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core1/code_31C0.c done, core1/code_3250.c done

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Banjo Kazooie
2022-10-16 13:39:56 -05:00
parent 90067074fb
commit 7e2298a89c
10 changed files with 257 additions and 120 deletions
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src/core1/code_3250.c Normal file
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#include <ultra64.h>
extern f32 gu_sqrtf(f32);
static void _guMtxF2L(float mf[4][4], Mtx *m)
{
int i, j;
int e1,e2;
int *ai,*af;
ai=(int *) &m->m[0][0];
af=(int *) &m->m[2][0];
for (i=0; i<4; i++)
for (j=0; j<2; j++) {
e1=FTOFIX32(mf[i][j*2]);
e2=FTOFIX32(mf[i][j*2+1]);
*(ai++) = ( e1 & 0xffff0000 ) | ((e2 >> 16)&0xffff);
*(af++) = ((e1 << 16) & 0xffff0000) | (e2 & 0xffff);
}
}
static void _guMtxIdentF(float mf[4][4])
{
int i, j;
for (i=0; i<4; i++)
for (j=0; j<4; j++)
if (i == j) mf[i][j] = 1.0;
else mf[i][j] = 0.0;
}
void guScaleF(float mf[4][4], float x, float y, float z)
{
_guMtxIdentF(mf);
mf[0][0] = x;
mf[1][1] = y;
mf[2][2] = z;
mf[3][3] = 1;
}
void guLookAtReflectF(float mf[4][4], LookAt *l,
float xEye, float yEye, float zEye,
float xAt, float yAt, float zAt,
float xUp, float yUp, float zUp)
{
float len, xLook, yLook, zLook, xRight, yRight, zRight;
guMtxIdentF(mf);
xLook = xAt - xEye;
yLook = yAt - yEye;
zLook = zAt - zEye;
/* Negate because positive Z is behind us: */
len = -1.0 / gu_sqrtf (xLook*xLook + yLook*yLook + zLook*zLook);
xLook *= len;
yLook *= len;
zLook *= len;
/* Right = Up x Look */
xRight = yUp * zLook - zUp * yLook;
yRight = zUp * xLook - xUp * zLook;
zRight = xUp * yLook - yUp * xLook;
len = 1.0 / gu_sqrtf (xRight*xRight + yRight*yRight + zRight*zRight);
xRight *= len;
yRight *= len;
zRight *= len;
/* Up = Look x Right */
xUp = yLook * zRight - zLook * yRight;
yUp = zLook * xRight - xLook * zRight;
zUp = xLook * yRight - yLook * xRight;
len = 1.0 / gu_sqrtf (xUp*xUp + yUp*yUp + zUp*zUp);
xUp *= len;
yUp *= len;
zUp *= len;
/* reflectance vectors = Up and Right */
l->l[0].l.dir[0] = FTOFRAC8(xRight);
l->l[0].l.dir[1] = FTOFRAC8(yRight);
l->l[0].l.dir[2] = FTOFRAC8(zRight);
l->l[1].l.dir[0] = FTOFRAC8(xUp);
l->l[1].l.dir[1] = FTOFRAC8(yUp);
l->l[1].l.dir[2] = FTOFRAC8(zUp);
l->l[0].l.col[0] = 0x00;
l->l[0].l.col[1] = 0x00;
l->l[0].l.col[2] = 0x00;
l->l[0].l.pad1 = 0x00;
l->l[0].l.colc[0] = 0x00;
l->l[0].l.colc[1] = 0x00;
l->l[0].l.colc[2] = 0x00;
l->l[0].l.pad2 = 0x00;
l->l[1].l.col[0] = 0x00;
l->l[1].l.col[1] = 0x80;
l->l[1].l.col[2] = 0x00;
l->l[1].l.pad1 = 0x00;
l->l[1].l.colc[0] = 0x00;
l->l[1].l.colc[1] = 0x80;
l->l[1].l.colc[2] = 0x00;
l->l[1].l.pad2 = 0x00;
mf[0][0] = xRight;
mf[1][0] = yRight;
mf[2][0] = zRight;
mf[3][0] = -(xEye * xRight + yEye * yRight + zEye * zRight);
mf[0][1] = xUp;
mf[1][1] = yUp;
mf[2][1] = zUp;
mf[3][1] = -(xEye * xUp + yEye * yUp + zEye * zUp);
mf[0][2] = xLook;
mf[1][2] = yLook;
mf[2][2] = zLook;
mf[3][2] = -(xEye * xLook + yEye * yLook + zEye * zLook);
mf[0][3] = 0;
mf[1][3] = 0;
mf[2][3] = 0;
mf[3][3] = 1;
}
void guLookAtReflect (Mtx *m, LookAt *l, float xEye, float yEye, float zEye,
float xAt, float yAt, float zAt,
float xUp, float yUp, float zUp)
{
float mf[4][4];
guLookAtReflectF(mf, l, xEye, yEye, zEye, xAt, yAt, zAt,
xUp, yUp, zUp);
guMtxF2L(mf, m);
}
void guScale(Mtx *m, float x, float y, float z)
{
float mf[4][4];
guScaleF(mf, x, y, z);
_guMtxF2L(mf, m);
}
void guRotateRPYF(f32 mf[4][4], f32 r, f32 p, f32 h) {
static f32 dtor = 3.1415926 / 180.0;
s32 pad;
f32 sinp, sinh, sinr;
f32 cosp, cosh, cosr;
r *= dtor;
p *= dtor;
h *= dtor;
sinr = sinf(r);
cosr = cosf(r);
sinp = sinf(p);
cosp = cosf(p);
sinh = sinf(h);
cosh = cosf(h);
guMtxIdentF(mf);
mf[0][0] = cosp * cosh;
mf[0][1] = cosp * sinh;
mf[0][2] = -sinp;
mf[1][0] = (sinr*sinp*cosh - cosr*sinh);
mf[1][1] = (sinr*sinp*sinh + cosr*cosh);
mf[1][2] = (sinr*cosp);
mf[2][0] = (cosr*sinp*cosh + sinr*sinh);
mf[2][1] = (cosr*sinp*sinh - sinr*cosh);
mf[2][2] = (cosr*cosp);
}