//----------------------------------------------------------------------------
void ExtremalQuery::CreateScene ()
{
mScene = new0 Node();
mWireState = new0 WireState();
mRenderer->SetOverrideWireState(mWireState);
mCullState = new0 CullState();
mCullState->Enabled = false;
mRenderer->SetOverrideCullState(mCullState);
const int numVertices = 32;
CreateConvexPolyhedron(numVertices);
mScene->AttachChild(CreateVisualConvexPolyhedron());
// Use small spheres to show the extreme points in the camera's right
// direction.
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT3, 0);
StandardMesh sm(vformat);
VertexColor3Effect* effect = new0 VertexColor3Effect();
// maximum sphere
mMaxSphere = sm.Sphere(8, 8, 0.05f);
mMaxSphere->SetEffectInstance(effect->CreateInstance());
mScene->AttachChild(mMaxSphere);
// minimum sphere
mMinSphere = sm.Sphere(8, 8, 0.05f);
mMinSphere->SetEffectInstance(effect->CreateInstance());
mScene->AttachChild(mMinSphere);
UpdateExtremePoints();
}
//----------------------------------------------------------------------------
bool FxCompiler::CreateEffect (const Program& vProgram,
const Program& pProgram)
{
InputArray vInputs, pInputs;
OutputArray vOutputs, pOutputs;
ConstantArray vConstants, pConstants;
SamplerArray vSamplers, pSamplers;
if (!Process(vProgram, vInputs, vOutputs, vConstants, vSamplers))
{
return false;
}
if (!Process(pProgram, pInputs, pOutputs, pConstants, pSamplers))
{
return false;
}
mVShader = (VertexShader*)CreateShader(true, vProgram, vInputs, vOutputs,
vConstants, vSamplers);
mPShader = (PixelShader*)CreateShader(false, pProgram, pInputs, pOutputs,
pConstants, pSamplers);
VisualPass* pass = new0 VisualPass();
pass->SetVertexShader(mVShader);
pass->SetPixelShader(mPShader);
// TODO. Once Cg FX files are parsed, the global state from each pass
// should be set here. For now, the application is responsible for
// setting the global state after the *.wmfx file is loaded.
pass->SetAlphaState(new0 AlphaState());
pass->SetCullState(new0 CullState());
pass->SetDepthState(new0 DepthState());
pass->SetOffsetState(new0 OffsetState());
pass->SetStencilState(new0 StencilState());
pass->SetWireState(new0 WireState());
// TODO. Once Cg FX files are parsed, we might have multiple techniques
// or multiple passes per technique.
VisualTechnique* technique = new0 VisualTechnique();
technique->InsertPass(pass);
mEffect = new0 VisualEffect();
mEffect->InsertTechnique(technique);
return true;
}
//----------------------------------------------------------------------------
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);
}
//----------------------------------------------------------------------------
void ConvexHull3D::CreateScene ()
{
mScene = new0 Node();
mTrnNode = new0 Node();
mScene->AttachChild(mTrnNode);
mWireState = new0 WireState();
mRenderer->SetOverrideWireState(mWireState);
mCullState = new0 CullState();
mCullState->Enabled = false;
mRenderer->SetOverrideCullState(mCullState);
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT3, 0);
TriMesh* sphere = StandardMesh(vformat).Sphere(8, 8, 0.01f);
sphere->SetEffectInstance(VertexColor3Effect::CreateUniqueInstance());
mTrnNode->SetChild(1, sphere);
// The current file is "Data/data01.txt".
LoadData();
}
//----------------------------------------------------------------------------
VisualEffectInstance* GeodesicHeightField::CreateEffectInstance ()
{
// Create the vertex shader.
