
}
TriMesh* mesh = new0 TriMesh(vformat, vbuffer, ibuffer);
// Use randomly generated vertex colors.
for (i = 0; i < numTriangles; ++i)
{
Float3 color;
for (int j = 0; j < 3; ++j)
{
color[j] = Mathf::UnitRandom();
}
vba.Color<Float3>(0, 3*i ) = color;
vba.Color<Float3>(0, 3*i+1) = color;
vba.Color<Float3>(0, 3*i+2) = color;
}
mesh->SetEffectInstance(VertexColor3Effect::CreateUniqueInstance());
Node* root = new0 Node();
root->AttachChild(mesh);
return root;
}
//----------------------------------------------------------------------------
void IntersectTriangleCylinder::CreateScene ()
{
mScene = new0 Node();
mCullState = new0 CullState();
mCullState->Enabled = false;
mRenderer->SetOverrideCullState(mCullState);
mWireState = new0 WireState();
mRenderer->SetOverrideWireState(mWireState);
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT3, 0);
int vstride = vformat->GetStride();
VertexBuffer* vbuffer = new0 VertexBuffer(3, vstride);
VertexBufferAccessor vba(vformat, vbuffer);
vba.Position<Vector3f>(0) = (const Vector3f&)mTriangleMVertex0;
vba.Color<Float3>(0, 0) = Float3(0.0f, 0.0f, 1.0f);
vba.Position<Vector3f>(1) = (const Vector3f&)mTriangleMVertex1;
vba.Color<Float3>(0, 1) = Float3(0.0f, 0.0f, 1.0f);
vba.Position<Vector3f>(2) = (const Vector3f&)mTriangleMVertex2;
vba.Color<Float3>(0, 2) = Float3(0.0f, 0.0f, 1.0f);
IndexBuffer* ibuffer = new0 IndexBuffer(3, sizeof(int));
int* indices = (int*)ibuffer->GetData();
indices[0] = 0;
indices[1] = 1;
indices[2] = 2;
mTMesh = new0 TriMesh(vformat, vbuffer, ibuffer);
mTMesh->SetEffectInstance(
VertexColor3Effect::CreateUniqueInstance());
mTMesh->LocalTransform.SetTranslate(APoint(0.0f, 1.125f, 0.0f));
mCMesh = StandardMesh(vformat).Cylinder(8, 16, mCylinderRadius,
mCylinderHeight, false);
vba.ApplyTo(mCMesh);
for (int i = 0; i < vba.GetNumVertices(); ++i)
{
vba.Color<Float3>(0, i) = Float3(1.0f, 0.0f, 0.0f);
}
mCMesh->SetEffectInstance(
VertexColor3Effect::CreateUniqueInstance());
mScene->AttachChild(mTMesh);
mScene->AttachChild(mCMesh);
}
//----------------------------------------------------------------------------
TriMesh* RoughPlaneSolidBox::CreateRamp ()
{
float x = 8.0f;
float y = 8.0f;
float z = y*Mathf::Tan((float)mModule.Angle);
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT2, 0);
int vstride = vformat->GetStride();
VertexBuffer* vbuffer = new0 VertexBuffer(6, vstride);
VertexBufferAccessor vba(vformat, vbuffer);
vba.Position<Float3>(0) = Float3(-x, 0.0f, 0.0f);
vba.Position<Float3>(1) = Float3(+x, 0.0f, 0.0f);
vba.Position<Float3>(2) = Float3(-x, y, 0.0f);
vba.Position<Float3>(3) = Float3(+x, y, 0.0f);
vba.Position<Float3>(4) = Float3(-x, y, z);
vba.Position<Float3>(5) = Float3(+x, y, z);
vba.TCoord<Float2>(0, 0) = Float2(0.25f, 0.0f);
vba.TCoord<Float2>(0, 1) = Float2(0.75f, 0.0f);
vba.TCoord<Float2>(0, 2) = Float2(0.0f, 1.0f);
vba.TCoord<Float2>(0, 3) = Float2(1.0f, 1.0f);
vba.TCoord<Float2>(0, 4) = Float2(0.25f, 1.0f);
vba.TCoord<Float2>(0, 5) = Float2(0.75f, 1.0f);
IndexBuffer* ibuffer = new0 IndexBuffer(18, sizeof(int));
int* indices = (int*)ibuffer->GetData();
indices[ 0] = 0; indices[ 1] = 1; indices[ 2] = 4;
indices[ 3] = 1; indices[ 4] = 5; indices[ 5] = 4;
indices[ 6] = 0; indices[ 7] = 4; indices[ 8] = 2;
indices[ 9] = 1; indices[10] = 3; indices[11] = 5;
indices[12] = 3; indices[13] = 2; indices[14] = 4;
indices[15] = 3; indices[16] = 4; indices[17] = 5;
TriMesh* ramp = new0 TriMesh(vformat, vbuffer, ibuffer);
std::string path = Environment::GetPathR("Metal.wmtf");
Texture2D* texture = Texture2D::LoadWMTF(path);
ramp->SetEffectInstance(Texture2DEffect::CreateUniqueInstance(texture,
Shader::SF_LINEAR, Shader::SC_REPEAT, Shader::SC_REPEAT));
return ramp;
}
//----------------------------------------------------------------------------
TriMesh* PolyhedronDistance::CreateTetra (float size, bool isBlack)
{
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT3, 0);
int vstride = vformat->GetStride();
VertexBuffer* vbuffer = new0 VertexBuffer(4, vstride);
VertexBufferAccessor vba(vformat, vbuffer);
vba.Position<Vector3f>(0) = -(size/3.0f)*Vector3f(1.0f, 1.0f, 1.0f);
vba.Position<Vector3f>(1) = Vector3f(size, 0.0f, 0.0f);
vba.Position<Vector3f>(2) = Vector3f(0.0f, size, 0.0f);
vba.Position<Vector3f>(3) = Vector3f(0.0f, 0.0f, size);
if (isBlack)
{
// Black tetrahedra for the small ones used as points.
Float3 black(0.0f, 0.0f, 0.0f);
vba.Color<Float3>(0, 0) = black;
vba.Color<Float3>(0, 1) = black;
vba.Color<Float3>(0, 2) = black;
vba.Color<Float3>(0, 3) = black;
}
else
{
// Colorful colors for the tetrahedra under study.
vba.Color<Float3>(0, 0) = Float3(0.0f, 0.0f, 1.0f);
vba.Color<Float3>(0, 1) = Float3(0.0f, 1.0f, 0.0f);
vba.Color<Float3>(0, 2) = Float3(1.0f, 0.0f, 0.0f);
vba.Color<Float3>(0, 3) = Float3(1.0f, 1.0f, 1.0f);
}
IndexBuffer* ibuffer = new0 IndexBuffer(12, sizeof(int));
int* indices = (int*)ibuffer->GetData();
indices[ 0] = 0; indices[ 1] = 2; indices[ 2] = 1;
indices[ 3] = 0; indices[ 4] = 3; indices[ 5] = 2;
indices[ 6] = 0; indices[ 7] = 1; indices[ 8] = 3;
indices[ 9] = 1; indices[10] = 2; indices[11] = 3;
TriMesh* mesh = new0 TriMesh(vformat, vbuffer, ibuffer);
mesh->SetEffectInstance(VertexColor3Effect::CreateUniqueInstance());
return mesh;
}
//----------------------------------------------------------------------------
ClodMesh::ClodMesh (TriMesh* mesh, CollapseRecordArray* recordArray)
:
TriMesh(mesh->GetVertexFormat(), mesh->GetVertexBuffer(), 0),
mCurrentRecord(0),
mTargetRecord(0),
mRecordArray(recordArray)
{
assertion(recordArray != 0, "Record array is needed for construction.\n");
// 创建一份顶点索引的拷贝
IndexBuffer* ibuffer = mesh->GetIndexBuffer();
int numIndices = ibuffer->GetNumElements();
int elementSize = ibuffer->GetElementSize();
assertion(elementSize == 4, "Invalid indices.\n");
char* srcIndices = ibuffer->GetData();
mIBuffer = new0 IndexBuffer(numIndices, elementSize);
char* trgIndices = mIBuffer->GetData();
memcpy(trgIndices, srcIndices, numIndices*elementSize);
}
//----------------------------------------------------------------------------
TriMesh* StandardMesh::Tetrahedron ()
{
float fSqrt2Div3 = Mathf::Sqrt(2.0f)/3.0f;
float fSqrt6Div3 = Mathf::Sqrt(6.0f)/3.0f;
float fOneThird = 1.0f/3.0f;
int numVertices = 4;
int numTriangles = 4;
int numIndices = 3*numTriangles;
int stride = mVFormat->GetStride();
// Create a vertex buffer.
