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#include "libultra_internal.h"
#include "src/port/interpolation/FrameInterpolation.h"
void guOrthoF(float m[4][4], float left, float right, float bottom, float top, float near, float far, float scale) {
int row;
int col;
FrameInterpolation_Record_guOrtho(m, left, right, bottom, top, near, far, scale);
guMtxIdentF(m);
m[0][0] = 2 / (right - left);
m[1][1] = 2 / (top - bottom);
m[2][2] = -2 / (far - near);
m[3][0] = -(right + left) / (right - left);
m[3][1] = -(top + bottom) / (top - bottom);
m[3][2] = -(far + near) / (far - near);
m[3][3] = 1;
for (row = 0; row < 4; row++) {
for (col = 0; col < 4; col++) {
m[row][col] *= scale;
}
}
}
void guOrtho(Mtx* m, float left, float right, float bottom, float top, float near, float far, float scale) {
float mtxF[4][4];
guOrthoF(mtxF, left, right, bottom, top, near, far, scale);
FrameInterpolation_RecordMatrixMtxFToMtx(mtxF, m);
guMtxF2L(mtxF, m);
}
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