1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
/* Copyright (c) 2007 Scott Lembcke
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <math.h>
#include "chipmunk.h"
cpVect
cpBBClampVect(const cpBB bb, const cpVect v)
{
cpFloat x = cpfmin(cpfmax(bb.l, v.x), bb.r);
cpFloat y = cpfmin(cpfmax(bb.b, v.y), bb.t);
return cpv(x, y);
}
cpVect
cpBBWrapVect(const cpBB bb, const cpVect v)
{
cpFloat ix = fabsf(bb.r - bb.l);
cpFloat modx = fmodf(v.x - bb.l, ix);
cpFloat x = (modx > 0.0f) ? modx : modx + ix;
cpFloat iy = fabsf(bb.t - bb.b);
cpFloat mody = fmodf(v.y - bb.b, iy);
cpFloat y = (mody > 0.0f) ? mody : mody + iy;
return cpv(x + bb.l, y + bb.b);
}
|
