AnotherFoxGuy/polyvox
1
0
Fork 0
Code Issues Pull Requests Activity

Refactoring example code.

Browse Source
This commit is contained in:
David Williams
2015-02-20 11:23:17 +01:00
parent 3f849e19a4
commit 565aa21799
5 changed files with 232 additions and 198 deletions
Download Patch File Download Diff File Expand all files Collapse all files

85
examples/Paging/main.cpp
View File

@ -139,48 +139,61 @@ public:
}
};
class PagingExample : public OpenGLWidget
{
public:
PagingExample(QWidget *parent)
:OpenGLWidget(parent)
{
}
protected:
void initialize() override
{
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();
}