Refactoring example code.
This commit is contained in:
David Williams
parent
3f849e19a4
commit
565aa21799
@ -72,27 +72,26 @@ public:
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BasicExample(QWidget *parent)
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:OpenGLWidget(parent)
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{
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}
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protected:
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void initialize() override
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{
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//Create an empty volume and then place a sphere in it
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PagedVolume<uint8_t> volData(PolyVox::Region(Vector3DInt32(0, 0, 0), Vector3DInt32(63, 63, 63)));
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createSphereInVolume(volData, 30);
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//Create an empty volume and then place a sphere in it
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PagedVolume<uint8_t> volData(PolyVox::Region(Vector3DInt32(0, 0, 0), Vector3DInt32(63, 63, 63)));
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createSphereInVolume(volData, 30);
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// Extract the surface for the specified region of the volume. Uncomment the line for the kind of surface extraction you want to see.
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auto mesh = extractCubicMesh(&volData, volData.getEnclosingRegion());
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//auto mesh = extractMarchingCubesMesh(&volData, volData.getEnclosingRegion());
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// Extract the surface for the specified region of the volume. Uncomment the line for the kind of surface extraction you want to see.
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auto mesh = extractCubicMesh(&volData, volData.getEnclosingRegion());
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//auto mesh = extractMarchingCubesMesh(&volData, volData.getEnclosingRegion());
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// The surface extractor outputs the mesh in an efficient compressed format which is not directly suitable for rendering. The easiest approach is to
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// decode this on the CPU as shown below, though more advanced applications can upload the compressed mesh to the GPU and decompress in shader code.
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auto decodedMesh = decodeMesh(mesh);
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// The surface extractor outputs the mesh in an efficient compressed format which is not directly suitable for rendering. The easiest approach is to
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// decode this on the CPU as shown below, though more advanced applications can upload the compressed mesh to the GPU and decompress in shader code.
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auto decodedMesh = decodeMesh(mesh);
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//Pass the surface to the OpenGL window
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//Pass the surface to the OpenGL window
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addMesh(decodedMesh);
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//openGLWidget.addMesh(mesh2);
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//openGLWidget.addMesh(mesh2);
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setViewableRegion(volData.getEnclosingRegion());
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}
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};
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@ -72,7 +72,6 @@ public:
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DecodeOnGPUExample(QWidget *parent)
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:OpenGLWidget(parent)
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{
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}
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protected:
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@ -114,60 +113,60 @@ protected:
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}
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private:
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OpenGLMeshData buildOpenGLMeshData(const PolyVox::Mesh< PolyVox::MarchingCubesVertex< uint8_t > >& surfaceMesh, const PolyVox::Vector3DInt32& translation = PolyVox::Vector3DInt32(0, 0, 0), float scale = 1.0f)
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{
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// Convienient access to the vertices and indices
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const auto& vecIndices = surfaceMesh.getIndices();
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const auto& vecVertices = surfaceMesh.getVertices();
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OpenGLMeshData buildOpenGLMeshData(const PolyVox::Mesh< PolyVox::MarchingCubesVertex< uint8_t > >& surfaceMesh, const PolyVox::Vector3DInt32& translation = PolyVox::Vector3DInt32(0, 0, 0), float scale = 1.0f)
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{
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// Convienient access to the vertices and indices
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const auto& vecIndices = surfaceMesh.getIndices();
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const auto& vecVertices = surfaceMesh.getVertices();
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// This struct holds the OpenGL properties (buffer handles, etc) which will be used
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// to render our mesh. We copy the data from the PolyVox mesh into this structure.
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OpenGLMeshData meshData;
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// This struct holds the OpenGL properties (buffer handles, etc) which will be used
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// to render our mesh. We copy the data from the PolyVox mesh into this structure.
