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#include <math.h>
#include "math.h"
#include "../util/assert.h"
#include "../core/mem.h"
Vec4 vec4zero = { 0, 0, 0,0 };
static Vec4 sharedmat4;
void vec4_dividew(Vec4* v, Vec3* out) {
ssr_assert(out && v);
float w = 1.f / v->w;
out->x = v->x * w ;
out->y = v->y * w;
out->z = v->z * w;
}
void vec4_dividewnoz(Vec4* v, Vec4* out) {
ssr_assert(out && v);
float w = 1.f / v->w;
out->x = v->x * w;
out->y = v->y * w;
out->z = v->z;
out->w = v->w;
}
void vec4_tostring(Vec4* v, char buf[]) {
sprintf(buf, "%8.3f %8.3f %8.3f %8.3f", v->x, v->y, v->z, v->w);
}
void vec4_print(Vec4* v) {
vec4_tostring(v, printbuffer);
printf("\n%s\n", printbuffer);
}
void vec4_lerp(Vec4* a, Vec4* b, float t, Vec4* out) {
out->x = lerp(a->x, b->x, t);
out->y = lerp(a->y, b->y, t);
out->z = lerp(a->z, b->z, t);
out->w = lerp(a->w, b->w, t);
}
void vec4_scale(Vec4* v, float t, Vec4* out) {
out->x = v->x * t;
out->y = v->y * t;
out->z = v->z * t;
out->w = v->w * t;
}
void vec4_add(Vec4* v1, Vec4* v2, Vec4* out) {
out->x = v1->x + v2->x;
out->y = v1->y + v2->y;
out->z = v1->z + v2->z;
out->w = v1->w + v2->w;
}
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