VertexShader* vshader = new0 VertexShader("Wm5.DLight2MatTex",
3, 3, 16, 0, false);
vshader->SetInput(0, "modelPosition", Shader::VT_FLOAT3,
Shader::VS_POSITION);
vshader->SetInput(1, "modelNormal", Shader::VT_FLOAT3,
Shader::VS_NORMAL);
vshader->SetInput(2, "modelTCoord", Shader::VT_FLOAT2,
Shader::VS_TEXCOORD0);
vshader->SetOutput(0, "clipPosition", Shader::VT_FLOAT4,
Shader::VS_POSITION);
vshader->SetOutput(1, "vertexColor", Shader::VT_FLOAT4,
Shader::VS_COLOR0);
vshader->SetOutput(2, "vertexTCoord", Shader::VT_FLOAT2,
Shader::VS_TEXCOORD0);
vshader->SetConstant( 0, "PVWMatrix", 4);
vshader->SetConstant( 1, "CameraModelPosition", 1);
vshader->SetConstant( 2, "MaterialEmissive", 1);
vshader->SetConstant( 3, "MaterialAmbient", 1);
vshader->SetConstant( 4, "MaterialDiffuse", 1);
vshader->SetConstant( 5, "MaterialSpecular", 1);
vshader->SetConstant( 6, "Light0ModelDirection", 1);
vshader->SetConstant( 7, "Light0Ambient", 1);
vshader->SetConstant( 8, "Light0Diffuse", 1);
vshader->SetConstant( 9, "Light0Specular", 1);
vshader->SetConstant(10, "Light0Attenuation", 1);
vshader->SetConstant(11, "Light1ModelDirection", 1);
vshader->SetConstant(12, "Light1Ambient", 1);
vshader->SetConstant(13, "Light1Diffuse", 1);
vshader->SetConstant(14, "Light1Specular", 1);
vshader->SetConstant(15, "Light1Attenuation", 1);
vshader->SetBaseRegisters(msVRegisters);
vshader->SetPrograms(msVPrograms);
// Create the pixel shader.
PixelShader* pshader = new0 PixelShader("Wm5.DLight2MatTex",
2, 1, 0, 1, false);
pshader->SetInput(0, "vertexColor", Shader::VT_FLOAT4,
Shader::VS_COLOR0);
pshader->SetInput(1, "vertexTCoord", Shader::VT_FLOAT2,
Shader::VS_TEXCOORD0);
pshader->SetOutput(0, "pixelColor", Shader::VT_FLOAT4,
Shader::VS_COLOR0);
pshader->SetSampler(0, "BaseSampler", Shader::ST_2D);
pshader->SetFilter(0, Shader::SF_LINEAR /*_LINEAR */);
pshader->SetCoordinate(0, 0, Shader::SC_CLAMP_EDGE);
pshader->SetCoordinate(0, 1, Shader::SC_CLAMP_EDGE);
pshader->SetTextureUnits(msPTextureUnits);
pshader->SetPrograms(msPPrograms);
VisualPass* pass = new0 VisualPass();
pass->SetVertexShader(vshader);
pass->SetPixelShader(pshader);
pass->SetAlphaState(new0 AlphaState());
pass->SetCullState(new0 CullState());
pass->SetDepthState(new0 DepthState());
pass->SetOffsetState(new0 OffsetState());
pass->SetStencilState(new0 StencilState());
pass->SetWireState(new0 WireState());
// Create the effect.
VisualTechnique* technique = new0 VisualTechnique();
technique->InsertPass(pass);
VisualEffect* effect = new0 VisualEffect();
effect->InsertTechnique(technique);
// Create the material for the effect.
Float4 black(0.0f, 0.0f, 0.0f, 1.0f);
Float4 white(1.0f, 1.0f, 1.0f, 1.0f);
Material* material = new0 Material();
material->Emissive = black;
material->Ambient = Float4(0.24725f, 0.2245f, 0.0645f, 1.0f);
material->Diffuse = Float4(0.34615f, 0.3143f, 0.0903f, 1.0f);
material->Specular = Float4(0.797357f, 0.723991f, 0.208006f, 83.2f);
// Create the lights for the effect.