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OpenGLMeshData meshData;
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// Create the VAO for the mesh
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glGenVertexArrays(1, &(meshData.vertexArrayObject));
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glBindVertexArray(meshData.vertexArrayObject);
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// Create the VAO for the mesh
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glGenVertexArrays(1, &(meshData.vertexArrayObject));
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glBindVertexArray(meshData.vertexArrayObject);
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// The GL_ARRAY_BUFFER will contain the list of vertex positions
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glGenBuffers(1, &(meshData.vertexBuffer));
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glBindBuffer(GL_ARRAY_BUFFER, meshData.vertexBuffer);
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glBufferData(GL_ARRAY_BUFFER, vecVertices.size() * sizeof(MarchingCubesVertex< uint8_t >), vecVertices.data(), GL_STATIC_DRAW);
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// The GL_ARRAY_BUFFER will contain the list of vertex positions
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glGenBuffers(1, &(meshData.vertexBuffer));
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glBindBuffer(GL_ARRAY_BUFFER, meshData.vertexBuffer);
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glBufferData(GL_ARRAY_BUFFER, vecVertices.size() * sizeof(MarchingCubesVertex< uint8_t >), vecVertices.data(), GL_STATIC_DRAW);
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// and GL_ELEMENT_ARRAY_BUFFER will contain the indices
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glGenBuffers(1, &(meshData.indexBuffer));
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, meshData.indexBuffer);
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glBufferData(GL_ELEMENT_ARRAY_BUFFER, vecIndices.size() * sizeof(uint32_t), vecIndices.data(), GL_STATIC_DRAW);
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// and GL_ELEMENT_ARRAY_BUFFER will contain the indices
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glGenBuffers(1, &(meshData.indexBuffer));
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, meshData.indexBuffer);
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glBufferData(GL_ELEMENT_ARRAY_BUFFER, vecIndices.size() * sizeof(uint32_t), vecIndices.data(), GL_STATIC_DRAW);
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// Every surface extractor outputs valid positions for the vertices, so tell OpenGL how these are laid out
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glEnableVertexAttribArray(0); // Attrib '0' is the vertex positions
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glVertexAttribIPointer(0, 3, GL_UNSIGNED_SHORT, sizeof(MarchingCubesVertex< uint8_t >), (GLvoid*)(offsetof(MarchingCubesVertex< uint8_t >, encodedPosition))); //take the first 3 floats from every sizeof(decltype(vecVertices)::value_type)
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// Every surface extractor outputs valid positions for the vertices, so tell OpenGL how these are laid out
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glEnableVertexAttribArray(0); // Attrib '0' is the vertex positions
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glVertexAttribIPointer(0, 3, GL_UNSIGNED_SHORT, sizeof(MarchingCubesVertex< uint8_t >), (GLvoid*)(offsetof(MarchingCubesVertex< uint8_t >, encodedPosition))); //take the first 3 floats from every sizeof(decltype(vecVertices)::value_type)
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// Some surface extractors also generate normals, so tell OpenGL how these are laid out. If a surface extractor
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// does not generate normals then nonsense values are written into the buffer here and sghould be ignored by the
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// shader. This is mostly just to simplify this example code - in a real application you will know whether your
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// chosen surface extractor generates normals and can skip uploading them if not.
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glEnableVertexAttribArray(1); // Attrib '1' is the vertex normals.
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glVertexAttribIPointer(1, 1, GL_UNSIGNED_SHORT, sizeof(MarchingCubesVertex< uint8_t >), (GLvoid*)(offsetof(MarchingCubesVertex< uint8_t >, encodedNormal)));
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// Some surface extractors also generate normals, so tell OpenGL how these are laid out. If a surface extractor
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// does not generate normals then nonsense values are written into the buffer here and sghould be ignored by the
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// shader. This is mostly just to simplify this example code - in a real application you will know whether your
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// chosen surface extractor generates normals and can skip uploading them if not.
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glEnableVertexAttribArray(1); // Attrib '1' is the vertex normals.
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glVertexAttribIPointer(1, 1, GL_UNSIGNED_SHORT, sizeof(MarchingCubesVertex< uint8_t >), (GLvoid*)(offsetof(MarchingCubesVertex< uint8_t >, encodedNormal)));
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// Finally a surface extractor will probably output additional data. This is highly application dependant. For this example code
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// we're just uploading it as a set of bytes which we can read individually, but real code will want to do something specialised here.
