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add SURFACE_EDGED_MARCHING_CUBES polyvox surface extraction style

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This commit is contained in:
Seth Alves 2015-08-15 12:18:36 -07:00
parent 27e5322cb4
commit 79a7755cdb
3 changed files with 15 additions and 10 deletions
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1
examples/html/entityProperties.html
View file

@ -1072,6 +1072,7 @@
<option value='0'>marching cubes</option>
<option value='1'>cubic</option>
<option value='2'>edged cubic</option>
<option value='3'>edged marching cubes</option>
</select>
</div>

21
libraries/entities-renderer/src/RenderablePolyVoxEntityItem.cpp
View file

@ -78,6 +78,7 @@ bool inUserBounds(const PolyVox::SimpleVolume<uint8_t>* vol, PolyVoxEntityItem::
return true;
case PolyVoxEntityItem::SURFACE_EDGED_CUBIC:
case PolyVoxEntityItem::SURFACE_EDGED_MARCHING_CUBES:
if (x < 0 || y < 0 || z < 0 ||
x >= vol->getWidth() - 2 || y >= vol->getHeight() - 2 || z >= vol->getDepth() - 2) {
return false;
@ -112,7 +113,7 @@ void RenderablePolyVoxEntityItem::setVoxelVolumeSize(glm::vec3 voxelVolumeSize)
_onCount = 0;
if (_voxelSurfaceStyle == SURFACE_EDGED_CUBIC) {
if (_voxelSurfaceStyle == SURFACE_EDGED_CUBIC || _voxelSurfaceStyle == SURFACE_EDGED_MARCHING_CUBES) {
// with _EDGED_ we maintain an extra box of voxels around those that the user asked for. This
// changes how the surface extractor acts -- mainly it becomes impossible to have holes in the
// generated mesh. The non _EDGED_ modes will leave holes in the mesh at the edges of the
@ -156,8 +157,7 @@ void RenderablePolyVoxEntityItem::setVoxelVolumeSize(glm::vec3 voxelVolumeSize)
void RenderablePolyVoxEntityItem::updateVoxelSurfaceStyle(PolyVoxSurfaceStyle voxelSurfaceStyle) {
// if we are switching to or from "edged" we need to force a resize of _volData.
if (voxelSurfaceStyle == SURFACE_EDGED_CUBIC ||
_voxelSurfaceStyle == SURFACE_EDGED_CUBIC) {
if (voxelSurfaceStyle == SURFACE_EDGED_CUBIC || _voxelSurfaceStyle == SURFACE_EDGED_MARCHING_CUBES) {
if (_volData) {
delete _volData;
}
@ -182,11 +182,11 @@ glm::vec3 RenderablePolyVoxEntityItem::getSurfacePositionAdjustment() const {
glm::vec3 scale = getDimensions() / _voxelVolumeSize; // meters / voxel-units
switch (_voxelSurfaceStyle) {
case PolyVoxEntityItem::SURFACE_MARCHING_CUBES:
return scale / 2.0f;
case PolyVoxEntityItem::SURFACE_EDGED_CUBIC:
return scale / -2.0f;
case PolyVoxEntityItem::SURFACE_CUBIC:
return scale / 2.0f;
case PolyVoxEntityItem::SURFACE_EDGED_CUBIC:
case PolyVoxEntityItem::SURFACE_EDGED_MARCHING_CUBES:
return scale / -2.0f;
}
return glm::vec3(0.0f, 0.0f, 0.0f);
}
@ -223,7 +223,7 @@ uint8_t RenderablePolyVoxEntityItem::getVoxel(int x, int y, int z) {
// voxels all around the requested voxel space. Having the empty voxels around
// the edges changes how the surface extractor behaves.
if (_voxelSurfaceStyle == SURFACE_EDGED_CUBIC) {
if (_voxelSurfaceStyle == SURFACE_EDGED_CUBIC || _voxelSurfaceStyle == SURFACE_EDGED_MARCHING_CUBES) {
return _volData->getVoxelAt(x + 1, y + 1, z + 1);
}
return _volData->getVoxelAt(x, y, z);
@ -238,7 +238,7 @@ void RenderablePolyVoxEntityItem::setVoxelInternal(int x, int y, int z, uint8_t
updateOnCount(x, y, z, toValue);
if (_voxelSurfaceStyle == SURFACE_EDGED_CUBIC) {
if (_voxelSurfaceStyle == SURFACE_EDGED_CUBIC || _voxelSurfaceStyle == SURFACE_EDGED_MARCHING_CUBES) {
_volData->setVoxelAt(x + 1, y + 1, z + 1, toValue);
} else {
_volData->setVoxelAt(x, y, z, toValue);
@ -399,6 +399,7 @@ bool RenderablePolyVoxEntityItem::findDetailedRayIntersection(const glm::vec3& o
glm::vec4 result = callback._result;
switch (_voxelSurfaceStyle) {
case PolyVoxEntityItem::SURFACE_EDGED_CUBIC:
case PolyVoxEntityItem::SURFACE_EDGED_MARCHING_CUBES:
result -= glm::vec4(1, 1, 1, 0); // compensate for the extra voxel border
break;
case PolyVoxEntityItem::SURFACE_MARCHING_CUBES:
@ -556,7 +557,8 @@ void RenderablePolyVoxEntityItem::computeShapeInfo(ShapeInfo& info) {
AABox box;
glm::mat4 vtoM = voxelToLocalMatrix();
if (_voxelSurfaceStyle == PolyVoxEntityItem::SURFACE_MARCHING_CUBES) {
if (_voxelSurfaceStyle == PolyVoxEntityItem::SURFACE_MARCHING_CUBES ||
_voxelSurfaceStyle == PolyVoxEntityItem::SURFACE_EDGED_MARCHING_CUBES) {
unsigned int i = 0;
/* pull top-facing triangles into polyhedrons so they can be walked on */
const model::MeshPointer& mesh = _modelGeometry.getMesh();
@ -683,6 +685,7 @@ void RenderablePolyVoxEntityItem::getModel() {
PolyVox::SurfaceMesh<PolyVox::PositionMaterialNormal> polyVoxMesh;
switch (_voxelSurfaceStyle) {
case PolyVoxEntityItem::SURFACE_EDGED_MARCHING_CUBES:
case PolyVoxEntityItem::SURFACE_MARCHING_CUBES: {
PolyVox::MarchingCubesSurfaceExtractor<PolyVox::SimpleVolume<uint8_t>> surfaceExtractor
(_volData, _volData->getEnclosingRegion(), &polyVoxMesh);

3
libraries/entities/src/PolyVoxEntityItem.h
View file

@ -58,7 +58,8 @@ class PolyVoxEntityItem : public EntityItem {
enum PolyVoxSurfaceStyle {
SURFACE_MARCHING_CUBES,
SURFACE_CUBIC,
SURFACE_EDGED_CUBIC
SURFACE_EDGED_CUBIC,
SURFACE_EDGED_MARCHING_CUBES
};
void setVoxelSurfaceStyle(PolyVoxSurfaceStyle voxelSurfaceStyle);