Light* light0 = new0 Light(Light::LT_DIRECTIONAL);
light0->SetDirection(AVector(0.0f, 0.0f, -1.0f));
light0->Ambient = white;
light0->Diffuse = white;
light0->Specular = black;
Light* light1 = new0 Light(Light::LT_DIRECTIONAL);
light1->SetDirection(AVector(0.0f, 0.0f, 1.0f));
light1->Ambient = white;
light1->Diffuse = white;
light1->Specular = black;
// Create a texture for the effect.
mTexture = new0 Texture2D(Texture::TF_A8R8G8B8, 512, 512, 0);
unsigned char* data = (unsigned char*)mTexture->GetData(0);
memset(data, 0xFF, mTexture->GetNumLevelBytes(0));
// Create an instance of the effect.
VisualEffectInstance* instance = new0 VisualEffectInstance(effect, 0);
instance->SetVertexConstant(0, 0,
new0 PVWMatrixConstant());
instance->SetVertexConstant(0, 1,
new0 CameraModelPositionConstant());
instance->SetVertexConstant(0, 2,
new0 MaterialEmissiveConstant(material));
instance->SetVertexConstant(0, 3,
new0 MaterialAmbientConstant(material));
instance->SetVertexConstant(0, 4,
new0 MaterialDiffuseConstant(material));
instance->SetVertexConstant(0, 5,
new0 MaterialSpecularConstant(material));
instance->SetVertexConstant(0, 6,
new0 LightModelDVectorConstant(light0));
instance->SetVertexConstant(0, 7,
new0 LightAmbientConstant(light0));
instance->SetVertexConstant(0, 8,
new0 LightDiffuseConstant(light0));
instance->SetVertexConstant(0, 9,
new0 LightSpecularConstant(light0));
instance->SetVertexConstant(0, 10,
new0 LightAttenuationConstant(light0));
instance->SetVertexConstant(0, 11,
new0 LightModelDVectorConstant(light1));
instance->SetVertexConstant(0, 12,
new0 LightAmbientConstant(light1));
instance->SetVertexConstant(0, 13,
new0 LightDiffuseConstant(light1));
instance->SetVertexConstant(0, 14,
new0 LightSpecularConstant(light1));
instance->SetVertexConstant(0, 15,
new0 LightAttenuationConstant(light1));
instance->SetPixelTexture(0, 0, mTexture);
return instance;
}
//----------------------------------------------------------------------------
void GeodesicHeightField::CreateScene ()
{
mScene = new0 Node();
mWireState = new0 WireState();
mRenderer->SetOverrideWireState(mWireState);
mCullState = new0 CullState();
mCullState->Enabled = false;
mRenderer->SetOverrideCullState(mCullState);
// Create the ground. It covers a square with vertices (1,1,0), (1,-1,0),
// (-1,1,0), and (-1,-1,0).
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);
const int xSize = 64;
const int ySize = 64;
const float xExtent = 1.0f;
const float yExtent = 1.0f;
mMesh = StandardMesh(vformat).Rectangle(xSize, ySize, xExtent, yExtent);
// Create a B-Spline height field. The heights of the control point are
// defined in an input file. The input file is structured as
//
// numUCtrlPoints numVCtrlPoints UDegree VDegree
// z[0][0] z[0][1] ... z[0][numV-1]
// z[1][0] z[1][1] ... z[1][numV_1]
// :
// z[numU-1][0] z[numU-1][1] ... z[numU-1][numV-1]
std::string path = Environment::GetPathR("ControlPoints.txt");
std::ifstream inFile(path.c_str());
int numUCtrlPoints, numVCtrlPoints, uDegree, vDegree;
double height;
inFile >> numUCtrlPoints;
inFile >> numVCtrlPoints;
inFile >> uDegree;
inFile >> vDegree;
Vector3d** ctrlPoints = new2<Vector3d>(numUCtrlPoints, numVCtrlPoints);
int i;
for (i = 0; i < numUCtrlPoints; ++i)
{
double u = (double)(xExtent*(-1.0f + 2.0f*i/(numUCtrlPoints-1)));
for (int j = 0; j < numVCtrlPoints; ++j)
{
double v = (double)(yExtent*(-1.0f + 2.0f*j/(numVCtrlPoints-1)));
inFile >> height;
ctrlPoints[i][j] = Vector3d(u, v, height);
}
}
inFile.close();
mSurface = new0 BSplineRectangled(numUCtrlPoints, numVCtrlPoints,
ctrlPoints, uDegree, vDegree, false, false, true, true);
delete2(ctrlPoints);
VertexBufferAccessor vba(mMesh);
for (i = 0; i < vba.GetNumVertices(); ++i)
{
Vector3f& position = vba.Position<Vector3f>(i);
double u = (double)((position.X() + xExtent)/(2.0f*xExtent));
double v = (double)((position.Y() + yExtent)/(2.0f*yExtent));
position.Z() = (float)mSurface->P(u,v).Z();
}
mMesh->UpdateModelSpace(Visual::GU_NORMALS);
// Attach an effect that uses lights, material, and texture.