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glEnableVertexAttribArray(2); //We're talking about shader attribute '2'
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GLint size = (std::min)(sizeof(uint8_t), size_t(4)); // Can't upload more that 4 components (vec4 is GLSL's biggest type)
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glVertexAttribIPointer(2, size, GL_UNSIGNED_BYTE, sizeof(MarchingCubesVertex< uint8_t >), (GLvoid*)(offsetof(MarchingCubesVertex< uint8_t >, data)));
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// Finally a surface extractor will probably output additional data. This is highly application dependant. For this example code
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// we're just uploading it as a set of bytes which we can read individually, but real code will want to do something specialised here.
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glEnableVertexAttribArray(2); //We're talking about shader attribute '2'
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GLint size = (std::min)(sizeof(uint8_t), size_t(4)); // Can't upload more that 4 components (vec4 is GLSL's biggest type)
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glVertexAttribIPointer(2, size, GL_UNSIGNED_BYTE, sizeof(MarchingCubesVertex< uint8_t >), (GLvoid*)(offsetof(MarchingCubesVertex< uint8_t >, data)));
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// We're done uploading and can now unbind.
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glBindVertexArray(0);
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// We're done uploading and can now unbind.
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glBindVertexArray(0);
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// A few additional properties can be copied across for use during rendering.
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meshData.noOfIndices = vecIndices.size();
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meshData.translation = QVector3D(translation.getX(), translation.getY(), translation.getZ());
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meshData.scale = scale;
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// A few additional properties can be copied across for use during rendering.
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meshData.noOfIndices = vecIndices.size();
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meshData.translation = QVector3D(translation.getX(), translation.getY(), translation.getZ());
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meshData.scale = scale;
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// Set 16 or 32-bit index buffer size.
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meshData.indexType = sizeof(PolyVox::Mesh< PolyVox::MarchingCubesVertex< uint8_t > >::IndexType) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT;
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// Set 16 or 32-bit index buffer size.
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meshData.indexType = sizeof(PolyVox::Mesh< PolyVox::MarchingCubesVertex< uint8_t > >::IndexType) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT;
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return meshData;
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}
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return meshData;
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}
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};
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int main(int argc, char *argv[])
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@ -47,100 +47,110 @@ using namespace std;
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const int32_t g_uVolumeSideLength = 128;
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int main(int argc, char *argv[])
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class OpenGLExample : public OpenGLWidget
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{
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FilePager<MaterialDensityPair88>* pager = new FilePager<MaterialDensityPair88>(".");
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PagedVolume<MaterialDensityPair88> volData(PolyVox::Region(Vector3DInt32(0, 0, 0), Vector3DInt32(g_uVolumeSideLength - 1, g_uVolumeSideLength - 1, g_uVolumeSideLength - 1)), pager);
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//Make our volume contain a sphere in the center.
