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pull out common parts of the two sphere-in-volumes

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This commit is contained in:
Seth Alves 2015-05-21 18:07:46 -07:00
parent 8b2d570f3f
commit a882fc7fb1
2 changed files with 15 additions and 40 deletions
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51
libraries/entities-renderer/src/RenderablePolyVoxEntityItem.cpp
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@ -50,7 +50,8 @@ void RenderablePolyVoxEntityItem::setVoxelVolumeSize(glm::vec3 voxelVolumeSize)
_volData = new PolyVox::SimpleVolume<uint8_t>(PolyVox::Region(lowCorner, highCorner));
}
void RenderablePolyVoxEntityItem::createSphereInVolume(glm::vec3 center, float radius) {
void RenderablePolyVoxEntityItem::setSphereInVolume(glm::vec3 center, float radius, uint8_t toValue) {
// This three-level for loop iterates over every voxel in the volume
for (int z = 0; z < _volData->getDepth(); z++) {
for (int y = 0; y < _volData->getHeight(); y++) {
@ -63,7 +64,7 @@ void RenderablePolyVoxEntityItem::createSphereInVolume(glm::vec3 center, float r
// If the current voxel is less than 'radius' units from the center then we make it solid.
if (fDistToCenter <= radius) {
// Our new voxel value
uVoxelValue = 255;
uVoxelValue = toValue;
}
// Wrte the voxel value into the volume
@ -73,28 +74,13 @@ void RenderablePolyVoxEntityItem::createSphereInVolume(glm::vec3 center, float r
}
}
void RenderablePolyVoxEntityItem::createSphereInVolume(glm::vec3 center, float radius) {
setSphereInVolume(center, radius, 255);
}
void RenderablePolyVoxEntityItem::clearSphereInVolume(glm::vec3 center, float radius) {
// This three-level for loop iterates over every voxel in the volume
for (int z = 0; z < _volData->getDepth(); z++) {
for (int y = 0; y < _volData->getHeight(); y++) {
for (int x = 0; x < _volData->getWidth(); x++) {
// Store our current position as a vector...
glm::vec3 pos(x, y, z);
// And compute how far the current position is from the center of the volume
float fDistToCenter = glm::distance(pos, center);
uint8_t uVoxelValue = _volData->getVoxelAt(x, y, z);
// If the current voxel is less than 'radius' units from the center then we make it solid.
if (fDistToCenter <= radius) {
// Our new voxel value
uVoxelValue = 0;
}
// Wrte the voxel value into the volume
_volData->setVoxelAt(x, y, z, uVoxelValue);
}
}
}
void RenderablePolyVoxEntityItem::eraseSphereInVolume(glm::vec3 center, float radius) {
setSphereInVolume(center, radius, 0);
}
void RenderablePolyVoxEntityItem::getModel() {
@ -108,34 +94,21 @@ void RenderablePolyVoxEntityItem::getModel() {
_volData->getWidth() / 2.0f);
createSphereInVolume(center, 15);
createSphereInVolume(center + glm::vec3(8.0f, 0.0f, 0.0f), 15);
clearSphereInVolume(center + glm::vec3(4.0f, 0.0f, 4.0f), 15);
eraseSphereInVolume(center + glm::vec3(4.0f, 0.0f, 4.0f), 15);
// A mesh object to hold the result of surface extraction
PolyVox::SurfaceMesh<PolyVox::PositionMaterialNormal> polyVoxMesh;
//Create a surface extractor. Comment out one of the following two lines to decide which type gets created.
PolyVox::CubicSurfaceExtractorWithNormals<PolyVox::SimpleVolume<uint8_t>> surfaceExtractor
// PolyVox::CubicSurfaceExtractorWithNormals<PolyVox::SimpleVolume<uint8_t>> surfaceExtractor
// (_volData, _volData->getEnclosingRegion(), &polyVoxMesh);
PolyVox::MarchingCubesSurfaceExtractor<PolyVox::SimpleVolume<uint8_t>> surfaceExtractor
(_volData, _volData->getEnclosingRegion(), &polyVoxMesh);
// MarchingCubesSurfaceExtractor<SimpleVolume<uint8_t>> surfaceExtractor(_volData,
// _volData->getEnclosingRegion(),
// &polyVoxMesh);
//Execute the surface extractor.
surfaceExtractor.execute();
// find dimensions
// AABox box;
// const std::vector<PolyVox::PositionMaterialNormal>& vertices = polyVoxMesh.getVertices();
// foreach (const PolyVox::PositionMaterialNormal vertexMaterialNormal, vertices) {
// const PolyVox::Vector3DFloat& vertex = vertexMaterialNormal.position;
// glm::vec3 v(vertex.getX(), vertex.getY(), vertex.getZ());
// box += v;
// }
// glm::vec3 dimensions = box.getDimensions();
// setDimensions(dimensions);
// convert PolyVox mesh to a Sam mesh
model::Mesh* mesh = new model::Mesh();
model::MeshPointer meshPtr(mesh);

4
libraries/entities-renderer/src/RenderablePolyVoxEntityItem.h
View file

@ -31,8 +31,10 @@ public:
void getModel();
virtual void setVoxelVolumeSize(glm::vec3 voxelVolumeSize);
void setSphereInVolume(glm::vec3 center, float radius, uint8_t toValue);
void createSphereInVolume(glm::vec3 center, float radius);
void clearSphereInVolume(glm::vec3 center, float radius);
void eraseSphereInVolume(glm::vec3 center, float radius);
private:
PolyVox::SimpleVolume<uint8_t>* _volData = nullptr;