mMesh->SetEffectInstance(CreateEffectInstance());
mScene->AttachChild(mMesh);
// Create the geodesic calculator.
mGeodesic = new0 BSplineGeodesicd(*mSurface);
mGeodesic->Subdivisions = 6;
mGeodesic->Refinements = 1;
mGeodesic->SearchRadius = 0.1;
mGeodesic->RefineCallback = &GeodesicHeightField::RefineCallback;
mPQuantity = (1 << mGeodesic->Subdivisions) + 1;
}
//----------------------------------------------------------------------------
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 BSplineSurfaceFitter::CreateScene ()
{
mScene = new0 Node();
mWireState = new0 WireState();
mRenderer->SetOverrideWireState(mWireState);
mCullState = new0 CullState();
mCullState->Enabled = false;
mRenderer->SetOverrideCullState(mCullState);
// Begin with a flat 64x64 height field.
const int numSamples = 64;
const float extent = 8.0f;
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT2, 0);
mHeightField = StandardMesh(vformat).Rectangle(numSamples, numSamples,
extent, extent);
mScene->AttachChild(mHeightField);
// Set the heights based on a precomputed height field. Also create a
// texture image to go with the height field.
std::string path = Environment::GetPathR("HeightField.wmtf");
Texture2D* texture = Texture2D::LoadWMTF(path);
VisualEffectInstance* instance = Texture2DEffect::CreateUniqueInstance(
texture, Shader::SF_LINEAR, Shader::SC_CLAMP_EDGE,
Shader::SC_CLAMP_EDGE);
mHeightField->SetEffectInstance(instance);
unsigned char* data = (unsigned char*)texture->GetData(0);
VertexBufferAccessor vba(mHeightField);
Vector3f** samplePoints = new2<Vector3f>(numSamples, numSamples);
int i;
for (i = 0; i < vba.GetNumVertices(); ++i)
{
unsigned char value = *data;
float height = 3.0f*((float)value)/255.0f +
0.05f*Mathf::SymmetricRandom();
*data++ = (unsigned char)Mathf::IntervalRandom(32.0f, 64.0f);
*data++ = 3*(128 - value/2)/4;
*data++ = 0;
data++;
vba.Position<Vector3f>(i).Z() = height;
samplePoints[i % numSamples][i / numSamples] =
vba.Position<Vector3f>(i);
}
// Compute a B-Spline surface with NxN control points, where N < 64.
// This surface will be sampled to 64x64 and displayed together with the
// original height field for comparison.
const int numCtrlPoints = 32;
const int degree = 3;
BSplineSurfaceFitf fitter(degree, numCtrlPoints, numSamples, degree,
numCtrlPoints, numSamples, samplePoints);
delete2(samplePoints);
vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT4, 0);
mFittedField = StandardMesh(vformat).Rectangle(numSamples, numSamples,
extent, extent);
mScene->AttachChild(mFittedField);
vba.ApplyTo(mFittedField);
Float4 translucent(1.0f, 1.0f, 1.0f, 0.5f);
for (i = 0; i < vba.GetNumVertices(); ++i)
{
float u = 0.5f*(vba.Position<Vector3f>(i).X()/extent + 1.0f);
float v = 0.5f*(vba.Position<Vector3f>(i).Y()/extent + 1.0f);
vba.Position<Vector3f>(i) = fitter.GetPosition(u, v);
vba.Color<Float4>(0,i) = translucent;
}
instance = VertexColor4Effect::CreateUniqueInstance();
mFittedField->SetEffectInstance(instance);
instance->GetEffect()->GetAlphaState(0, 0)->BlendEnabled = true;
}
//----------------------------------------------------------------------------
void CollisionsBoundTree::CreateScene ()
{
// The root of the scene will have two cylinders as children.