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int32_t minPos = 0;
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int32_t midPos = g_uVolumeSideLength / 2;
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int32_t maxPos = g_uVolumeSideLength - 1;
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cout << "Creating sphere 1" << std::endl;
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createSphereInVolume(volData, 60.0f, 5);
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cout << "Creating sphere 2" << std::endl;
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createSphereInVolume(volData, 50.0f, 4);
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cout << "Creating sphere 3" << std::endl;
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createSphereInVolume(volData, 40.0f, 3);
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cout << "Creating sphere 4" << std::endl;
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createSphereInVolume(volData, 30.0f, 2);
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cout << "Creating sphere 5" << std::endl;
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createSphereInVolume(volData, 20.0f, 1);
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cout << "Creating cubes" << std::endl;
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createCubeInVolume(volData, Vector3DInt32(minPos, minPos, minPos), Vector3DInt32(midPos-1, midPos-1, midPos-1), 0);
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createCubeInVolume(volData, Vector3DInt32(midPos+1, midPos+1, minPos), Vector3DInt32(maxPos, maxPos, midPos-1), 0);
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createCubeInVolume(volData, Vector3DInt32(midPos+1, minPos, midPos+1), Vector3DInt32(maxPos, midPos-1, maxPos), 0);
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createCubeInVolume(volData, Vector3DInt32(minPos, midPos+1, midPos+1), Vector3DInt32(midPos-1, maxPos, maxPos), 0);
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createCubeInVolume(volData, Vector3DInt32(1, midPos-10, midPos-10), Vector3DInt32(maxPos-1, midPos+10, midPos+10), MaterialDensityPair44::getMaxDensity());
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createCubeInVolume(volData, Vector3DInt32(midPos-10, 1, midPos-10), Vector3DInt32(midPos+10, maxPos-1, midPos+10), MaterialDensityPair44::getMaxDensity());
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createCubeInVolume(volData, Vector3DInt32(midPos-10, midPos-10 ,1), Vector3DInt32(midPos+10, midPos+10, maxPos-1), MaterialDensityPair44::getMaxDensity());
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QApplication app(argc, argv);
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OpenGLWidget openGLWidget(0);
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openGLWidget.show();
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QSharedPointer<QGLShaderProgram> shader(new QGLShaderProgram);
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if (!shader->addShaderFromSourceFile(QGLShader::Vertex, ":/openglexample.vert"))
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public:
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OpenGLExample(QWidget *parent)
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:OpenGLWidget(parent)
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{
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std::cerr << shader->log().toStdString() << std::endl;
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exit(EXIT_FAILURE);
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}
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if (!shader->addShaderFromSourceFile(QGLShader::Fragment, ":/openglexample.frag"))
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protected:
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void initialize() override
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{
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std::cerr << shader->log().toStdString() << std::endl;
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exit(EXIT_FAILURE);
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}
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FilePager<MaterialDensityPair88>* pager = new FilePager<MaterialDensityPair88>(".");
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PagedVolume<MaterialDensityPair88> volData(PolyVox::Region(Vector3DInt32(0, 0, 0), Vector3DInt32(g_uVolumeSideLength - 1, g_uVolumeSideLength - 1, g_uVolumeSideLength - 1)), pager);
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openGLWidget.setShader(shader);
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//Make our volume contain a sphere in the center.
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int32_t minPos = 0;
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int32_t midPos = g_uVolumeSideLength / 2;
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int32_t maxPos = g_uVolumeSideLength - 1;
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QTime time;
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time.start();
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//openGLWidget.setVolume(&volData);
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cout << endl << "Time taken = " << time.elapsed() / 1000.0f << "s" << endl << endl;
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cout << "Creating sphere 1" << std::endl;
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createSphereInVolume(volData, 60.0f, 5);
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cout << "Creating sphere 2" << std::endl;
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createSphereInVolume(volData, 50.0f, 4);
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cout << "Creating sphere 3" << std::endl;
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createSphereInVolume(volData, 40.0f, 3);
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cout << "Creating sphere 4" << std::endl;
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createSphereInVolume(volData, 30.0f, 2);
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cout << "Creating sphere 5" << std::endl;
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createSphereInVolume(volData, 20.0f, 1);
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const int32_t extractedRegionSize = 32;
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int meshCounter = 0;
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cout << "Creating cubes" << std::endl;
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createCubeInVolume(volData, Vector3DInt32(minPos, minPos, minPos), Vector3DInt32(midPos - 1, midPos - 1, midPos - 1), 0);
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createCubeInVolume(volData, Vector3DInt32(midPos + 1, midPos + 1, minPos), Vector3DInt32(maxPos, maxPos, midPos - 1), 0);
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createCubeInVolume(volData, Vector3DInt32(midPos + 1, minPos, midPos + 1), Vector3DInt32(maxPos, midPos - 1, maxPos), 0);
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createCubeInVolume(volData, Vector3DInt32(minPos, midPos + 1, midPos + 1), Vector3DInt32(midPos - 1, maxPos, maxPos), 0);
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for (int32_t z = 0; z < volData.getDepth(); z += extractedRegionSize)
