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This commit is contained in:
Perttu Ahola 2011-10-15 02:28:57 +03:00
parent 080002f8ed
commit 43a28f04fa
29 changed files with 1720 additions and 2889 deletions

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@ -810,6 +810,35 @@ inline float wrapDegrees(float f)
return f;
}
/* Wrap to 0...360 */
inline float wrapDegrees_0_360(float f)
{
// Take examples of f=10, f=720.5, f=-0.5, f=-360.5
// This results in
// 10, 720, -1, -361
int i = floor(f);
// 0, 2, 0, -1
int l = i / 360;
// Wrap to 0...360
// 0, 2, -1, -2
if(i < 0)
l -= 1;
// 0, 720, 0, -360
int k = l * 360;
// 10, 0.5, -0.5, -0.5
f -= float(k);
return f;
}
/* Wrap to -180...180 */
inline float wrapDegrees_180(float f)
{
f += 180;
f = wrapDegrees_0_360(f);
f -= 180;
return f;
}
inline std::string lowercase(const std::string &s)
{
std::string s2;