mScene = new0 Node();
mWireState = new0 WireState();
mRenderer->SetOverrideWireState(mWireState);
mCullState = new0 CullState();
mCullState->Enabled = false;
mRenderer->SetOverrideCullState(mCullState);
// Create a texture image to be used by both cylinders.
Texture2D* texture = new0 Texture2D(Texture::TF_A8R8G8B8, 2, 2, 1);
unsigned int* data = (unsigned int*)texture->GetData(0);
data[0] = Color::MakeR8G8B8(0, 0, 255); // blue
data[1] = Color::MakeR8G8B8(0, 255, 255); // cyan
data[2] = Color::MakeR8G8B8(255, 0, 0); // red
data[3] = Color::MakeR8G8B8(255, 255, 0); // yellow
Texture2DEffect* effect = new0 Texture2DEffect(Shader::SF_LINEAR);
// Create two cylinders, one short and thick, one tall and thin.
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT2, 0);
StandardMesh sm(vformat);
VertexBufferAccessor vba;
int i;
mCylinder0 = sm.Cylinder(8, 16, 1.0f, 2.0f, false);
vba.ApplyTo(mCylinder0);
for (i = 0; i < vba.GetNumVertices(); ++i)
{
vba.TCoord<Float2>(0, i) = mBlueUV;
}
mCylinder0->SetEffectInstance(effect->CreateInstance(texture));
mScene->AttachChild(mCylinder0);
mCylinder1 = sm.Cylinder(16,8,0.25,4.0,false);
vba.ApplyTo(mCylinder1);
for (i = 0; i < vba.GetNumVertices(); ++i)
{
vba.TCoord<Float2>(0, i) = mRedUV;
}
mCylinder1->SetEffectInstance(effect->CreateInstance(texture));
mScene->AttachChild(mCylinder1);
mScene->Update();
// Set up the collision system. Record0 handles the collision response.
// Record1 is not given a callback so that 'double processing' of the
// events does not occur.
CTree* tree0 = new0 CTree(mCylinder0, 1, false);
CRecord* record0 = new0 CRecord(tree0, 0, Response, this);
CTree* tree1 = new0 CTree(mCylinder1, 1, false);
CRecord* record1 = new0 CRecord(tree1, 0, 0, 0);
mGroup = new0 CGroup();
mGroup->Add(record0);
mGroup->Add(record1);
ResetColors();
mGroup->TestIntersection();
}
//----------------------------------------------------------------------------
void BillboardNodes::CreateScene ()
{
mScene = new0 Node();
mCullState = new0 CullState();
mRenderer->SetOverrideCullState(mCullState);
mWireState = new0 WireState();
mRenderer->SetOverrideWireState(mWireState);
// All triangle meshes have this common vertex format. Use StandardMesh
// to create these meshes.
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT2, 0);
StandardMesh stdMesh(vformat);
// Create the ground. It covers a square with vertices (1,1,0), (1,-1,0),
// (-1,1,0), and (-1,-1,0). Multiply the texture coordinates by a factor
// to enhance the wrap-around.
mGround = stdMesh.Rectangle(2, 2, 16.0f, 16.0f);
VertexBufferAccessor vba(mGround);
int i;
for (i = 0; i < vba.GetNumVertices(); ++i)
{
Float2& tcoord = vba.TCoord<Float2>(0, i);
tcoord[0] *= 128.0f;
tcoord[1] *= 128.0f;
}
// Create a texture effect for the ground.