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{
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for (int32_t y = 0; y < volData.getHeight(); y += extractedRegionSize)
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createCubeInVolume(volData, Vector3DInt32(1, midPos - 10, midPos - 10), Vector3DInt32(maxPos - 1, midPos + 10, midPos + 10), MaterialDensityPair44::getMaxDensity());
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createCubeInVolume(volData, Vector3DInt32(midPos - 10, 1, midPos - 10), Vector3DInt32(midPos + 10, maxPos - 1, midPos + 10), MaterialDensityPair44::getMaxDensity());
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createCubeInVolume(volData, Vector3DInt32(midPos - 10, midPos - 10, 1), Vector3DInt32(midPos + 10, midPos + 10, maxPos - 1), MaterialDensityPair44::getMaxDensity());
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QSharedPointer<QGLShaderProgram> shader(new QGLShaderProgram);
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if (!shader->addShaderFromSourceFile(QGLShader::Vertex, ":/openglexample.vert"))
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{
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for (int32_t x = 0; x < volData.getWidth(); x += extractedRegionSize)
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std::cerr << shader->log().toStdString() << std::endl;
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exit(EXIT_FAILURE);
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}
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if (!shader->addShaderFromSourceFile(QGLShader::Fragment, ":/openglexample.frag"))
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{
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std::cerr << shader->log().toStdString() << std::endl;
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exit(EXIT_FAILURE);
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}
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setShader(shader);
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QTime time;
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time.start();
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//openGLWidget.setVolume(&volData);
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cout << endl << "Time taken = " << time.elapsed() / 1000.0f << "s" << endl << endl;
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const int32_t extractedRegionSize = 32;
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int meshCounter = 0;
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for (int32_t z = 0; z < volData.getDepth(); z += extractedRegionSize)
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{
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for (int32_t y = 0; y < volData.getHeight(); y += extractedRegionSize)
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{
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// Specify the region to extract based on a starting position and the desired region sze.
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PolyVox::Region regToExtract(x, y, z, x + extractedRegionSize, y + extractedRegionSize, z + extractedRegionSize);
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for (int32_t x = 0; x < volData.getWidth(); x += extractedRegionSize)
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{
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// Specify the region to extract based on a starting position and the desired region sze.
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PolyVox::Region regToExtract(x, y, z, x + extractedRegionSize, y + extractedRegionSize, z + extractedRegionSize);
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// If you uncomment this line you will be able to see that the volume is rendered as multiple seperate meshes.
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//regToExtract.shrink(1);
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// If you uncomment this line you will be able to see that the volume is rendered as multiple seperate meshes.
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//regToExtract.shrink(1);
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// Perform the extraction for this region of the volume
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auto mesh = extractMarchingCubesMesh(&volData, regToExtract);
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// Perform the extraction for this region of the volume
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auto mesh = extractMarchingCubesMesh(&volData, regToExtract);
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// The returned mesh needs to be decoded to be appropriate for GPU rendering.
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auto decodedMesh = decodeMesh(mesh);
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// The returned mesh needs to be decoded to be appropriate for GPU rendering.
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auto decodedMesh = decodeMesh(mesh);
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// Pass the surface to the OpenGL window. Note that we are also passing an offset in this multi-mesh example. This is because
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// the surface extractors return a mesh with 'local space' positions to reduce storage requirements and precision problems.
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openGLWidget.addMesh(decodedMesh, decodedMesh.getOffset());
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// Pass the surface to the OpenGL window. Note that we are also passing an offset in this multi-mesh example. This is because
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// the surface extractors return a mesh with 'local space' positions to reduce storage requirements and precision problems.
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addMesh(decodedMesh, decodedMesh.getOffset());
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meshCounter++;
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meshCounter++;
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}
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}
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}
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cout << "Rendering volume as " << meshCounter << " seperate meshes" << endl;
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setViewableRegion(volData.getEnclosingRegion());
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}
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};
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cout << "Rendering volume as " << meshCounter << " seperate meshes" << endl;
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openGLWidget.setViewableRegion(volData.getEnclosingRegion());
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int main(int argc, char *argv[])
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{
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//Create and show the Qt OpenGL window
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QApplication app(argc, argv);
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OpenGLExample openGLWidget(0);
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openGLWidget.show();
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//Run the message pump.
