mirror of https://github.com/bgiraudr/Adoranda.git
43 lines
1.0 KiB
C
43 lines
1.0 KiB
C
#include "vec2.h"
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struct Vec2 vec2_add(struct Vec2 v1, struct Vec2 v2) {
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return VEC2(v1.x + v2.x, v1.y + v2.y);
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}
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struct Vec2f vec2f_add(struct Vec2f v1, struct Vec2f v2) {
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return VEC2F(v1.x + v2.x, v1.y + v2.y);
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}
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struct Vec2 vec2_sub(struct Vec2 v1, struct Vec2 v2) {
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return VEC2(v1.x - v2.x, v1.y - v2.y);
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}
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struct Vec2f vec2f_sub(struct Vec2f v1, struct Vec2f v2) {
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return VEC2F(v1.x - v2.x, v1.y - v2.y);
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}
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struct Vec2 vec2_mul(struct Vec2 v, int scale) {
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return VEC2(v.x * scale, v.y * scale);
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}
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struct Vec2f vec2f_mul(struct Vec2f v, int scale) {
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return VEC2F(v.x * scale, v.y * scale);
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}
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struct Vec2 vec2f_vec2(struct Vec2f v) {
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return VEC2(v.x, v.y);
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}
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struct Vec2f vec2_vec2f(struct Vec2 v) {
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return VEC2F(v.x, v.y);
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}
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struct Vec2f vec2f_lerp(struct Vec2f from, struct Vec2f to, float scale) {
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/* Linear interpolation: can be used for camera and animations.
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* 'scale' is the transformation speed, 0 slow and 1 fast. */
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return VEC2F(
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from.x * (1.0-scale) + to.x * scale,
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from.y * (1.0-scale) + to.y * scale
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);
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}
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