VertexBuffer* vbuffer = new0 VertexBuffer(numVertices, stride, mUsage);
VertexBufferAccessor vba(mVFormat, vbuffer);
// Generate geometry.
vba.Position<Float3>(0) = Float3(0.0f, 0.0f, 1.0f);
vba.Position<Float3>(1) = Float3(2.0f*fSqrt2Div3, 0.0f, -fOneThird);
vba.Position<Float3>(2) = Float3(-fSqrt2Div3, fSqrt6Div3, -fOneThird);
vba.Position<Float3>(3) = Float3(-fSqrt2Div3, -fSqrt6Div3, -fOneThird);
CreatePlatonicNormals(vba);
CreatePlatonicUVs(vba);
TransformData(vba);
// Generate indices.
IndexBuffer* ibuffer = new0 IndexBuffer(numIndices, 4, mUsage);
int* indices = (int*)ibuffer->GetData();
indices[ 0] = 0; indices[ 1] = 1; indices[ 2] = 2;
indices[ 3] = 0; indices[ 4] = 2; indices[ 5] = 3;
indices[ 6] = 0; indices[ 7] = 3; indices[ 8] = 1;
indices[ 9] = 1; indices[10] = 3; indices[11] = 2;
if (mInside)
{
ReverseTriangleOrder(numTriangles,indices);
}
return new0 TriMesh(mVFormat, vbuffer, ibuffer);
}
//----------------------------------------------------------------------------
TriMesh* Delaunay3D::CreateTetra (int index) const
{
const Vector3f* dvertices = mDelaunay->GetVertices();
const int* dindices = mDelaunay->GetIndices();
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT4, 0);
int vstride = vformat->GetStride();
VertexBuffer* vbuffer = new0 VertexBuffer(4, vstride);
VertexBufferAccessor vba(vformat, vbuffer);
vba.Position<Vector3f>(0) = dvertices[dindices[4*index ]];
vba.Position<Vector3f>(1) = dvertices[dindices[4*index + 1]];
vba.Position<Vector3f>(2) = dvertices[dindices[4*index + 2]];
vba.Position<Vector3f>(3) = dvertices[dindices[4*index + 3]];
Float4 lightGray(0.75f, 0.75f, 0.75f, 1.0f);
vba.Color<Float4>(0, 0) = lightGray;
vba.Color<Float4>(0, 1) = lightGray;
vba.Color<Float4>(0, 2) = lightGray;
vba.Color<Float4>(0, 3) = lightGray;
IndexBuffer* ibuffer = new0 IndexBuffer(12, sizeof(int));
int* indices = (int*)ibuffer->GetData();
indices[ 0] = 0; indices[ 1] = 1; indices[ 2] = 2;
indices[ 3] = 0; indices[ 4] = 3; indices[ 5] = 1;
indices[ 6] = 0; indices[ 7] = 2; indices[ 8] = 3;
indices[ 9] = 3; indices[10] = 2; indices[11] = 1;
TriMesh* tetra = new0 TriMesh(vformat, vbuffer, ibuffer);
VisualEffectInstance* instance =
VertexColor4Effect::CreateUniqueInstance();
instance->GetEffect()->GetAlphaState(0, 0)->BlendEnabled = true;
instance->GetEffect()->GetWireState(0, 0)->Enabled = true;
tetra->SetEffectInstance(instance);
return tetra;
}
//----------------------------------------------------------------------------
IndexBuffer* Visual::LoadIndexBuffer (FileIO& inFile)
{
int numElements;
inFile.Read(sizeof(int), &numElements);
if (numElements > 0)
{
int elementSize, usage, offset;
inFile.Read(sizeof(int), &elementSize);
inFile.Read(sizeof(int), &usage);
inFile.Read(sizeof(int), &offset);
IndexBuffer* ibuffer = new0 IndexBuffer(numElements, elementSize,
(Buffer::Usage)usage);
ibuffer->SetOffset(offset);
inFile.Read(elementSize, ibuffer->GetNumBytes()/elementSize,
ibuffer->GetData());
return ibuffer;
}
return 0;
}
//----------------------------------------------------------------------------
void ReflectionsAndShadows::CreatePlanes ()
{
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT2, 0);
int vstride = vformat->GetStride();
// Create the floor mesh.
VertexBuffer* vbuffer = new0 VertexBuffer(4, vstride);
VertexBufferAccessor floor(vformat, vbuffer);
float xValue = 128.0f;
float yValue = 256.0f;
float zValue = 0.0f;
floor.Position<Float3>(0) = Float3(-xValue, -yValue, zValue);
floor.Position<Float3>(1) = Float3(+xValue, -yValue, zValue);
floor.Position<Float3>(2) = Float3(+xValue, +yValue, zValue);
floor.Position<Float3>(3) = Float3(-xValue, +yValue, zValue);
floor.TCoord<Float2>(0, 0) = Float2(0.0f, 0.0f);
floor.TCoord<Float2>(0, 1) = Float2(1.0f, 0.0f);
floor.TCoord<Float2>(0, 2) = Float2(1.0f, 1.0f);
floor.TCoord<Float2>(0, 3) = Float2(0.0f, 1.0f);
IndexBuffer* ibuffer = new0 IndexBuffer(6, sizeof(int));
int* indices = (int*)ibuffer->GetData();
indices[0] = 0; indices[1] = 1; indices[2] = 2;
indices[3] = 0; indices[4] = 2; indices[5] = 3;
mPlane0 = new0 TriMesh(vformat, vbuffer, ibuffer);
Texture2DEffect* effect = new0 Texture2DEffect(Shader::SF_LINEAR_LINEAR,
Shader::SC_REPEAT, Shader::SC_REPEAT);
std::string path = Environment::GetPathR("Sand.wmtf");
Texture2D* texture = Texture2D::LoadWMTF(path);
mPlane0->SetEffectInstance(effect->CreateInstance(texture));
mScene->AttachChild(mPlane0);
// Create the wall mesh.
vbuffer = new0 VertexBuffer(4, vstride);
VertexBufferAccessor wall(vformat, vbuffer);
xValue = -128.0f;
yValue = 256.0f;
zValue = 128.0f;
wall.Position<Float3>(0) = Float3(xValue, -yValue, 0.0f);
wall.Position<Float3>(1) = Float3(xValue, +yValue, 0.0f);
wall.Position<Float3>(2) = Float3(xValue, +yValue, zValue);
wall.Position<Float3>(3) = Float3(xValue, -yValue, zValue);
wall.TCoord<Float2>(0, 0) = Float2(0.0f, 0.0f);
wall.TCoord<Float2>(0, 1) = Float2(1.0f, 0.0f);
wall.TCoord<Float2>(0, 2) = Float2(1.0f, 1.0f);
wall.TCoord<Float2>(0, 3) = Float2(0.0f, 1.0f);
mPlane1 = new0 TriMesh(vformat, vbuffer, ibuffer);
path = Environment::GetPathR("Stone.wmtf");
texture = Texture2D::LoadWMTF(path);
mPlane1->SetEffectInstance(effect->CreateInstance(texture));
mScene->AttachChild(mPlane1);
}
//----------------------------------------------------------------------------
void IntersectConvexPolyhedra::ComputeIntersection ()
{
// Transform the model-space vertices to world space.