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return app.exec();
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}
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}
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@ -139,48 +139,61 @@ public:
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}
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};
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class PagingExample : public OpenGLWidget
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{
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public:
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PagingExample(QWidget *parent)
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:OpenGLWidget(parent)
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{
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}
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protected:
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void initialize() override
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{
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PerlinNoisePager* pager = new PerlinNoisePager();
|
||||
PagedVolume<MaterialDensityPair44> volData(PolyVox::Region::MaxRegion(), pager, 64);
|
||||
volData.setMemoryUsageLimit(8 * 1024 * 1024); // 8Mb
|
||||
|
||||
//createSphereInVolume(volData, 30);
|
||||
//createPerlinTerrain(volData);
|
||||
//createPerlinVolumeSlow(volData);
|
||||
std::cout << "Memory usage: " << (volData.calculateSizeInBytes() / 1024.0 / 1024.0) << "MB" << std::endl;
|
||||
//std::cout << "Compression ratio: 1 to " << (1.0/(volData.calculateCompressionRatio())) << std::endl;
|
||||
PolyVox::Region reg(Vector3DInt32(-255, 0, 0), Vector3DInt32(255, 255, 255));
|
||||
std::cout << "Prefetching region: " << reg.getLowerCorner() << " -> " << reg.getUpperCorner() << std::endl;
|
||||
volData.prefetch(reg);
|
||||
std::cout << "Memory usage: " << (volData.calculateSizeInBytes() / 1024.0 / 1024.0) << "MB" << std::endl;
|
||||
//std::cout << "Compression ratio: 1 to " << (1.0/(volData.calculateCompressionRatio())) << std::endl;
|
||||
PolyVox::Region reg2(Vector3DInt32(0, 0, 0), Vector3DInt32(255, 255, 255));
|
||||
std::cout << "Flushing region: " << reg2.getLowerCorner() << " -> " << reg2.getUpperCorner() << std::endl;
|
||||
volData.flush(reg2);
|
||||
std::cout << "Memory usage: " << (volData.calculateSizeInBytes() / 1024.0 / 1024.0) << "MB" << std::endl;
|
||||
//std::cout << "Compression ratio: 1 to " << (1.0/(volData.calculateCompressionRatio())) << std::endl;
|
||||
std::cout << "Flushing entire volume" << std::endl;
|
||||
volData.flushAll();
|
||||
std::cout << "Memory usage: " << (volData.calculateSizeInBytes() / 1024.0 / 1024.0) << "MB" << std::endl;
|
||||
//std::cout << "Compression ratio: 1 to " << (1.0/(volData.calculateCompressionRatio())) << std::endl;
|
||||
|
||||
//Extract the surface
|
||||
auto mesh = extractCubicMesh(&volData, reg2);
|
||||
std::cout << "#vertices: " << mesh.getNoOfVertices() << std::endl;
|
||||
|
||||
auto decodedMesh = decodeMesh(mesh);
|
||||
|
||||
//Pass the surface to the OpenGL window
|
||||
addMesh(decodedMesh);
|
||||
|
||||
setViewableRegion(reg2);
|
||||
}
|
||||
};
|
||||
|
||||
int main(int argc, char *argv[])
|
||||
{
|
||||
//Create and show the Qt OpenGL window
|
||||
QApplication app(argc, argv);
|
||||
OpenGLWidget openGLWidget(0);
|
||||
PagingExample openGLWidget(0);
|
||||
openGLWidget.show();
|
||||
|
||||
PerlinNoisePager* pager = new PerlinNoisePager();
|
||||
