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Moved and re-implemented gradient

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Martin Opat
2025-01-15 14:45:38 +01:00
parent b700216186
commit 7fa2954e17
2 changed files with 27 additions and 30 deletions
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14
src/illumination/transferFunction.cu
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@@ -4,20 +4,6 @@
#include <stdio.h>
// Samples the voxel nearest to the given coordinates.
__device__ float sampleVolumeNearest(float* volumeData, const int volW, const int volH, const int volD, int vx, int vy, int vz) {
// x <-> height, y <-> width, z <-> depth <--- So far this is the best one
if (vx < 0) vx = 0;
if (vy < 0) vy = 0;
if (vz < 0) vz = 0;
if (vx >= volH) vx = volH - 1;
if (vy >= volW) vy = volW - 1;
if (vz >= volD) vz = volD - 1;
int idx = vz * volW * volH + vx * volW + vy;
return volumeData[idx];
}
// tri-linear interpolation - ready if necessary (but no visible improvement for full volume)
__device__ float sampleVolumeTrilinear(float* volumeData, const int volW, const int volH, const int volD, float fx, float fy, float fz) {
int ix = (int)floorf(fx);