VertexBufferAccessor vba(mMeshPoly0);
int i;
for (i = 0; i < vba.GetNumVertices(); ++i)
{
APoint modPos = vba.Position<Float3>(i);
APoint locPos = mMeshPoly0->LocalTransform*modPos;
mWorldPoly0.Point(i) = Vector3f(locPos[0], locPos[1], locPos[2]);
}
mWorldPoly0.UpdatePlanes();
vba.ApplyTo(mMeshPoly1);
for (i = 0; i < vba.GetNumVertices(); ++i)
{
APoint modPos = vba.Position<Float3>(i);
APoint locPos = mMeshPoly1->LocalTransform*modPos;
mWorldPoly1.Point(i) = Vector3f(locPos[0], locPos[1], locPos[2]);
}
mWorldPoly1.UpdatePlanes();
// Compute the intersection (if any) in world space.
bool hasIntersection = mWorldPoly0.FindIntersection(mWorldPoly1,
mIntersection);
if (hasIntersection)
{
// Build the corresponding mesh.
int numVertices = mIntersection.GetNumVertices();
int numTriangles = mIntersection.GetNumTriangles();
int numIndices = 3*numTriangles;
VertexFormat* vformat = mMeshPoly0->GetVertexFormat();
int vstride = vformat->GetStride();
VertexBuffer* vbuffer = new0 VertexBuffer(numVertices, vstride);
IndexBuffer* ibuffer = new0 IndexBuffer(numIndices, sizeof(int));
Float3 green(0.0f, 1.0f, 0.0f);
vba.ApplyTo(vformat, vbuffer);
for (i = 0; i < numVertices; ++i)
{
vba.Position<Vector3f>(i) = mIntersection.Point(i);
vba.Color<Float3>(0, i) = green;
}
int* indices = (int*)ibuffer->GetData();
for (i = 0; i < numTriangles; ++i)
{
const MTTriangle& triangle = mIntersection.GetTriangle(i);
for (int j = 0; j < 3; ++j)
{
indices[3*i + j] =
mIntersection.GetVLabel(triangle.GetVertex(j));
}
}
mMeshIntersection = new0 TriMesh(vformat, vbuffer, ibuffer);
mMeshIntersection->SetEffectInstance(
VertexColor3Effect::CreateUniqueInstance());
mScene->SetChild(0, mMeshIntersection);
mMeshIntersection->Culling = Spatial::CULL_DYNAMIC;
}
else
{
mMeshIntersection->Culling = Spatial::CULL_ALWAYS;
}
}
//----------------------------------------------------------------------------
void IntersectConvexPolyhedra::CreateScene ()
{
mScene = new0 Node();
mMotionObject = mScene;
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT3, 0);
int vstride = vformat->GetStride();
// Attach a dummy intersection mesh. If the intersection is nonempty,
// the Culling flag will be modified to CULL_DYNAMIC. The intersection
// is drawn as a solid.
mMeshIntersection = StandardMesh(vformat).Tetrahedron();
VertexBufferAccessor vba(mMeshIntersection);
Float3 green(0.0f, 1.0f, 0.0f);
int i, j;
for (i = 0; i < vba.GetNumVertices(); ++i)
{
vba.Color<Float3>(0, i) = green;
}
mMeshIntersection->SetEffectInstance(
VertexColor3Effect::CreateUniqueInstance());
mMeshIntersection->Culling = Spatial::CULL_ALWAYS;
mScene->AttachChild(mMeshIntersection);
// The first polyhedron is an ellipsoid.
ConvexPolyhedronf::CreateEggShape(Vector3f::ZERO, 1.0f, 1.0f, 2.0f, 2.0f,
4.0f, 4.0f, 3, mWorldPoly0);
// Build the corresponding mesh.
int numVertices = mWorldPoly0.GetNumVertices();
int numTriangles = mWorldPoly0.GetNumTriangles();
int numIndices = 3*numTriangles;
VertexBuffer* vbuffer = new0 VertexBuffer(numVertices, vstride);
IndexBuffer* ibuffer = new0 IndexBuffer(numIndices, sizeof(int));
Float3 red(1.0f, 0.0f, 0.0f);
vba.ApplyTo(vformat, vbuffer);
for (i = 0; i < numVertices; ++i)
{
vba.Position<Vector3f>(i) = mWorldPoly0.Point(i);
vba.Color<Float3>(0,i) = red;
}
int* indices = (int*)ibuffer->GetData();
for (i = 0; i < numTriangles; ++i)
{
const MTTriangle& triangle = mWorldPoly0.GetTriangle(i);
for (j = 0; j < 3; ++j)
{
indices[3*i + j] = mWorldPoly0.GetVLabel(triangle.GetVertex(j));
}
}
mMeshPoly0 = new0 TriMesh(vformat, vbuffer, ibuffer);
VisualEffectInstance* instance =
VertexColor3Effect::CreateUniqueInstance();
instance->GetEffect()->GetWireState(0, 0)->Enabled = true;
mMeshPoly0->SetEffectInstance(instance);
mMeshPoly0->LocalTransform.SetTranslate(APoint(0.0f, 2.0f, 0.0f));
mScene->AttachChild(mMeshPoly0);
// The second polyhedron is egg shaped.
ConvexPolyhedronf::CreateEggShape(Vector3f::ZERO, 2.0f, 2.0f, 4.0f, 4.0f,
5.0f, 3.0f, 4, mWorldPoly1);
// Build the corresponding mesh.
numVertices = mWorldPoly1.GetNumVertices();
numTriangles = mWorldPoly1.GetNumTriangles();
numIndices = 3*numTriangles;
vbuffer = new0 VertexBuffer(numVertices, vstride);
ibuffer = new0 IndexBuffer(numIndices, sizeof(int));
Float3 blue(0.0f, 0.0f, 1.0f);
vba.ApplyTo(vformat, vbuffer);
for (i = 0; i < numVertices; ++i)
{
vba.Position<Vector3f>(i) = mWorldPoly1.Point(i);
vba.Color<Float3>(0, i) = blue;
}
indices = (int*)ibuffer->GetData();
for (i = 0; i < numTriangles; ++i)
{
const MTTriangle& triangle = mWorldPoly1.GetTriangle(i);
for (j = 0; j < 3; ++j)
{
indices[3*i + j] = mWorldPoly1.GetVLabel(triangle.GetVertex(j));
}
}
mMeshPoly1 = new0 TriMesh(vformat, vbuffer, ibuffer);
instance = VertexColor3Effect::CreateUniqueInstance();
instance->GetEffect()->GetWireState(0, 0)->Enabled = true;
mMeshPoly1->SetEffectInstance(instance);
mMeshPoly1->LocalTransform.SetTranslate(APoint(0.0f, -2.0f, 0.0f));
mScene->AttachChild(mMeshPoly1);
ComputeIntersection();
}
//----------------------------------------------------------------------------
TriMesh* StandardMesh::Cylinder (int axisSamples, int radialSamples,
float radius, float height, bool open)
{
TriMesh* mesh;
int unit;
Float2 tcoord;
if (open)
{
int numVertices = axisSamples*(radialSamples+1);
int numTriangles = 2*(axisSamples-1)*radialSamples;
int numIndices = 3*numTriangles;
int stride = mVFormat->GetStride();
// Create a vertex buffer.
VertexBuffer* vbuffer = new0 VertexBuffer(numVertices, stride,
mUsage);
VertexBufferAccessor vba(mVFormat, vbuffer);
// Generate geometry.
float invRS = 1.0f/(float)radialSamples;
float invASm1 = 1.0f/(float)(axisSamples-1);
float halfHeight = 0.5f*height;
int r, a, aStart, i;
// Generate points on the unit circle to be used in computing the
// mesh points on a cylinder slice.
float* cs = new1<float>(radialSamples + 1);
float* sn = new1<float>(radialSamples + 1);
for (r = 0; r < radialSamples; ++r)
{
float angle = Mathf::TWO_PI*invRS*r;
cs[r] = Mathf::Cos(angle);
sn[r] = Mathf::Sin(angle);
}
cs[radialSamples] = cs[0];
sn[radialSamples] = sn[0];
// Generate the cylinder itself.
for (a = 0, i = 0; a < axisSamples; ++a)
{
float axisFraction = a*invASm1; // in [0,1]
float z = -halfHeight + height*axisFraction;
// Compute center of slice.
APoint sliceCenter(0.0f, 0.0f, z);
// Compute slice vertices with duplication at endpoint.
int save = i;
for (r = 0; r < radialSamples; ++r)
{
float radialFraction = r*invRS; // in [0,1)
AVector normal(cs[r], sn[r], 0.0f);
vba.Position<Float3>(i) = sliceCenter + radius*normal;
if (mHasNormals)
{
if (mInside)
{
vba.Normal<Float3>(i) = -normal;
}
else
{
vba.Normal<Float3>(i) = normal;
}
}
tcoord = Float2(radialFraction, axisFraction);
for (unit = 0; unit < MAX_UNITS; ++unit)
{
if (mHasTCoords[unit])
{
vba.TCoord<Float2>(unit, i) = tcoord;
}
}
++i;
}
vba.Position<Float3>(i) = vba.Position<Float3>(save);
if (mHasNormals)
{
vba.Normal<Float3>(i) = vba.Normal<Float3>(save);
}
tcoord = Float2(1.0f, axisFraction);
for (unit = 0; unit < MAX_UNITS; ++unit)
{
if (mHasTCoords[unit])
{
vba.TCoord<Float2>(0, i) = tcoord;
}
}
++i;
}
TransformData(vba);
// Generate indices.