std::string path = Environment::GetPathR("Horizontal.wmtf");
Texture2D* texture = Texture2D::LoadWMTF(path);
VisualEffectInstance* instance = Texture2DEffect::CreateUniqueInstance(
texture, Shader::SF_LINEAR_LINEAR, Shader::SC_REPEAT,
Shader::SC_REPEAT);
mGround->SetEffectInstance(instance);
mScene->AttachChild(mGround);
// Create a rectangle mesh. The mesh is in the xy-plane. Do not apply
// local transformations to the mesh. Use the billboard node transforms
// to control the mesh location and orientation.
mRectangle = stdMesh.Rectangle(2, 2, 0.125f, 0.25f);
// Create a texture effect for the rectangle and for the torus.
Texture2DEffect* geomEffect = new0 Texture2DEffect(Shader::SF_LINEAR);
path = Environment::GetPathR("RedSky.wmtf");
texture = Texture2D::LoadWMTF(path);
mRectangle->SetEffectInstance(geomEffect->CreateInstance(texture));
// Create a billboard node that causes a rectangle to always be facing
// the camera. This is the type of billboard for an avatar.
mBillboard0 = new0 BillboardNode(mCamera);
mBillboard0->AttachChild(mRectangle);
mScene->AttachChild(mBillboard0);
// The billboard rotation is about its model-space up-vector (0,1,0). In
// this application, world-space up is (0,0,1). Locally rotate the
// billboard so it's up-vector matches the world's.
mBillboard0->LocalTransform.SetTranslate(APoint(-0.25f, 0.0f, 0.25f));
mBillboard0->LocalTransform.SetRotate(HMatrix(AVector::UNIT_X,
Mathf::HALF_PI));
// Create a torus mesh. Do not apply local transformations to the mesh.
// Use the billboard node transforms to control the mesh location and
// orientation.
mTorus = StandardMesh(vformat, false).Torus(16, 16, 1.0f, 0.25f);
mTorus->LocalTransform.SetUniformScale(0.1f);
// Create a texture effect for the torus. It uses the RedSky image that
// the rectangle uses.
mTorus->SetEffectInstance(geomEffect->CreateInstance(texture));
// Create a billboard node that causes an object to always be oriented
// the same way relative to the camera.
mBillboard1 = new0 BillboardNode(mCamera);
mBillboard1->AttachChild(mTorus);
mScene->AttachChild(mBillboard1);
// The billboard rotation is about its model-space up-vector (0,1,0). In
// this application, world-space up is (0,0,1). Locally rotate the
// billboard so it's up-vector matches the world's.
mBillboard1->LocalTransform.SetTranslate(APoint(0.25f, 0.0f, 0.25f));
mBillboard1->LocalTransform.SetRotate(HMatrix(AVector::UNIT_X,
Mathf::HALF_PI));
#ifdef DEMONSTRATE_VIEWPORT_BOUNDING_RECTANGLE
// The screen camera is designed to map (x,y,z) in [0,1]^3 to (x',y,'z')
// in [-1,1]^2 x [0,1].
mSSCamera = new0 Camera(false);
mSSCamera->SetFrustum(0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f);
mSSCamera->SetFrame(APoint::ORIGIN, AVector::UNIT_Z, AVector::UNIT_Y,
AVector::UNIT_X);
// Create a semitransparent screen rectangle.
