Ejemplo n.º 1
0
//----------------------------------------------------------------------------
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();
}
Ejemplo n.º 2
0
//----------------------------------------------------------------------------
void VolumeFog::CreateScene ()
{
    // Create a screen-space camera for the background image.
    mScreenCamera = ScreenTarget::CreateCamera();

    // Create a screen polygon for the background image.
    VertexFormat* vformat = VertexFormat::Create(2,
        VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
        VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT2, 0);

    mScreenPolygon = ScreenTarget::CreateRectangle(vformat, GetWidth(),
        GetHeight(), 0.0f, 1.0f, 0.0f, 1.0f, 1.0f);

    std::string skyName = Environment::GetPathR("BlueSky.wmtf");
    Texture2D* skyTexture = Texture2D::LoadWMTF(skyName);
    Texture2DEffect* skyEffect = new0 Texture2DEffect();
    mScreenPolygon->SetEffectInstance(skyEffect->CreateInstance(skyTexture));

    // Create the scene graph for the terrain.
    mScene = new0 Node();

    // Begin with a flat height field.
    vformat = VertexFormat::Create(3,
        VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
        VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT4, 0,
        VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT2, 0);

    mMesh = StandardMesh(vformat).Rectangle(64, 64, 8.0f, 8.0f);
    mScene->AttachChild(mMesh);

    // Set the heights based on a precomputed height field.  Also create a
    // texture image to go with the height field.
    std::string heightFieldName = Environment::GetPathR("HeightField.wmtf");
    Texture2D* heightTexture = Texture2D::LoadWMTF(heightFieldName);
    unsigned char* data = (unsigned char*)heightTexture->GetData(0);
    Float4 white(1.0f, 1.0f, 1.0f, 0.0f);
    VertexBufferAccessor vba(mMesh);
    for (int i = 0; i < vba.GetNumVertices(); ++i)
    {
        unsigned char value = *data;
        float height = 3.0f*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++ = 255;

        vba.Position<Float3>(i)[2] = height;

        // The fog color is white.  The alpha channel is filled in by the
        // function UpdateFog().
        vba.Color<Float4>(0, i) = white;
    }

    UpdateFog();

    std::string effectFile = Environment::GetPathR("VolumeFog.wmfx");
    VolumeFogEffect* effect = new0 VolumeFogEffect(effectFile);
    mMesh->SetEffectInstance(effect->CreateInstance(heightTexture));
}
Ejemplo n.º 3
0
//----------------------------------------------------------------------------
void BlendedAnimations::CreateScene ()
{
	mWireState = new0 WireState();
	mRenderer->SetOverrideWireState(mWireState);

	mScene = new0 Node();
	mScene->AttachChild(mManager.GetRoot());

	// Create a floor to walk on.
	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);

	mFloor = StandardMesh(vformat).Rectangle(2, 2, 1024.0f, 2048.0f);
	VertexBufferAccessor vba(mFloor);
	for (int i = 0; i < vba.GetNumVertices(); ++i)
	{
		Float2& tcoord = vba.TCoord<Float2>(0, i);
		tcoord[0] *= 64.0f;
		tcoord[1] *= 256.0f;
	}

	std::string textureName = Environment::GetPathR("Grating.wmtf");
	Texture2D* texture = Texture2D::LoadWMTF(textureName);
	texture->GenerateMipmaps();
	mFloor->SetEffectInstance(Texture2DEffect::CreateUniqueInstance(texture,
	                          Shader::SF_LINEAR_LINEAR, Shader::SC_REPEAT, Shader::SC_REPEAT));

	mScene->AttachChild(mFloor);

	ComputeVisibleSet(mScene);
}
Ejemplo n.º 4
0
//----------------------------------------------------------------------------
void PointInPolyhedron::CreateScene ()
{
    mScene = new0 Node();
    mWireState = new0 WireState();
    mRenderer->SetOverrideWireState(mWireState);

    // Create a semitransparent sphere mesh.
    VertexFormat* vformatMesh = VertexFormat::Create(1,
        VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0);
    TriMesh* mesh = StandardMesh(vformatMesh).Sphere(16, 16, 1.0f);
    Material* material = new0 Material();
    material->Diffuse = Float4(1.0f, 0.0f, 0.0f, 0.25f);
    VisualEffectInstance* instance = MaterialEffect::CreateUniqueInstance(
        material);
    instance->GetEffect()->GetAlphaState(0, 0)->BlendEnabled = true;
    mesh->SetEffectInstance(instance);