IndexBuffer* ibuffer = new0 IndexBuffer(numIndices, 4, mUsage);
int* indices = (int*)ibuffer->GetData();
for (a = 0, aStart = 0; a < axisSamples-1; ++a)
{
int i0 = aStart;
int i1 = i0 + 1;
aStart += radialSamples + 1;
int i2 = aStart;
int i3 = i2 + 1;
for (i = 0; i < radialSamples; ++i, indices += 6)
{
if (mInside)
{
indices[0] = i0++;
indices[1] = i2;
indices[2] = i1;
indices[3] = i1++;
indices[4] = i2++;
indices[5] = i3++;
}
else // outside view
{
indices[0] = i0++;
indices[1] = i1;
indices[2] = i2;
indices[3] = i1++;
indices[4] = i3++;
indices[5] = i2++;
}
}
}
delete1(cs);
delete1(sn);
mesh = new0 TriMesh(mVFormat, vbuffer, ibuffer);
}
else
{
mesh = Sphere(axisSamples, radialSamples, radius);
VertexBuffer* vbuffer = mesh->GetVertexBuffer();
int numVertices = vbuffer->GetNumElements();
VertexBufferAccessor vba(mVFormat, vbuffer);
// Flatten sphere at poles.
float hDiv2 = 0.5f*height;
vba.Position<Float3>(numVertices-2)[2] = -hDiv2; // south pole
vba.Position<Float3>(numVertices-1)[2] = +hDiv2; // north pole
// Remap z-values to [-h/2,h/2].
float zFactor = 2.0f/(axisSamples-1);
float tmp0 = radius*(-1.0f + zFactor);
float tmp1 = 1.0f/(radius*(+1.0f - zFactor));
for (int i = 0; i < numVertices-2; ++i)
{
Float3& pos = vba.Position<Float3>(i);
pos[2] = hDiv2*(-1.0f + tmp1*(pos[2] - tmp0));
float adjust = radius*Mathf::InvSqrt(pos[0]*pos[0] +
pos[1]*pos[1]);
pos[0] *= adjust;
pos[1] *= adjust;
}
TransformData(vba);
if (mHasNormals)
{
mesh->UpdateModelSpace(Visual::GU_NORMALS);
}
}
// The duplication of vertices at the seam causes the automatically
// generated bounding volume to be slightly off center. Reset the bound
// to use the true information.
float maxDist = Mathf::Sqrt(radius*radius + height*height);
mesh->GetModelBound().SetCenter(APoint::ORIGIN);
mesh->GetModelBound().SetRadius(maxDist);
return mesh;
}
//----------------------------------------------------------------------------
TriMesh* StandardMesh::Sphere (int zSamples, int radialSamples,
float radius)
{
int zsm1 = zSamples-1, zsm2 = zSamples-2, zsm3 = zSamples-3;
int rsp1 = radialSamples+1;
int numVertices = zsm2*rsp1 + 2;
int numTriangles = 2*zsm2*radialSamples;
int numIndices = 3*numTriangles;
int stride = mVFormat->GetStride();
// Create a vertex buffer.
VertexBuffer* vbuffer = new0 VertexBuffer(numVertices, stride, mUsage);
VertexBufferAccessor vba(mVFormat, vbuffer);
// Generate geometry.
float invRS = 1.0f/(float)radialSamples;
float zFactor = 2.0f/(float)zsm1;
int r, z, zStart, i, unit;
Float2 tcoord;
// Generate points on the unit circle to be used in computing the mesh
// points on a cylinder slice.
float* sn = new1<float>(rsp1);
float* cs = new1<float>(rsp1);
for (r = 0; r < radialSamples; ++r)
{
float angle = Mathf::TWO_PI*invRS*r;
cs[r] = Mathf::Cos(angle);
sn[r] = Mathf::Sin(angle);
}
sn[radialSamples] = sn[0];
cs[radialSamples] = cs[0];
// Generate the cylinder itself.
for (z = 1, i = 0; z < zsm1; ++z)
{
float zFraction = -1.0f + zFactor*z; // in (-1,1)
float zValue = radius*zFraction;
// Compute center of slice.
APoint sliceCenter(0.0f, 0.0f, zValue);
// Compute radius of slice.
float sliceRadius = Mathf::Sqrt(Mathf::FAbs(
radius*radius - zValue*zValue));
// Compute slice vertices with duplication at endpoint.
AVector normal;
int save = i;
for (r = 0; r < radialSamples; ++r)
{
float radialFraction = r*invRS; // in [0,1)
AVector radial(cs[r], sn[r], 0.0f);
vba.Position<Float3>(i) = sliceCenter + sliceRadius*radial;
if (mHasNormals)
{
normal = vba.Position<Float3>(i);
normal.Normalize();
if (mInside)
{
vba.Normal<Float3>(i) = -normal;
}
else
{
vba.Normal<Float3>(i) = normal;
}
}
tcoord[0] = radialFraction;
tcoord[1] = 0.5f*(zFraction + 1.0f);
for (unit = 0; unit < MAX_UNITS; ++unit)
{
if (mHasTCoords[unit])
{
vba.TCoord<Float2>(unit, i) = tcoord;
}
}
++i;
}
vba.Position<Float3>(i) = vba.Position<Float3>(save);
if (mHasNormals)
{
vba.Normal<Float3>(i) = vba.Normal<Float3>(save);
}
tcoord[0] = 1.0f;
tcoord[1] = 0.5f*(zFraction + 1.0f);
for (unit = 0; unit < MAX_UNITS; ++unit)
{
if (mHasTCoords[unit])
{
vba.TCoord<Float2>(unit, i) = tcoord;
}
}
++i;
}
// south pole
vba.Position<Float3>(i) = Float3(0.0f, 0.0f, -radius);
if (mHasNormals)
{
if (mInside)
{
vba.Normal<Float3>(i) = Float3(0.0f, 0.0f, 1.0f);
}
else
{
vba.Normal<Float3>(i) = Float3(0.0f, 0.0f, -1.0f);
}
}
tcoord = Float2(0.5f, 0.5f);
for (unit = 0; unit < MAX_UNITS; ++unit)
{
if (mHasTCoords[unit])
{
vba.TCoord<Float2>(unit, i) = tcoord;
}
}
++i;
// north pole
vba.Position<Float3>(i) = Float3(0.0f, 0.0f, radius);
if (mHasNormals)
{
if (mInside)
{
vba.Normal<Float3>(i) = Float3(0.0f, 0.0f, -1.0f);
}
else
{
vba.Normal<Float3>(i) = Float3(0.0f, 0.0f, 1.0f);
}
}
tcoord = Float2(0.5f, 1.0f);
for (unit = 0; unit < MAX_UNITS; ++unit)
{
if (mHasTCoords[unit])
{
vba.TCoord<Float2>(unit, i) = tcoord;
}
}
++i;
TransformData(vba);
// Generate indices.
IndexBuffer* ibuffer = new0 IndexBuffer(numIndices, 4, mUsage);
int* indices = (int*)ibuffer->GetData();
for (z = 0, zStart = 0; z < zsm3; ++z)
{
int i0 = zStart;
int i1 = i0 + 1;
zStart += rsp1;
int i2 = zStart;
int i3 = i2 + 1;
for (i = 0; i < radialSamples; ++i, indices += 6)
{
if (mInside)
{
indices[0] = i0++;
indices[1] = i2;
indices[2] = i1;
indices[3] = i1++;
indices[4] = i2++;
indices[5] = i3++;
}
else // inside view
{
indices[0] = i0++;
indices[1] = i1;
indices[2] = i2;
indices[3] = i1++;
indices[4] = i3++;
indices[5] = i2++;
}
}
}
// south pole triangles
int numVerticesM2 = numVertices - 2;
for (i = 0; i < radialSamples; ++i, indices += 3)
{
if (mInside)
{
indices[0] = i;
indices[1] = i + 1;
indices[2] = numVerticesM2;
}
else
{
indices[0] = i;
indices[1] = numVerticesM2;
indices[2] = i + 1;
}
}
// north pole triangles
int numVerticesM1 = numVertices-1, offset = zsm3*rsp1;
for (i = 0; i < radialSamples; ++i, indices += 3)
{
if (mInside)
{
indices[0] = i + offset;
indices[1] = numVerticesM1;
indices[2] = i + 1 + offset;
}
else
{
indices[0] = i + offset;
indices[1] = i + 1 + offset;
indices[2] = numVerticesM1;
}
}
delete1(cs);
delete1(sn);
// The duplication of vertices at the seam cause the automatically
// generated bounding volume to be slightly off center. Reset the bound
// to use the true information.