PagedVolume<MaterialDensityPair44> volData(PolyVox::Region::MaxRegion(), pager, 64);
|
||||
volData.setMemoryUsageLimit(8 * 1024 * 1024); // 8Mb
|
||||
|
||||
//createSphereInVolume(volData, 30);
|
||||
//createPerlinTerrain(volData);
|
||||
//createPerlinVolumeSlow(volData);
|
||||
std::cout << "Memory usage: " << (volData.calculateSizeInBytes()/1024.0/1024.0) << "MB" << std::endl;
|
||||
//std::cout << "Compression ratio: 1 to " << (1.0/(volData.calculateCompressionRatio())) << std::endl;
|
||||
PolyVox::Region reg(Vector3DInt32(-255,0,0), Vector3DInt32(255,255,255));
|
||||
std::cout << "Prefetching region: " << reg.getLowerCorner() << " -> " << reg.getUpperCorner() << std::endl;
|
||||
volData.prefetch(reg);
|
||||
std::cout << "Memory usage: " << (volData.calculateSizeInBytes()/1024.0/1024.0) << "MB" << std::endl;
|
||||
//std::cout << "Compression ratio: 1 to " << (1.0/(volData.calculateCompressionRatio())) << std::endl;
|
||||
PolyVox::Region reg2(Vector3DInt32(0,0,0), Vector3DInt32(255,255,255));
|
||||
std::cout << "Flushing region: " << reg2.getLowerCorner() << " -> " << reg2.getUpperCorner() << std::endl;
|
||||
volData.flush(reg2);
|
||||
std::cout << "Memory usage: " << (volData.calculateSizeInBytes()/1024.0/1024.0) << "MB" << std::endl;
|
||||
//std::cout << "Compression ratio: 1 to " << (1.0/(volData.calculateCompressionRatio())) << std::endl;
|
||||
std::cout << "Flushing entire volume" << std::endl;
|
||||
volData.flushAll();
|
||||
std::cout << "Memory usage: " << (volData.calculateSizeInBytes()/1024.0/1024.0) << "MB" << std::endl;
|
||||
//std::cout << "Compression ratio: 1 to " << (1.0/(volData.calculateCompressionRatio())) << std::endl;
|
||||
|
||||
//Extract the surface
|
||||
auto mesh = extractCubicMesh(&volData, reg2);
|
||||
std::cout << "#vertices: " << mesh.getNoOfVertices() << std::endl;
|
||||
|
||||
auto decodedMesh = decodeMesh(mesh);
|
||||
|
||||
//Pass the surface to the OpenGL window
|
||||
openGLWidget.addMesh(decodedMesh);
|
||||
|
||||
openGLWidget.setViewableRegion(reg2);
|
||||
|
||||
//Run the message pump.
|
||||
return app.exec();
|
||||
}
|
||||
|
||||
@ -68,43 +68,56 @@ void createSphereInVolume(PagedVolume<uint8_t>& volData, float fRadius)
|
||||
}
|
||||
}
|
||||
|
||||
class SmoothLODExample : public OpenGLWidget
|
||||
{
|
||||
public:
|
||||
SmoothLODExample(QWidget *parent)
|
||||
:OpenGLWidget(parent)
|
||||
{
|
||||
}
|
||||
|
||||
protected:
|
||||
void initialize() override
|
||||
{
|
||||
//Create an empty volume and then place a sphere in it
|
||||
PagedVolume<uint8_t> volData(PolyVox::Region(Vector3DInt32(0, 0, 0), Vector3DInt32(63, 63, 63)));
|
||||
createSphereInVolume(volData, 28);
|
||||
|
||||
//Smooth the data - should reimplement this using LowPassFilter
|
||||
//smoothRegion<PagedVolume, Density8>(volData, volData.getEnclosingRegion());
|
||||
//smoothRegion<PagedVolume, Density8>(volData, volData.getEnclosingRegion());
|
||||
//smoothRegion<PagedVolume, Density8>(volData, volData.getEnclosingRegion());
|
||||
|
||||
RawVolume<uint8_t> volDataLowLOD(PolyVox::Region(Vector3DInt32(0, 0, 0), Vector3DInt32(15, 31, 31)));
|
||||
|
||||
VolumeResampler< PagedVolume<uint8_t>, RawVolume<uint8_t> > volumeResampler(&volData, PolyVox::Region(Vector3DInt32(0, 0, 0), Vector3DInt32(31, 63, 63)), &volDataLowLOD, volDataLowLOD.getEnclosingRegion());
|
||||
volumeResampler.execute();
|
||||
|
||||
//Extract the surface
|
||||
auto meshLowLOD = extractMarchingCubesMesh(&volDataLowLOD, volDataLowLOD.getEnclosingRegion());
|
||||
// The returned mesh needs to be decoded to be appropriate for GPU rendering.