    // Create the data structures for the polyhedron that represents the
    // sphere mesh.
    CreateQuery(mesh);

    // Create a set of random points.  Points inside the polyhedron are
    // colored white.  Points outside the polyhedron are colored blue.
    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(1024, vstride);
    VertexBufferAccessor vba(vformat, vbuffer);
    Float3 white(1.0f, 1.0f, 1.0f);
    Float3 blue(0.0f, 0.0f, 1.0f);
    for (int i = 0; i < vba.GetNumVertices(); ++i)
    {
        Vector3f random(Mathf::SymmetricRandom(),
            Mathf::SymmetricRandom(), Mathf::SymmetricRandom());

        vba.Position<Vector3f>(i) = random;

        if (mQuery->Contains(random))
        {
            vba.Color<Float3>(0, i) = white;
        }
        else
        {
            vba.Color<Float3>(0, i) = blue;
        }
    }

    DeleteQuery();

    mPoints = new0 Polypoint(vformat, vbuffer);
    mPoints->SetEffectInstance(VertexColor3Effect::CreateUniqueInstance());

    mScene->AttachChild(mPoints);
    mScene->AttachChild(mesh);
}
Ejemplo n.º 5
0
//----------------------------------------------------------------------------
TriMesh* Delaunay3D::CreateSphere () const
{
    VertexFormat* vformat = VertexFormat::Create(2,
        VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
        VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT3, 0);

    TriMesh* mesh = StandardMesh(vformat).Sphere(8, 8, 0.01f);
    mesh->SetEffectInstance(VertexColor3Effect::CreateUniqueInstance());
    mesh->Culling = Spatial::CULL_ALWAYS;
    return mesh;
}
//----------------------------------------------------------------------------
TriMesh* FoucaultPendulum::CreateFloor ()
{
    VertexFormat* vformat = VertexFormat::Create(2,
        VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
        VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT2, 0);

    TriMesh* floor = StandardMesh(vformat).Rectangle(2, 2, 32.0f, 32.0f);
    std::string path = Environment::GetPathR("Wood.wmtf");
    Texture2D* texture = Texture2D::LoadWMTF(path);
    floor->SetEffectInstance(Texture2DEffect::CreateUniqueInstance(texture,
        Shader::SF_LINEAR, Shader::SC_CLAMP_EDGE, Shader::SC_CLAMP_EDGE));

    return floor;
}
Ejemplo n.º 7
0
//----------------------------------------------------------------------------
void WaterDropFormation::CreatePlane ()
{
	VertexFormat* vformat = VertexFormat::Create(2,
	                        VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
	                        VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT2, 0);

	mPlane = StandardMesh(vformat).Rectangle(2, 2, 8.0f, 16.0f);

	std::string path = Environment::GetPathR("StoneCeiling.wmtf");
	Texture2D* texture = Texture2D::LoadWMTF(path);
	mPlane->SetEffectInstance(Texture2DEffect::CreateUniqueInstance(texture,
	                          Shader::SF_LINEAR, Shader::SC_CLAMP_EDGE, Shader::SC_CLAMP_EDGE));

	mTrnNode->AttachChild(mPlane);
}
Ejemplo n.º 8
0
//----------------------------------------------------------------------------
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);
}
Ejemplo n.º 9
0
//----------------------------------------------------------------------------
void NonuniformScale::CreateScene ()
{
    mScene = new0 Node();
    mWireState = new0 WireState();
    mRenderer->SetOverrideWireState(mWireState);

    VertexFormat* vformat = VertexFormat::Create(2,
        VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
        VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT2, 0);

    mMesh = StandardMesh(vformat).Dodecahedron();
    std::string path = Environment::GetPathR("Flower.wmtf");
    Texture2D* texture = Texture2D::LoadWMTF(path);
    mMesh->SetEffectInstance(Texture2DEffect::CreateUniqueInstance(texture,
        Shader::SF_LINEAR, Shader::SC_CLAMP_EDGE, Shader::SC_CLAMP_EDGE));
    mScene->AttachChild(mMesh);
}
Ejemplo n.º 10
0
//----------------------------------------------------------------------------
TriMesh* ConvexHull3D::CreateSphere ()
{
    VertexFormat* vformat = VertexFormat::Create(2,
        VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
        VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT3, 0);