TriMesh* mesh = new0 TriMesh(mVFormat, vbuffer, ibuffer);
mesh->GetModelBound().SetCenter(APoint::ORIGIN);
mesh->GetModelBound().SetRadius(radius);
return mesh;
}
//----------------------------------------------------------------------------
void Skinning::CreateScene ()
{
mScene = new0 Node();
mTrnNode = new0 Node();
mScene->AttachChild(mTrnNode);
// The skinned object is a cylinder.
const int radialSamples = 10;
const int axisSamples = 7;
const float radius = 10.0f;
const float height = 80.0f;
const float invRS = 1.0f/(float)radialSamples;
const float invASm1 = 1.0f/(float)(axisSamples - 1);
const float halfHeight = 0.5f*height;
const APoint center(0.0f, 0.0f, 100.0f);
const AVector u(0.0f,0.0f,-1.0f);
const AVector v(0.0f,1.0f,0.0f);
const AVector axis(1.0f,0.0f,0.0f);
// Generate geometry.
VertexFormat* vformat = VertexFormat::Create(3,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT4, 0);
int vstride = vformat->GetStride();
const int numVertices = axisSamples*(radialSamples + 1);
VertexBuffer* vbuffer = new0 VertexBuffer(numVertices, vstride);
VertexBufferAccessor vba(vformat, vbuffer);
// Generate points on the unit circle to be used in computing the mesh
// points on a cylinder slice.
int r, a, aStart, i;
float* sn = new1<float>(radialSamples + 1);
float* cs = new1<float>(radialSamples + 1);
for (r = 0; r < radialSamples; ++r)
{
float angle = Mathf::TWO_PI*invRS*r;
cs[r] = Mathf::Cos(angle);
sn[r] = Mathf::Sin(angle);
}
sn[radialSamples] = sn[0];
cs[radialSamples] = cs[0];
// Generate the cylinder itself.
for (a = 0, i = 0; a < axisSamples; ++a, ++i)
{
float axisFraction = a*invASm1; // in [0,1]
float z = -halfHeight + height*axisFraction;
// Compute center of slice.
APoint sliceCenter = center + z*axis;
// Compute slice vertices with duplication at end point.
Float3 color(axisFraction, 1.0f - axisFraction, 0.3f);
Float4 tcoord;
int save = i;
for (r = 0; r < radialSamples; ++r, ++i)
{
AVector normal = cs[r]*u + sn[r]*v;
vba.Position<Float3>(i) = sliceCenter + radius*normal;
vba.Color<Float3>(0,i) = color;
vba.TCoord<Float4>(0, i) = ComputeWeights(a);
}
vba.Position<Float3>(i) = vba.Position<Float3>(save);
vba.Color<Float3>(0, i) = color;
vba.TCoord<Float4>(0, i) = ComputeWeights(a);
}
// Generate connectivity.
int numTriangles = 2*(axisSamples - 1)*radialSamples;
int numIndices = 3*numTriangles;
IndexBuffer* ibuffer = new0 IndexBuffer(numIndices, sizeof(int));
int* indices = (int*)ibuffer->GetData();
for (a = 0, aStart = 0; a < axisSamples - 1; ++a)
{
int i0 = aStart;
int i1 = i0 + 1;
aStart += radialSamples + 1;
int i2 = aStart;
int i3 = i2 + 1;
for (i = 0; i < radialSamples; ++i, indices += 6)
{
indices[0] = i0++;
indices[1] = i1;
indices[2] = i2;
indices[3] = i1++;
indices[4] = i3++;
indices[5] = i2++;
}
}
delete1(cs);
delete1(sn);
TriMesh* mesh = new0 TriMesh(vformat, vbuffer, ibuffer);
mTrnNode->AttachChild(mesh);
std::string effectFile = Environment::GetPathR("Skinning.wmfx");
SkinningEffect* effect = new0 SkinningEffect(effectFile);
ShaderFloat* skinningMatrix[4] =
{
new0 ShaderFloat(4),
new0 ShaderFloat(4),
new0 ShaderFloat(4),
new0 ShaderFloat(4)
};
for (i = 0; i < 4; ++i)
{
mSkinningMatrix[i] = skinningMatrix[i]->GetData();
}
mesh->SetEffectInstance(effect->CreateInstance(skinningMatrix));
}
//----------------------------------------------------------------------------
TriMesh* StandardMesh::Torus (int circleSamples, int radialSamples,
float outerRadius, float innerRadius)
{
int numVertices = (circleSamples+1)*(radialSamples+1);
int numTriangles = 2*circleSamples*radialSamples;
int numIndices = 3*numTriangles;
int stride = mVFormat->GetStride();
// Create a vertex buffer.
VertexBuffer* vbuffer = new0 VertexBuffer(numVertices, stride, mUsage);
VertexBufferAccessor vba(mVFormat, vbuffer);
// Generate geometry.
float invCS = 1.0f/(float)circleSamples;
float invRS = 1.0f/(float)radialSamples;
int c, r, i, unit;
Float2 tcoord;
// Generate the cylinder itself.
for (c = 0, i = 0; c < circleSamples; ++c)
{
// Compute center point on torus circle at specified angle.
float circleFraction = c*invCS; // in [0,1)
float theta = Mathf::TWO_PI*circleFraction;
float cosTheta = Mathf::Cos(theta);
float sinTheta = Mathf::Sin(theta);
AVector radial(cosTheta, sinTheta, 0.0f);
AVector torusMiddle = outerRadius*radial;
// Compute slice vertices with duplication at endpoint.
int save = i;
for (r = 0; r < radialSamples; ++r)
{
float radialFraction = r*invRS; // in [0,1)
float phi = Mathf::TWO_PI*radialFraction;
float cosPhi = Mathf::Cos(phi);
float sinPhi = Mathf::Sin(phi);
AVector normal = cosPhi*radial + sinPhi*AVector::UNIT_Z;
vba.Position<Float3>(i) = torusMiddle + innerRadius*normal;
if (mHasNormals)
{
if (mInside)
{
vba.Normal<Float3>(i) = -normal;
}
else
{
vba.Normal<Float3>(i) = normal;
}
}
tcoord = Float2(radialFraction, circleFraction);
for (unit = 0; unit < MAX_UNITS; ++unit)
{
if (mHasTCoords[unit])
{
vba.TCoord<Float2>(unit, i) = tcoord;
}
}
++i;
}
vba.Position<Float3>(i) = vba.Position<Float3>(save);
if (mHasNormals)
{
vba.Normal<Float3>(i) = vba.Normal<Float3>(save);
}
tcoord = Float2(1.0f, circleFraction);
for (unit = 0; unit < MAX_UNITS; ++unit)
{
if (mHasTCoords[unit])
{
vba.TCoord<Float2>(unit, i) = tcoord;
}
}
++i;
}
// Duplicate the cylinder ends to form a torus.
for (r = 0; r <= radialSamples; ++r, ++i)
{
vba.Position<Float3>(i) = vba.Position<Float3>(r);
if (mHasNormals)
{
vba.Normal<Float3>(i) = vba.Normal<Float3>(r);
}
for (unit = 0; unit < MAX_UNITS; ++unit)
{
if (mHasTCoords[unit])
{
vba.TCoord<Float2>(unit, i) =
Float2(vba.TCoord<Float2>(unit, r)[0], 1.0f);
}
}
}
TransformData(vba);
// Generate indices.
