blob: 0e008db9d3da210063b898a34c81a26c1b5b03f2 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
|
/* Copyright (c) 2001, Stanford University
* All rights reserved
*
* See the file LICENSE.txt for information on redistributing this software.
*/
#include "cr_error.h"
#include "cr_warp.h"
void
crWarpPoint(const float *align, const float *point, float *result)
{
float w, x, y;
x = align[0] * point[0] + align[1] * point[1] + align[2];
y = align[3] * point[0] + align[4] * point[1] + align[5];
w = align[6] * point[0] + align[7] * point[1] + align[8];
if (w == 0)
crError("Crud in alignment matrix --> w == 0. bleh!");
result[0] = x / w;
result[1] = y / w;
}
|