    Float3 white(1.0f, 1.0f, 1.0f);
    float radius = 0.01f;
    TriMesh* sphere = StandardMesh(vformat).Sphere(8, 8, radius);
    VertexBufferAccessor vba(sphere);
    for (int i = 0; i < vba.GetNumVertices(); ++i)
    {
        vba.Color<Float3>(0, i) = white;
    }

    sphere->SetEffectInstance(VertexColor3Effect::CreateUniqueInstance());
    return sphere;
}
Ejemplo n.º 11
0
//----------------------------------------------------------------------------
void SphereMaps::CreateScene ()
{
    mScene = new0 Node();
    mTrnNode = new0 Node();
    mScene->AttachChild(mTrnNode);

    VertexFormat* vformat = VertexFormat::Create(2,
        VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
        VertexFormat::AU_NORMAL, VertexFormat::AT_FLOAT3, 0);

    TriMesh* mesh = StandardMesh(vformat).Torus(64, 64, 1.0f, 0.5f);
    mTrnNode->AttachChild(mesh);

    std::string effectFile = Environment::GetPathR("SphereMap.wmfx");
    SphereMapEffect* effect = new0 SphereMapEffect(effectFile);
    std::string environmentName = Environment::GetPathR("SphereMap.wmtf");
    Texture2D* environmentTexture = Texture2D::LoadWMTF(environmentName);
    mesh->SetEffectInstance(effect->CreateInstance(environmentTexture));
}
Ejemplo n.º 12
0
//----------------------------------------------------------------------------
BspNode* BspNodes::CreateNode (const Vector2f& v0, const Vector2f& v1,
                               VertexColor3Effect* effect, const Float3& color)
{
	// Create the model-space separating plane.
	Vector2f dir = v1 - v0;
	AVector normal(dir[1], -dir[0], 0.0f);
	normal.Normalize();
	float constant = normal[0]*v0[0] + normal[1]*v0[1];
	HPlane modelPlane(normal, constant);

	// Create the BSP node.
	BspNode* bsp = new0 BspNode(modelPlane);

	VertexFormat* vformat = VertexFormat::Create(2,
	                        VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
	                        VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT3, 0);

	// Create the rectangle representation of the model plane and set the
	// vertex colors to the specified color.
	float xExtent = 0.5f*dir.Length();
	float yExtent = 0.125f;
	TriMesh* rect = StandardMesh(vformat).Rectangle(2, 2, xExtent, yExtent);
	VertexBufferAccessor vba(rect);
	for (int i = 0; i < 4; ++i)
	{
		vba.Color<Float3>(0, i) = color;
	}
	rect->SetEffectInstance(effect->CreateInstance());

	// Set the position and orientation for the world-space plane.
	APoint trn(0.5f*(v0[0] + v1[0]), 0.5f*(v0[1] + v1[1]), yExtent + 0.001f);
	HMatrix zRotate(AVector::UNIT_Z, Mathf::ATan2(dir.Y(),dir.X()));
	HMatrix xRotate(AVector::UNIT_X, Mathf::HALF_PI);
	HMatrix rotate = zRotate*xRotate;
	rect->LocalTransform.SetTranslate(trn);
	rect->LocalTransform.SetRotate(rotate);

	bsp->AttachCoplanarChild(rect);
	return bsp;
}
Ejemplo n.º 13
0
//----------------------------------------------------------------------------
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();
}
Ejemplo n.º 14
0
//----------------------------------------------------------------------------
TriMesh* RoughPlaneSolidBox::CreateGround ()
{
    VertexFormat* vformat = VertexFormat::Create(2,
        VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
        VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT2, 0);

    TriMesh* ground = StandardMesh(vformat).Rectangle(2, 2, 32.0f, 32.0f);