IndexBuffer* ibuffer = new0 IndexBuffer(numIndices, 4, mUsage);
int* indices = (int*)ibuffer->GetData();
int cStart = 0;
for (c = 0; c < circleSamples; ++c)
{
int i0 = cStart;
int i1 = i0 + 1;
cStart += radialSamples + 1;
int i2 = cStart;
int i3 = i2 + 1;
for (i = 0; i < radialSamples; ++i, indices += 6)
{
if (mInside)
{
indices[0] = i0++;
indices[1] = i1;
indices[2] = i2;
indices[3] = i1++;
indices[4] = i3++;
indices[5] = i2++;
}
else // inside view
{
indices[0] = i0++;
indices[1] = i2;
indices[2] = i1;
indices[3] = i1++;
indices[4] = i2++;
indices[5] = i3++;
}
}
}
// The duplication of vertices at the seam cause the automatically
// generated bounding volume to be slightly off center. Reset the bound
// to use the true information.
TriMesh* mesh = new0 TriMesh(mVFormat, vbuffer, ibuffer);
mesh->GetModelBound().SetCenter(APoint::ORIGIN);
mesh->GetModelBound().SetRadius(outerRadius);
return mesh;
}
//----------------------------------------------------------------------------
TriMesh* StandardMesh::Rectangle (int xSamples, int ySamples, float xExtent,
float yExtent)
{
int numVertices = xSamples*ySamples;
int numTriangles = 2*(xSamples-1)*(ySamples-1);
int numIndices = 3*numTriangles;
int stride = mVFormat->GetStride();
// Create a vertex buffer.
VertexBuffer* vbuffer = new0 VertexBuffer(numVertices, stride, mUsage);
VertexBufferAccessor vba(mVFormat, vbuffer);
// Generate geometry.
float inv0 = 1.0f/(xSamples - 1.0f);
float inv1 = 1.0f/(ySamples - 1.0f);
float u, v, x, y;
int i, i0, i1;
for (i1 = 0, i = 0; i1 < ySamples; ++i1)
{
v = i1*inv1;
y = (2.0f*v - 1.0f)*yExtent;
for (i0 = 0; i0 < xSamples; ++i0, ++i)
{
u = i0*inv0;
x = (2.0f*u - 1.0f)*xExtent;
vba.Position<Float3>(i) = Float3(x, y, 0.0f);
if (mHasNormals)
{
vba.Normal<Float3>(i) = Float3(0.0f, 0.0f, 1.0f);
}
Float2 tcoord(u, v);
for (int unit = 0; unit < MAX_UNITS; ++unit)
{
if (mHasTCoords[unit])
{
vba.TCoord<Float2>(unit, i) = tcoord;
}
}
}
}
TransformData(vba);
// Generate indices.
IndexBuffer* ibuffer = new0 IndexBuffer(numIndices, 4, mUsage);
int* indices = (int*)ibuffer->GetData();
for (i1 = 0; i1 < ySamples - 1; ++i1)
{
for (i0 = 0; i0 < xSamples - 1; ++i0)
{
int v0 = i0 + xSamples * i1;
int v1 = v0 + 1;
int v2 = v1 + xSamples;
int v3 = v0 + xSamples;
*indices++ = v0;
*indices++ = v1;
*indices++ = v2;
*indices++ = v0;
*indices++ = v2;
*indices++ = v3;
}
}
return new0 TriMesh(mVFormat, vbuffer, ibuffer);
}
//----------------------------------------------------------------------------
void VolumeTextures::CreateScene ()
{
mScene = new0 Node();
mAlphaState = new0 AlphaState();
mAlphaState->BlendEnabled = true;
mRenderer->SetOverrideAlphaState(mAlphaState);
mCullState = new0 CullState();
mCullState->Enabled = false;
mRenderer->SetOverrideCullState(mCullState);
// Create the grid of square meshes.
const int numSlices = 64;
const int numSamples = 32;
// The vertex format that is shared by all square meshes.
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT3, 0);
int vstride = vformat->GetStride();
// The index buffer that is shared by all square meshes.
int numIndices = 6*(numSamples-1)*(numSamples-1);
IndexBuffer* ibuffer = new0 IndexBuffer(numIndices, sizeof(int));
int* indices = (int*)ibuffer->GetData();
for (int i1 = 0; i1 < numSamples - 1; ++i1)
{
for (int i0 = 0; i0 < numSamples - 1; ++i0)
{
int v0 = i0 + numSamples * i1;
int v1 = v0 + 1;
int v2 = v1 + numSamples;
int v3 = v0 + numSamples;
*indices++ = v0;
*indices++ = v1;
*indices++ = v2;
*indices++ = v0;
*indices++ = v2;
*indices++ = v3;
}
}
// Create the volume texture. Three Gaussian distributions are used for
// the RGB color channels. The alpha channel is constant.
const int bound = 64;
Texture3D* texture = new0 Texture3D(Texture::TF_A8R8G8B8, bound, bound,
bound, 1);
unsigned char* data = (unsigned char*)texture->GetData(0);
const float mult = 1.0f/(bound - 1.0f);
const float rParam = 0.01f;
const float gParam = 0.01f;
const float bParam = 0.01f;
const float extreme = 8.0f;
APoint rCenter( 0.5f*extreme, 0.0f, 0.0f);
APoint gCenter(-0.5f*extreme, -0.5f*extreme, 0.0f);
APoint bCenter(-0.5f*extreme, +0.5f*extreme, 0.0f);
unsigned char commonAlpha = 12;
APoint point;
for (int z = 0; z < bound; ++z)
{
point[2] = -extreme + 2.0f*extreme*mult*z;
for (int y = 0; y < bound; ++y)
{
point[1] = -extreme + 2.0f*extreme*mult*y;
for (int x = 0; x < bound; ++x)
{
point[0] = -extreme + 2.0f*extreme*mult*x;
AVector diff = point - rCenter;
float sqrLength = diff.SquaredLength();
float rGauss = 1.0f - rParam*sqrLength;
if (rGauss < 0.0f)
{
rGauss = 0.0f;
}
diff = point - gCenter;
sqrLength = diff.SquaredLength();
float gGauss = 1.0f - gParam*sqrLength;
if (gGauss < 0.0f)
{
gGauss = 0.0f;
}
diff = point - bCenter;
sqrLength = diff.SquaredLength();
float bGauss = 1.0f - bParam*sqrLength;
if (bGauss < 0.0f)
{
bGauss = 0.0f;
}
*data++ = (unsigned char)(255.0f*bGauss);
*data++ = (unsigned char)(255.0f*gGauss);
*data++ = (unsigned char)(255.0f*rGauss);
*data++ = commonAlpha;
}
}
}
// The volume texture effect that is shared by all square meshes.
std::string effectFile = Environment::GetPathR("VolumeTextures.wmfx");
VolumeTextureEffect* effect = new0 VolumeTextureEffect(effectFile);
VisualEffectInstance* instance = effect->CreateInstance(texture);
// The grid of squares.
const int numVertices = numSamples*numSamples;
float inv = 1.0f/(numSamples - 1.0f);
VertexBufferAccessor vba;
for (int slice = 0; slice < numSlices; ++slice)
{
VertexBuffer* vbuffer = new0 VertexBuffer(numVertices, vstride);
vba.ApplyTo(vformat, vbuffer);
float w = slice/(numSlices - 1.0f);
float z = 2.0f*w - 1.0f;
for (int i1 = 0, i = 0; i1 < numSamples; ++i1)
{
float v = i1*inv;
float y = 2.0f*v - 1.0f;
for (int i0 = 0; i0 < numSamples; ++i0, ++i)
{
float u = i0*inv;
float x = 2.0f*u - 1.0f;
vba.Position<Float3>(i) = Float3(x, y, z);
vba.TCoord<Float3>(0, i) = Float3(u, v, w);
}
}
TriMesh* mesh = new0 TriMesh(vformat, vbuffer, ibuffer);
mesh->SetEffectInstance(instance);
mScene->AttachChild(mesh);
}
}
//----------------------------------------------------------------------------
void CubeMaps::CreateScene ()
{
// Create the root of the scene.
mScene = new0 Node();
mWireState = new0 WireState();
mRenderer->SetOverrideWireState(mWireState);
// Create the walls of the cube room. Each of the six texture images is
// RGBA 64-by-64.
Node* room = new0 Node();
mScene->AttachChild(room);
// Index buffer shared by the room walls.