VertexFormat* ssVFormat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT4, 0);
int ssVStride = ssVFormat->GetStride();
VertexBuffer* ssVBuffer = new0 VertexBuffer(4, ssVStride);
VertexBufferAccessor ssVba(ssVFormat, ssVBuffer);
Float4 ssColor(0.0f, 0.0f, 1.0f, 0.25f);
ssVba.Position<Float3>(0) = Float3(0.0f, 0.0f, 0.0f);
ssVba.Position<Float3>(1) = Float3(1.0f, 0.0f, 0.0f);
ssVba.Position<Float3>(2) = Float3(1.0f, 1.0f, 0.0f);
ssVba.Position<Float3>(3) = Float3(0.0f, 1.0f, 0.0f);
ssVba.Color<Float4>(0, 0) = ssColor;
ssVba.Color<Float4>(0, 1) = ssColor;
ssVba.Color<Float4>(0, 2) = ssColor;
ssVba.Color<Float4>(0, 3) = ssColor;
IndexBuffer* ssIBuffer = new0 IndexBuffer(6, sizeof(int));
int* indices = (int*)ssIBuffer->GetData();
indices[0] = 0; indices[1] = 1; indices[2] = 2;
indices[3] = 0; indices[4] = 2; indices[5] = 3;
mSSRectangle = new0 TriMesh(ssVFormat, ssVBuffer, ssIBuffer);
mSSRectangle->Update();
// Create a vertex color effect for the screen rectangle.
VertexColor4Effect* ssEffect = new0 VertexColor4Effect();
mSSRectangle->SetEffectInstance(ssEffect->CreateInstance());
// Alpha blending must be enabled to obtain the semitransparency.
ssEffect->GetAlphaState(0, 0)->BlendEnabled = true;
#endif
}
RenderPass RenderStage::createRenderPassFromJson(const JSONValue& renderPassJSON)
{
GraphicSystem& graphicSystem = renderer.getGraphicSystem();
RenderPass renderPass;
auto clearColorJSON = renderPassJSON.getJSONValue("clearColor");
auto colorWriteJSON = renderPassJSON.getJSONValue("colorWrite");
auto depthWriteJSON = renderPassJSON.getJSONValue("depthWrite");
auto renderTargetLayerJSON = renderPassJSON.getJSONValue("renderTargetLayer");
auto flagsJSON = renderPassJSON.getJSONValue("flags");
if(!clearColorJSON.isNull())
renderPass.clearColor = clearColorJSON.getVector4();
if(!colorWriteJSON.isNull())
renderPass.colorWrite = colorWriteJSON.getBool();
if(!depthWriteJSON.isNull())
renderPass.depthWrite = depthWriteJSON.getBool();
if(!renderTargetLayerJSON.isNull())
renderPass.renderTargetLayer = renderTargetLayerJSON.getInt();
if(!flagsJSON.isNull())
{
unsigned int flags = 0;
for(unsigned int i = 0; i < flagsJSON.getSize(); ++i)
{
if(flagsJSON.getJSONArrayItem(i).getString().compare("CLEAR_COLOR") == 0)
flags |= CLEAR_COLOR;
if(flagsJSON.getJSONArrayItem(i).getString().compare("CLEAR_DEPTH") == 0)
flags |= CLEAR_DEPTH;
}
renderPass.flags = flags;
}
auto viewPortJSON = renderPassJSON.getJSONValue("viewPort");
if(!viewPortJSON.isNull())
{
FixedArray<int, 4> viewPort = viewPortJSON.getInt4();
renderPass.viewPort.set(viewPort[0], viewPort[1], viewPort[2], viewPort[3]);
}
else
renderPass.viewPort = renderer.getScreenViewPort();
auto renderTargetJSON = renderPassJSON.getJSONValue("renderTarget");
renderPass.renderTarget = graphicSystem.createRenderTarget(renderTargetJSON);
auto shaderPasses = renderPassJSON.getJSONValue("shaderPasses");
if(!shaderPasses.isNull())
{
for(unsigned int i = 0; i < shaderPasses.getSize(); ++i)
{
auto shaderPassJSON = shaderPasses.getJSONArrayItem(i);
auto programJSON = shaderPassJSON.getJSONValue("shaderProgram");
auto vertexDataJSON = shaderPassJSON.getJSONValue("vertexData");
auto rasterStateJSON = shaderPassJSON.getJSONValue("rasterState");
