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#ifndef prbm_h
#define prbm_h
#include "types.h"
struct v2 {
f32 x;
f32 y;
};
struct v3 {
f32 x;
f32 y;
f32 z;
};
struct v4 {
f32 x;
f32 y;
f32 z;
f32 w;
};
// column-major
struct mat {
struct v4 c0;
struct v4 c1;
struct v4 c2;
struct v4 c3;
};
struct rect {
struct v2 start;
struct v2 end;
};
#define v2_zero (struct v2){ 0.0f, 0.0f}
#define v2_one (struct v2){ 1.0f, 1.0f}
#define v2_right (struct v2){ 1.0f, 0.0f}
#define v2_up (struct v2){ 0.0f, 1.0f}
#define v2_left (struct v2){-1.0f, 0.0f}
#define v2_down (struct v2){ 0.0f, -1.0f}
#define v3_zero (struct v3){ 0.0f, 0.0f, 0.0f}
#define v3_one (struct v3){ 1.0f, 1.0f, 1.0f}
#define v3_right (struct v3){ 1.0f, 0.0f, 0.0f}
#define v3_up (struct v3){ 0.0f, 1.0f, 0.0f}
#define v3_left (struct v3){-1.0f, 0.0f, 0.0f}
#define v3_down (struct v3){ 0.0f, -1.0f, 0.0f}
#define v3_forward (struct v3){ 0.0f, 0.0f, 1.0f}
#define v3_backward (struct v3){ 0.0f, 0.0f, -1.0f}
#define v4_zero (struct v4){0.0f, 0.0f, 0.0f, 0.0f}
#define v4_one (struct v4){1.0f, 1.0f, 1.0f, 1.0f}
#define mat_identity (struct mat){ \
{1.0f, 0.0f, 0.0f, 0.0f}, \
{0.0f, 1.0f, 0.0f, 0.0f}, \
{0.0f, 0.0f, 1.0f, 0.0f}, \
{0.0f, 0.0f, 0.0f, 1.0f}}
#define f32pi 3.14159265359f
#define deg2rad(angle) (f32pi/180.0f*(angle))
struct v2 fillv2(f32 a);
struct v2 invv2(struct v2 a);
struct v2 addv2(struct v2 a, struct v2 b);
struct v2 subv2(struct v2 a, struct v2 b);
struct v2 scalev2(struct v2 a, f32 s);
struct v2 scalevv2(struct v2 a, struct v2 s);
f32 dotv2(struct v2 a, struct v2 b);
f32 len2v2(struct v2 a);
f32 lenv2(struct v2 a);
struct v2 normv2(struct v2 a);
struct v3 fillv3(f32 a);
struct v3 invv3(struct v3 a);
struct v3 addv3(struct v3 a, struct v3 b);
struct v3 subv3(struct v3 a, struct v3 b);
struct v3 scalev3(struct v3 a, f32 s);
struct v3 scalevv3(struct v3 a, struct v3 s);
f32 dotv3(struct v3 a, struct v3 b);
struct v3 crossv3(struct v3 l, struct v3 r);
f32 len2v3(struct v3 a);
f32 lenv3(struct v3 a);
struct v3 normv3(struct v3 a);
struct v4 fillv4(f32 a);
struct v4 invv4(struct v4 a);
struct v4 addv4(struct v4 a, struct v4 b);
struct v4 subv4(struct v4 a, struct v4 b);
struct v4 scalev4(struct v4 a, f32 s);
struct v4 scalevv4(struct v4 a, struct v4 s);
f32 dotv4(struct v4 a, struct v4 b);
f32 len2v4(struct v4 a);
f32 lenv4(struct v4 a);
struct v4 normv4(struct v4 a);
struct mat transpmat(struct mat m);
struct mat mulmat(struct mat left, struct mat right);
struct mat make_translate(struct v3 v);
struct mat make_scale(struct v3 v);
struct mat make_rotate(struct v3 x, struct v3 y, struct v3 z);
struct mat translate_mat(struct mat m, struct v3 v);
struct mat scale_mat(struct mat m, struct v3 v);
struct mat rotate_mat(struct mat m, struct v3 angles);
struct v4 mulmatv4(struct mat m, struct v4 v);
i32 in_rect(struct v2 pos, struct rect rect);
#endif
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