IndexBuffer* ibuffer = new0 IndexBuffer(6, sizeof(int));
int* indices = (int*)ibuffer->GetData();
indices[0] = 0; indices[1] = 1; indices[2] = 3;
indices[3] = 0; indices[4] = 3; indices[5] = 2;
// The vertex format shared by the room walls.
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT2, 0);
int vstride = vformat->GetStride();
VertexBufferAccessor vba;
// The texture effect shared by the room walls.
Texture2DEffect* effect = new0 Texture2DEffect(Shader::SF_LINEAR);
VertexBuffer* vbuffer;
TriMesh* wall;
std::string textureName;
// +x wall
vbuffer = new0 VertexBuffer(4, vstride);
vba.ApplyTo(vformat, vbuffer);
vba.Position<Float3>(0) = Float3(+1.0f, -1.0f, -1.0f);
vba.Position<Float3>(1) = Float3(+1.0f, -1.0f, +1.0f);
vba.Position<Float3>(2) = Float3(+1.0f, +1.0f, -1.0f);
vba.Position<Float3>(3) = Float3(+1.0f, +1.0f, +1.0f);
vba.TCoord<Float2>(0, 0) = Float2(0.0f, 0.0f);
vba.TCoord<Float2>(0, 1) = Float2(1.0f, 0.0f);
vba.TCoord<Float2>(0, 2) = Float2(0.0f, 1.0f);
vba.TCoord<Float2>(0, 3) = Float2(1.0f, 1.0f);
wall = new0 TriMesh(vformat, vbuffer, ibuffer);
room->AttachChild(wall);
textureName = Environment::GetPathR("XpFace.wmtf");
Texture2D* xpTexture = Texture2D::LoadWMTF(textureName);
wall->SetEffectInstance(effect->CreateInstance(xpTexture));
// -x wall
vbuffer = new0 VertexBuffer(4, vstride);
vba.ApplyTo(vformat, vbuffer);
vba.Position<Float3>(0) = Float3(-1.0f, -1.0f, +1.0f);
vba.Position<Float3>(1) = Float3(-1.0f, -1.0f, -1.0f);
vba.Position<Float3>(2) = Float3(-1.0f, +1.0f, +1.0f);
vba.Position<Float3>(3) = Float3(-1.0f, +1.0f, -1.0f);
vba.TCoord<Float2>(0, 0) = Float2(0.0f, 0.0f);
vba.TCoord<Float2>(0, 1) = Float2(1.0f, 0.0f);
vba.TCoord<Float2>(0, 2) = Float2(0.0f, 1.0f);
vba.TCoord<Float2>(0, 3) = Float2(1.0f, 1.0f);
wall = new0 TriMesh(vformat, vbuffer, ibuffer);
room->AttachChild(wall);
textureName = Environment::GetPathR("XmFace.wmtf");
Texture2D* xmTexture = Texture2D::LoadWMTF(textureName);
wall->SetEffectInstance(effect->CreateInstance(xmTexture));
// +y wall
vbuffer = new0 VertexBuffer(4, vstride);
vba.ApplyTo(vformat, vbuffer);
vba.Position<Float3>(0) = Float3(+1.0f, +1.0f, +1.0f);
vba.Position<Float3>(1) = Float3(-1.0f, +1.0f, +1.0f);
vba.Position<Float3>(2) = Float3(+1.0f, +1.0f, -1.0f);
vba.Position<Float3>(3) = Float3(-1.0f, +1.0f, -1.0f);
vba.TCoord<Float2>(0, 0) = Float2(0.0f, 0.0f);
vba.TCoord<Float2>(0, 1) = Float2(1.0f, 0.0f);
vba.TCoord<Float2>(0, 2) = Float2(0.0f, 1.0f);
vba.TCoord<Float2>(0, 3) = Float2(1.0f, 1.0f);
wall = new0 TriMesh(vformat, vbuffer, ibuffer);
room->AttachChild(wall);
textureName = Environment::GetPathR("YpFace.wmtf");
Texture2D* ypTexture = Texture2D::LoadWMTF(textureName);
wall->SetEffectInstance(effect->CreateInstance(ypTexture));
// -y wall
vbuffer = new0 VertexBuffer(4, vstride);
vba.ApplyTo(vformat, vbuffer);
vba.Position<Float3>(0) = Float3(+1.0f, -1.0f, -1.0f);
vba.Position<Float3>(1) = Float3(-1.0f, -1.0f, -1.0f);
vba.Position<Float3>(2) = Float3(+1.0f, -1.0f, +1.0f);
vba.Position<Float3>(3) = Float3(-1.0f, -1.0f, +1.0f);
vba.TCoord<Float2>(0, 0) = Float2(0.0f, 0.0f);
vba.TCoord<Float2>(0, 1) = Float2(1.0f, 0.0f);
vba.TCoord<Float2>(0, 2) = Float2(0.0f, 1.0f);
vba.TCoord<Float2>(0, 3) = Float2(1.0f, 1.0f);
wall = new0 TriMesh(vformat, vbuffer, ibuffer);
room->AttachChild(wall);
textureName = Environment::GetPathR("YmFace.wmtf");
Texture2D* ymTexture = Texture2D::LoadWMTF(textureName);
wall->SetEffectInstance(effect->CreateInstance(ymTexture));
// +z wall
vbuffer = new0 VertexBuffer(4, vstride);
vba.ApplyTo(vformat, vbuffer);
vba.Position<Float3>(0) = Float3(+1.0f, -1.0f, +1.0f);
vba.Position<Float3>(1) = Float3(-1.0f, -1.0f, +1.0f);
vba.Position<Float3>(2) = Float3(+1.0f, +1.0f, +1.0f);
vba.Position<Float3>(3) = Float3(-1.0f, +1.0f, +1.0f);
vba.TCoord<Float2>(0, 0) = Float2(0.0f, 0.0f);
vba.TCoord<Float2>(0, 1) = Float2(1.0f, 0.0f);
vba.TCoord<Float2>(0, 2) = Float2(0.0f, 1.0f);
vba.TCoord<Float2>(0, 3) = Float2(1.0f, 1.0f);
wall = new0 TriMesh(vformat, vbuffer, ibuffer);
room->AttachChild(wall);
textureName = Environment::GetPathR("ZpFace.wmtf");
Texture2D* zpTexture = Texture2D::LoadWMTF(textureName);
wall->SetEffectInstance(effect->CreateInstance(zpTexture));
// -z wall
vbuffer = new0 VertexBuffer(4, vstride);
vba.ApplyTo(vformat, vbuffer);
vba.Position<Float3>(0) = Float3(-1.0f, -1.0f, -1.0f);
vba.Position<Float3>(1) = Float3(+1.0f, -1.0f, -1.0f);
vba.Position<Float3>(2) = Float3(-1.0f, +1.0f, -1.0f);
vba.Position<Float3>(3) = Float3(+1.0f, +1.0f, -1.0f);
vba.TCoord<Float2>(0, 0) = Float2(0.0f, 0.0f);
vba.TCoord<Float2>(0, 1) = Float2(1.0f, 0.0f);
vba.TCoord<Float2>(0, 2) = Float2(0.0f, 1.0f);
vba.TCoord<Float2>(0, 3) = Float2(1.0f, 1.0f);
wall = new0 TriMesh(vformat, vbuffer, ibuffer);
room->AttachChild(wall);
textureName = Environment::GetPathR("ZmFace.wmtf");
Texture2D* zmTexture = Texture2D::LoadWMTF(textureName);
wall->SetEffectInstance(effect->CreateInstance(zmTexture));
// A sphere to reflect the environment via a cube map. The colors will
// be used to modulate the cube map texture.
vformat = VertexFormat::Create(3,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_NORMAL, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT3, 0);
vstride = vformat->GetStride();
mSphere = StandardMesh(vformat).Sphere(64, 64, 0.125f);
room->AttachChild(mSphere);
// Generate random vertex colors for the sphere. The StandardMesh class
// produces a sphere with duplicated vertices along a longitude line.