    // Change the texture repeat.
    VertexBufferAccessor vba(ground);
    for (int i = 0; i < vba.GetNumVertices(); ++i)
    {
        Float2& tcoord = vba.TCoord<Float2>(0, i);
        tcoord[0] *= 8.0f;
        tcoord[1] *= 8.0f;
    }

    std::string path = Environment::GetPathR("Gravel.wmtf");
    Texture2D* texture = Texture2D::LoadWMTF(path);
    ground->SetEffectInstance(Texture2DEffect::CreateUniqueInstance(texture,
        Shader::SF_LINEAR, Shader::SC_REPEAT, Shader::SC_REPEAT));

    return ground;
}
Ejemplo n.º 15
0
//----------------------------------------------------------------------------
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;
}
Ejemplo n.º 16
0
//----------------------------------------------------------------------------
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);
}
Ejemplo n.º 17
0
//----------------------------------------------------------------------------
bool NonlocalBlowup::OnInitialize ()
{
    if (!WindowApplication3::OnInitialize())
    {
        return false;
    }
#ifdef RUN_CONSOLE
    RunConsole();
    return false;
#endif

    mScene = new0 Node();
    mScene->LocalTransform.SetRotate(HMatrix(
        0.80475128f, 0.59107417f, -0.054833174f, 0.0f,
        -0.17529237f, 0.32487807f, 0.92936903f, 0.0f,
        0.56714010f, -0.73829913f, 0.36505684f, 0.0f,
        0.0f, 0.0f, 0.0f, 1.0f));
    mWireState = new0 WireState();
    mRenderer->SetOverrideWireState(mWireState);

    VertexFormat* vformat = VertexFormat::Create(2,
        VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
        VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT2, 0);

    TriMesh* mesh = StandardMesh(vformat).Rectangle(256, 256, 16.0f, 16.0f);
    mScene->AttachChild(mesh);

    std::string gridName = Environment::GetPathR("Grid.wmtf");
    Texture2D* gridTexture = Texture2D::LoadWMTF(gridName);
    gridTexture->GenerateMipmaps();

    Texture1D* colorTexture = new0 Texture1D(Texture::TF_A8R8G8B8, 8, 1);
    unsigned char* color = (unsigned char*)colorTexture->GetData(0);
    color[ 0] = 128;  color[ 1] = 128;  color[ 2] = 128;  color[ 3] = 255;
    color[ 4] = 255;  color[ 5] =   0;  color[ 6] = 128;  color[ 7] = 255;
    color[ 8] = 255;  color[ 9] =   0;  color[10] =   0;  color[11] = 255;
    color[12] =   0;  color[13] = 255;  color[14] =   0;  color[15] = 255;
    color[16] =   0;  color[17] = 255;  color[18] = 255;  color[19] = 255;
    color[20] =   0;  color[21] = 128;  color[22] = 255;  color[23] = 255;
    color[24] =   0;  color[25] =   0;  color[26] = 255;  color[27] = 255;
    color[28] = 255;  color[29] = 255;  color[30] = 255;  color[31] = 255;

    float dt = 0.01f, dx = 1.0f, dy = 1.0f;
    // Uncomment only one of these at a time.
    NonconvexDomain0p50(dt, dx, dy);
    //SquareSymmetric0p01(dt, dx, dy);
    //SquareSymmetric0p50(dt, dx, dy);
    //SquareSymmetric0p99(dt, dx, dy);
    //SquareGaussX0p50(dt, dx, dy);
    //SquareGaussXY0p50(dt, dx, dy);
    //SquareGaussFour0p50(dt, dx, dy);

    DisplacementEffect* effect = new0 DisplacementEffect();
    mesh->SetEffectInstance(effect->CreateInstance(mHeightTexture,
        gridTexture, colorTexture, mDomainTexture));

    // Set up the camera so that it looks at the graph from slightly above
    // the xy-plane and at a skewed angle/direction of view.
    mCamera->SetFrustum(60.0f, GetAspectRatio(), 1.0f, 10000.0f);
    APoint camPosition(0.0f, 3.46f, 42.97f);
    AVector camDVector(0.0f, 0.0f, -1.0f);
    AVector camUVector(0.0f, 1.0f, 0.0f);
    AVector camRVector = camDVector.Cross(camUVector);
    mCamera->SetFrame(camPosition, camDVector, camUVector, camRVector);

    // Initial update of objects.
    mScene->Update();

    // Initial culling of scene.
    mCuller.SetCamera(mCamera);
    mCuller.ComputeVisibleSet(mScene);

    InitializeCameraMotion(0.01f, 0.01f);
    InitializeObjectMotion(mScene);
    return true;
}
Ejemplo n.º 18
0
//----------------------------------------------------------------------------
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
}
//----------------------------------------------------------------------------
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();
}
Ejemplo n.º 20
0
//----------------------------------------------------------------------------
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;
}