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vp_warp.c File Reference
#include "vp_global.h"
Go to the source code of this file.
Function Documentation
| void OrderCoords ANSI_ARGS |
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(double coords[4][2], double lft[3][2], double rgt[3][2]) |
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| void VPComputeWarpTables |
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Definition at line 47 of file vp_warp.c.
References BilirpWeightsReady, VPBilirpWeight, and WARP_WEIGHT_ENTRIES.
00048 {
00049 float *wptr;
00050
00051 int x, y;
00052 double in_x, in_y;
00053
00054 if (BilirpWeightsReady)
00055 return;
00056
00057 #ifdef MEMSPY
00058 bin_init(BinNumber(__LINE__, __FILE__, "VPBilirpWeight"), -1, -1,
00059 VPBilirpWeight, sizeof(VPBilirpWeight), "VPBilirpWeight");
00060 #endif
00061
00062 wptr = &VPBilirpWeight[0][0][0];
00063 for (y = 0; y < WARP_WEIGHT_ENTRIES; y++) {
00064 in_y = (double)y / (WARP_WEIGHT_ENTRIES-1);
00065 for (x = 0; x < WARP_WEIGHT_ENTRIES; x++) {
00066 in_x = (double)x / (WARP_WEIGHT_ENTRIES-1);
00067 *wptr++ = (1. - in_x)*(1. - in_y);
00068 *wptr++ = in_x * (1. - in_y);
00069 *wptr++ = (1. - in_x) * in_y;
00070 *wptr++ = 1. - wptr[-1] - wptr[-2] - wptr[-3];
00071 }
00072 }
00073
00074 BilirpWeightsReady = 1;
00075 }
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Variable Documentation
int BilirpWeightsReady = 0 [static]
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| float VPBilirpWeight[WARP_WEIGHT_ENTRIES][WARP_WEIGHT_ENTRIES][4]
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