forked from Hello100blog/gl_cuda_interop_pingpong_st
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simulationInit.cpp
120 lines (100 loc) · 3.24 KB
/
simulationInit.cpp
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#include "gl_cu_interop_pingpong_st.h"
///////////////////////////////////////////////////////////////////////////////////////////////////////
void Sample::setVisualizationParameters()
{
// Visualization parameters:
nv_math::vec2f range(0.0f, 10.0f);
m_colLow = nv_math::vec3f(0.0f, 0.0f, 1.0f);
m_colHigh = nv_math::vec3f(1.0f, 0.0157f, 0.0f);
// Simulation parameters
m_cellWidth = 1.0f / m_volumeTexDimension;
m_alpha = 0.00001f; //Just the thermal diffusivity constant for the heat equation
// Pack and send some visualization parameters to gl
float factor = 1.0f/(range[1] - range[0]);
float offset = -range[0]*factor;
range = nv_math::vec2f(factor, offset);
m_glslVolume->use();
m_glslVolume->setUniform(ULOC_MODEL2WORLD, nv_math::mat4f(1.0f) );
m_glslVolume->setUniform(ULOC_VISRANGE, range);
}
///////////////////////////////////////////////////////////////////////////////////////////////////////
void Sample::createSampleVolume( std::vector<float>& out, unsigned int volumeTexSize, float factor )
{
m_volumeCoeff = factor;
int size = volumeTexSize*volumeTexSize*volumeTexSize;
out.resize(size);
float endCoeff = m_volumeCoeff / (1.0f + 3.0f*128.0f*128.0f);
{
unsigned int x = volumeTexSize-1;
for(unsigned int y = 0; y < volumeTexSize; y++)
{
for(unsigned int z = 0; z < volumeTexSize; z++)
{
out[(x + y * volumeTexSize) + (z * volumeTexSize * volumeTexSize)] = 10.0f;
}
}
}
{
unsigned int z = 0;
for(unsigned int x = 0; x < volumeTexSize; x++)
{
for(unsigned int y = 0; y < volumeTexSize; y++)
{
out[(x + y * volumeTexSize) + (z * volumeTexSize * volumeTexSize)] = endCoeff;
}
}
}
{
unsigned int z = volumeTexSize-1;
for(unsigned int x = 0; x < volumeTexSize; x++)
{
for(unsigned int y = 0; y < volumeTexSize; y++)
{
out[(x + y * volumeTexSize) + (z * volumeTexSize * volumeTexSize)] = endCoeff;
}
}
}
{
unsigned int y = 0;
for(unsigned int x = 0; x < volumeTexSize; x++)
{
for(unsigned int z = 0; z < volumeTexSize; z++)
{
out[(x + y * volumeTexSize) + (z * volumeTexSize * volumeTexSize)] = endCoeff;
}
}
}
{
unsigned int y = volumeTexSize-1;
for(unsigned int x = 0; x < volumeTexSize; x++)
{
for(unsigned int z = 0; z < volumeTexSize; z++)
{
out[(x + y * volumeTexSize) + (z * volumeTexSize * volumeTexSize)] = endCoeff;
}
}
}
{
unsigned int x = 0;
for(unsigned int y = 0; y < volumeTexSize; y++)
{
for(unsigned int z = 0; z < volumeTexSize; z++)
{
out[(x + y * volumeTexSize) + (z * volumeTexSize * volumeTexSize)] = endCoeff;
}
}
}
for(unsigned int x = 1; x < volumeTexSize - 1; x++)
{
for(unsigned int y = 1; y < volumeTexSize - 1; y++)
{
for(unsigned int z = 1; z < volumeTexSize - 1; z++)
{
float xFromCenter = 0.5f*volumeTexSize - x;
float yFromCenter = 0.5f*volumeTexSize - y;
float zFromCenter = 0.5f*volumeTexSize - z;
out[x + (y * volumeTexSize) + (z * volumeTexSize * volumeTexSize)] = m_volumeCoeff / (1.0f + xFromCenter*xFromCenter + yFromCenter*yFromCenter + zFromCenter*zFromCenter);
}
}
}
}