|
||||
auto decodedMeshLowLOD = decodeMesh(meshLowLOD);
|
||||
|
||||
//Extract the surface
|
||||
auto meshHighLOD = extractMarchingCubesMesh(&volData, PolyVox::Region(Vector3DInt32(30, 0, 0), Vector3DInt32(63, 63, 63)));
|
||||
// The returned mesh needs to be decoded to be appropriate for GPU rendering.
|
||||
auto decodedMeshHighLOD = decodeMesh(meshHighLOD);
|
||||
|
||||
//Pass the surface to the OpenGL window
|
||||
addMesh(decodedMeshHighLOD, Vector3DInt32(30, 0, 0));
|
||||
addMesh(decodedMeshLowLOD, Vector3DInt32(0, 0, 0), 63.0f / 31.0f);
|
||||
|
||||
setViewableRegion(volData.getEnclosingRegion());
|
||||
}
|
||||
};
|
||||
|
||||
int main(int argc, char *argv[])
|
||||
{
|
||||
//Create and show the Qt OpenGL window
|
||||
QApplication app(argc, argv);
|
||||
OpenGLWidget openGLWidget(0);
|
||||
SmoothLODExample openGLWidget(0);
|
||||
openGLWidget.show();
|
||||
|
||||
//Create an empty volume and then place a sphere in it
|
||||
PagedVolume<uint8_t> volData(PolyVox::Region(Vector3DInt32(0, 0, 0), Vector3DInt32(63, 63, 63)));
|
||||
createSphereInVolume(volData, 28);
|
||||
|
||||
//Smooth the data - should reimplement this using LowPassFilter
|
||||
//smoothRegion<PagedVolume, Density8>(volData, volData.getEnclosingRegion());
|
||||
//smoothRegion<PagedVolume, Density8>(volData, volData.getEnclosingRegion());
|
||||
//smoothRegion<PagedVolume, Density8>(volData, volData.getEnclosingRegion());
|
||||
|
||||
RawVolume<uint8_t> volDataLowLOD(PolyVox::Region(Vector3DInt32(0,0,0), Vector3DInt32(15, 31, 31)));
|
||||
|
||||
VolumeResampler< PagedVolume<uint8_t>, RawVolume<uint8_t> > volumeResampler(&volData, PolyVox::Region(Vector3DInt32(0, 0, 0), Vector3DInt32(31, 63, 63)), &volDataLowLOD, volDataLowLOD.getEnclosingRegion());
|
||||
volumeResampler.execute();
|
||||
|
||||
//Extract the surface
|
||||
auto meshLowLOD = extractMarchingCubesMesh(&volDataLowLOD, volDataLowLOD.getEnclosingRegion());
|
||||
// The returned mesh needs to be decoded to be appropriate for GPU rendering.
|
||||
auto decodedMeshLowLOD = decodeMesh(meshLowLOD);
|
||||
|
||||
//Extract the surface
|
||||
auto meshHighLOD = extractMarchingCubesMesh(&volData, PolyVox::Region(Vector3DInt32(30, 0, 0), Vector3DInt32(63, 63, 63)));
|
||||
// The returned mesh needs to be decoded to be appropriate for GPU rendering.
|
||||
auto decodedMeshHighLOD = decodeMesh(meshHighLOD);
|
||||
|
||||
//Pass the surface to the OpenGL window
|
||||
openGLWidget.addMesh(decodedMeshHighLOD, Vector3DInt32(30, 0, 0));
|
||||
openGLWidget.addMesh(decodedMeshLowLOD, Vector3DInt32(0, 0, 0), 63.0f / 31.0f);
|
||||
|
||||
openGLWidget.setViewableRegion(volData.getEnclosingRegion());
|
||||
|
||||
//Run the message pump.
|
||||
return app.exec();
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user