46 lines
1.0 KiB
C
46 lines
1.0 KiB
C
#include "vec_util.h"
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bool vec2_is_null(Vector2 v) {
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if (v.x == 0 && v.y == 0) {
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return true;
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}
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return false;
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}
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Vector2 transform_to_center(Vector2 v) {
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int width = GetRenderWidth();
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int height = GetRenderHeight();
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Vector2 result = {v.x + width / 2.0, v.y + height / 2.0};
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return result;
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}
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Vector2 vec2_sum(const Vector2 *a, const Vector2 *b) {
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Vector2 result = {a->x + b->x, a->y + b->y};
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return result;
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}
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Vector2 vec2_diff(const Vector2 *a, const Vector2 *b) {
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Vector2 result = {a->x - b->x, a->y - b->y};
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return result;
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}
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float vec2_len(Vector2 v) { return sqrtf(v.x * v.x + v.y * v.y); }
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Vector2 vec2_normalize(const Vector2 v) {
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float len = vec2_len(v);
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if (len == 0) {
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return NULL_VEC2;
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}
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Vector2 result = {v.x / len, v.y / len};
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return result;
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}
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Vector2 vec2_scale(const Vector2 *normal, const float len) {
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Vector2 result = {len * normal->x, len * normal->y};
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return result;
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}
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float vec2_dot(const Vector2 *a, const Vector2 *b) {
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return a->x * b->x + a->y * b->y;
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}
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