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oot/src/libultra/gu/ortho.c
Tharo f1d183d6fe
libultra files and directories restructure (#1038)
* Restructure files, begin header restructure

* Format

* us2dex

* Fix parallel spelling

Co-authored-by: JoshDuMan <40190173+JoshDuMan@users.noreply.github.com>

* Use OS_K0_TO_PHYSICAL in place of VIRTUAL_TO_PHYSICAL in osAiSetNextBuffer

* Uppercase hex, exception vector address defines

* Interrupt flags 1

Co-authored-by: Dragorn421 <Dragorn421@users.noreply.github.com>

* Interrupt flags 2

Co-authored-by: Dragorn421 <Dragorn421@users.noreply.github.com>

Co-authored-by: JoshDuMan <40190173+JoshDuMan@users.noreply.github.com>
Co-authored-by: Dragorn421 <Dragorn421@users.noreply.github.com>
2021-11-30 19:08:57 -05:00

29 lines
751 B
C

#include "global.h"
void guOrthoF(f32 mf[4][4], f32 left, f32 right, f32 bottom, f32 top, f32 near, f32 far, f32 scale) {
s32 i, j;
guMtxIdentF(mf);
mf[0][0] = 2 / (right - left);
mf[1][1] = 2 / (top - bottom);
mf[2][2] = -2 / (far - near);
mf[3][0] = -(right + left) / (right - left);
mf[3][1] = -(top + bottom) / (top - bottom);
mf[3][2] = -(far + near) / (far - near);
mf[3][3] = 1;
for (i = 0; i < 4; i++) {
for (j = 0; j < 4; j++) {
mf[i][j] *= scale;
}
}
}
void guOrtho(Mtx* mtx, f32 left, f32 right, f32 bottom, f32 top, f32 near, f32 far, f32 scale) {
f32 mf[4][4];
guOrthoF(mf, left, right, bottom, top, near, far, scale);
guMtxF2L((MtxF*)mf, mtx);
}