// This allows texture coordinates to be assigned in a manner that treats
// the sphere as if it were a rectangle mesh. For vertex colors, we want
// the duplicated vertices to have the same color, so a hash table is used
// to look up vertex colors for the duplicates.
vba.ApplyTo(mSphere);
std::map<Float3,Float3> dataMap;
for (int i = 0; i < vba.GetNumVertices(); ++i)
{
Float3& position = vba.Position<Float3>(i);
Float3& color = vba.Color<Float3>(0, i);
std::map<Float3,Float3>::iterator iter = dataMap.find(position);
if (iter != dataMap.end())
{
color = iter->second;
}
else
{
color[0] = 0.0f;
color[1] = Mathf::IntervalRandom(0.5f, 0.75f);
color[2] = Mathf::IntervalRandom(0.75f, 1.0f);
dataMap.insert(std::make_pair(position, color));
}
}
// Create the cube map and attach it to the sphere.
std::string effectFile = Environment::GetPathR("CubeMap.wmfx");
CubeMapEffect* cubeMapEffect = new0 CubeMapEffect(effectFile);
ShaderFloat* reflectivity = new0 ShaderFloat(1);
(*reflectivity)[0] = 0.5f;
std::string cubeName = Environment::GetPathR("CubeMap.wmtf");
TextureCube* cubeTexture = TextureCube::LoadWMTF(cubeName);
cubeTexture->GenerateMipmaps();
mCubeMapInstance = cubeMapEffect->CreateInstance(cubeTexture,
reflectivity, false);
mSphere->SetEffectInstance(mCubeMapInstance);
// Allow culling to be disabled on the sphere so when you move inside
// the sphere, you can see the previously hidden facets and verify that
// the cube image for those facets is correctly oriented.
mSphereCullState = cubeMapEffect->GetCullState(0, 0);
}
//----------------------------------------------------------------------------
void GlossMaps::CreateScene ()
{
mScene = new0 Node();
mTrnNode = new0 Node();
mScene->AttachChild(mTrnNode);
// Create vertex and index buffers to be shared by two meshes.
VertexFormat* vformat = VertexFormat::Create(3,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_NORMAL, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT2, 0);
int vstride = vformat->GetStride();
VertexBuffer* vbuffer = new0 VertexBuffer(4, vstride);
VertexBufferAccessor vba(vformat, vbuffer);
Float3 yVector(0.0f, 1.0f, 0.0f);
vba.Position<Float3>(0) = Float3(-0.5f, 0.0f, -0.5f);
vba.Position<Float3>(1) = Float3(-0.5f, 0.0f, 0.5f);
vba.Position<Float3>(2) = Float3( 0.5f, 0.0f, 0.5f);
vba.Position<Float3>(3) = Float3( 0.5f, 0.0f, -0.5f);
vba.Normal<Float3>(0) = yVector;
vba.Normal<Float3>(1) = yVector;
vba.Normal<Float3>(2) = yVector;
vba.Normal<Float3>(3) = yVector;
vba.TCoord<Float2>(0, 0) = Float2(1.0f, 0.0f);
vba.TCoord<Float2>(0, 1) = Float2(1.0f, 1.0f);
vba.TCoord<Float2>(0, 2) = Float2(0.0f, 1.0f);
vba.TCoord<Float2>(0, 3) = Float2(0.0f, 0.0f);
IndexBuffer* ibuffer = new0 IndexBuffer(6, sizeof(int));
int* indices = (int*)ibuffer->GetData();
indices[0] = 0; indices[1] = 1; indices[2] = 3;
indices[3] = 3; indices[4] = 1; indices[5] = 2;
// The light and material are used by both the gloss and non-gloss
// objects.
Light* light = new0 Light(Light::LT_DIRECTIONAL);
light->Ambient = Float4(0.1f, 0.1f, 0.1f, 1.0f);
light->Diffuse = Float4(0.6f, 0.6f, 0.6f, 1.0f);
light->Specular = Float4(1.0f, 1.0f, 1.0f, 1.0f);
light->DVector = AVector(0.0f, -1.0f, 0.0f);
Material* material = new0 Material();
material->Ambient = Float4(0.2f, 0.2f, 0.2f, 1.0f);
material->Diffuse = Float4(0.7f, 0.7f, 0.7f, 1.0f);
material->Specular = Float4(1.0f, 1.0f, 1.0f, 25.0f);
// Create a non-gloss-mapped square.
TriMesh* squareNoGloss = new0 TriMesh(vformat, vbuffer, ibuffer);
squareNoGloss->LocalTransform.SetRotate(HMatrix(AVector::UNIT_X,
-0.25f*Mathf::PI));
squareNoGloss->LocalTransform.SetTranslate(APoint(1.0f, -1.0f, 0.0f));
squareNoGloss->SetEffectInstance(
LightDirPerVerEffect::CreateUniqueInstance(light, material));
mTrnNode->AttachChild(squareNoGloss);
// Create a gloss-mapped square.
TriMesh* squareGloss = new0 TriMesh(vformat, vbuffer, ibuffer);
squareGloss->LocalTransform.SetRotate(HMatrix(AVector::UNIT_X,
-0.25f*Mathf::PI));
squareGloss->LocalTransform.SetTranslate(APoint(-1.0f, -1.0f, 0.0f));
mTrnNode->AttachChild(squareGloss);
std::string effectFile = Environment::GetPathR("GlossMap.wmfx");
GlossMapEffect* effect = new0 GlossMapEffect(effectFile);
std::string baseName = Environment::GetPathR("Magic.wmtf");
Texture2D* baseTexture = Texture2D::LoadWMTF(baseName);
squareGloss->SetEffectInstance(effect->CreateInstance(baseTexture,
light, material));
}
//----------------------------------------------------------------------------
TriMesh* Castle::LoadMeshPNT2 (const std::string& name)
{
// Get the vertex format.
VertexFormat* vformat = VertexFormat::Create(4,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_NORMAL, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT2, 0,
VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT2, 1);
int vstride = vformat->GetStride();
// Get the positions.
std::string filename = Environment::GetPathR(name);
std::ifstream inFile(filename.c_str());
int numPositions;
Float3* positions;
GetFloat3(inFile, numPositions, positions);
// Get the normals.
int numNormals;
Float3* normals;
GetFloat3(inFile, numNormals, normals);
// Get the texture coordinates for unit 0.
int numTCoords0;
Float2* tcoords0;
GetFloat2(inFile, numTCoords0, tcoords0);
// Get the texture coordinates for unit 1.
int numTCoords1;
Float2* tcoords1;
GetFloat2(inFile, numTCoords1, tcoords1);
// Get the vertices and indices.
int numTriangles;
inFile >> numTriangles;
VertexPNT2* vertices = new1<VertexPNT2>(3*numTriangles);
std::vector<VertexPNT2> PNT2Array;
std::map<VertexPNT2,int> PNT2Map;
std::vector<int> indices;
for (int t = 0; t < numTriangles; ++t)
{
for (int j = 0, k = 3*t; j < 3; ++j, ++k)
{
VertexPNT2& vertex = vertices[k];
inFile >> vertex.PIndex;
inFile >> vertex.NIndex;
inFile >> vertex.T0Index;
inFile >> vertex.T1Index;
std::map<VertexPNT2,int>::iterator miter = PNT2Map.find(vertex);
int index;
if (miter != PNT2Map.end())
{
// Second or later time the vertex is encountered.
index = miter->second;
}
else
{
// First time the vertex is encountered.
index = (int)PNT2Array.size();
PNT2Map.insert(std::make_pair(vertex, index));
PNT2Array.push_back(vertex);
}
indices.push_back(index);
}
}
inFile.close();
// Build the mesh.
int numVertices = (int)PNT2Array.size();
VertexBuffer* vbuffer = new0 VertexBuffer(numVertices, vstride);
VertexBufferAccessor vba(vformat, vbuffer);
for (int i = 0; i < numVertices; ++i)
{
VertexPNT2& vertex = PNT2Array[i];
vba.Position<Float3>(i) = positions[vertex.PIndex];
vba.Normal<Float3>(i) = normals[vertex.NIndex];
vba.TCoord<Float2>(0, i) = tcoords0[vertex.T0Index];
vba.TCoord<Float2>(1, i) = tcoords1[vertex.T1Index];
}
int numIndices = (int)indices.size();
IndexBuffer* ibuffer = new0 IndexBuffer(numIndices, sizeof(int));
memcpy(ibuffer->GetData(), &indices[0], numIndices*sizeof(int));
delete1(vertices);
delete1(tcoords1);
delete1(tcoords0);
delete1(normals);
delete1(positions);
return new0 TriMesh(vformat, vbuffer, ibuffer);
}