auto shaderParameterBlocksJSON = shaderPassJSON.getJSONValue("shaderParameterBlocks");
auto texturesJSON = shaderPassJSON.getJSONValue("textures");
ShaderPass shaderPass;
if(!vertexDataJSON.isNull())
{
if(vertexDataJSON.getString().compare("fullScreenQuad") == 0)
shaderPass.vertexData = renderer.getFullScreenQuad();
}
if(!rasterStateJSON.isNull())
{
auto blendFunctionJSON = rasterStateJSON.getJSONValue("blendFunction");
auto compareFunctionJSON = rasterStateJSON.getJSONValue("compareFunction");
auto cullFaceJSON = rasterStateJSON.getJSONValue("cullFace");
auto blendState = !blendFunctionJSON.isNull() ? BlendState(true, enumFromString<BlendFunction>(blendFunctionJSON.getString())) : BlendState(false, BlendFunction::Replace);
auto compareState = !compareFunctionJSON.isNull() ? CompareState(true, enumFromString<CompareFunction>(compareFunctionJSON.getString())) : CompareState(false, CompareFunction::Never);
auto cullState = !cullFaceJSON.isNull() ? CullState(true, enumFromString<CullFace>(cullFaceJSON.getString())) : CullState(false, CullFace::Back);
shaderPass.rasterState = RasterState(blendState, compareState, cullState);
}
if(!shaderParameterBlocksJSON.isNull())
{
for(unsigned int j = 0; j < shaderParameterBlocksJSON.getSize(); ++j)
{
ShaderParameterBlock* block = graphicSystem.createShaderParameterBlock(shaderParameterBlocksJSON.getJSONArrayItem(j));
if(block)
shaderPass.shaderParameterBlocks.pushBack(block);
}
}
if(!texturesJSON.isNull())
{
for(unsigned int j = 0; j < texturesJSON.getSize(); ++j)
{
Texture* texture = graphicSystem.createTexture(texturesJSON.getJSONArrayItem(j));
if(texture)
shaderPass.textures.pushBack(texture);
}
}
if(!programJSON.isNull())
shaderPass.program = graphicSystem.createShaderProgram(programJSON);
renderPass.shaderPasses.pushBack(shaderPass);
}
}
return renderPass;
}
//----------------------------------------------------------------------------
void Delaunay3D::CreateScene ()
{
int i, numVertices;
Vector3f* vertices;
#if 0
// test a cube
numVertices = 8;
vertices = new1<Vector3f>(numVertices);
vertices[0] = Vector3f(0.0f, 0.0f, 0.0f);
vertices[1] = Vector3f(1.0f, 0.0f, 0.0f);
vertices[2] = Vector3f(1.0f, 1.0f, 0.0f);
vertices[3] = Vector3f(0.0f, 1.0f, 0.0f);
vertices[4] = Vector3f(0.0f, 0.0f, 1.0f);
vertices[5] = Vector3f(1.0f, 0.0f, 1.0f);
vertices[6] = Vector3f(1.0f, 1.0f, 1.0f);
vertices[7] = Vector3f(0.0f, 1.0f, 1.0f);
#endif
#if 1
// randomly generated points
numVertices = 128;
vertices = new1<Vector3f>(numVertices);
vertices[0] = Vector3f::ZERO;
for (i = 1; i < numVertices; ++i)
{
vertices[i].X() = Mathf::SymmetricRandom();
vertices[i].Y() = Mathf::SymmetricRandom();
vertices[i].Z() = Mathf::SymmetricRandom();
}
#endif
mMin = vertices[0];
mMax = vertices[0];
for (i = 1; i < numVertices; ++i)
{
for (int j = 0; j < 3; ++j)
{
float value = vertices[i][j];
if (value < mMin[j])
{
mMin[j] = value;
}
else if (value > mMax[j])
{
mMax[j] = value;
}
}
}
mDelaunay = new0 Delaunay3f(numVertices, vertices, 0.001f, true,
Query::QT_REAL);
mScene = new0 Node();
mCullState = new0 CullState();
mCullState->Enabled = false;
mRenderer->SetOverrideCullState(mCullState);
mScene->AttachChild(CreateSphere());
for (int j = 0; j < mDelaunay->GetNumSimplices(); ++j)
{
mScene->AttachChild(CreateTetra(j));
}
}