summaryrefslogtreecommitdiff
path: root/transpiler/MathHelper.h
blob: b9c9cb636966bcdc3e720e4a9edc61800e733a52 (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
25
26
27
28
29
30
31
32
33
#pragma once

#define PI 3.14159265358979323846f

#define MIN(a,b) (((a)<(b))?(a):(b))
#define MAX(a,b) (((a)>(b))?(a):(b))
#define CLAMP(x, upper, lower) (MIN(upper, MAX(x, lower)))
#define DTOR (PI / 180.0f)
#define SWAP(x, y, T) do { T SWAP = x; x = y; y = SWAP; } while (0)

namespace MathHelper {
	inline float radiansToDegrees(float radians) {
		return radians * 180.f / PI;
	}

	inline float degreesToRadians(float degrees) {
		return degrees * PI / 180.f;
	}

	inline int nearestPowerOfTwo(int n) {
        int v = n; 

        v--;
        v |= v >> 1;
        v |= v >> 2;
        v |= v >> 4;
        v |= v >> 8;
        v |= v >> 16;
        v++; // next power of 2

        return v;
    }
}