73 lines
2.0 KiB
C++
73 lines
2.0 KiB
C++
#include "common.h"
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void
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CVector::Normalise(void)
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{
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#ifdef DC_SH4_BROKEN
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// TODO: This needs to handle zero vectors here
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vec3f_normalize(x, y, z);
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#else
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float sq = MagnitudeSqr();
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if (sq > 0.0f) {
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float invsqrt = RecipSqrt(sq);
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x *= invsqrt;
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y *= invsqrt;
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z *= invsqrt;
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} else
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x = 1.0f;
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#endif
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}
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CVector
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CrossProduct(const CVector &v1, const CVector &v2)
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{
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return CVector(v1.y * v2.z - v1.z * v2.y, v1.z * v2.x - v1.x * v2.z, v1.x * v2.y - v1.y * v2.x);
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}
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CVector
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Multiply3x3(const CMatrix &mat, const CVector &vec)
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{
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#if defined(DC_SH4) && 0
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register float __x __asm__("fr12") = vec.x;
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register float __y __asm__("fr13") = vec.y;
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register float __z __asm__("fr14") = vec.z;
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register float __w __asm__("fr15") = 0.0f;
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mat_load(reinterpret_cast<matrix_t *>(const_cast<CMatrix *>(&mat)));
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asm volatile( "ftrv xmtrx, fv12\n"
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: "=f" (__x), "=f" (__y), "=f" (__z), "=f" (__w)
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: "0" (__x), "1" (__y), "2" (__z), "3" (__w) );
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return { __x, __y, __z };
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#else
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// TODO: VU0 code
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return CVector(mat.rx * vec.x + mat.fx * vec.y + mat.ux * vec.z,
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mat.ry * vec.x + mat.fy * vec.y + mat.uy * vec.z,
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mat.rz * vec.x + mat.fz * vec.y + mat.uz * vec.z);
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#endif
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}
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CVector
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Multiply3x3(const CVector &vec, const CMatrix &mat)
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{
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return CVector(mat.rx * vec.x + mat.ry * vec.y + mat.rz * vec.z,
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mat.fx * vec.x + mat.fy * vec.y + mat.fz * vec.z,
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mat.ux * vec.x + mat.uy * vec.y + mat.uz * vec.z);
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}
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CVector
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operator*(const CMatrix &mat, const CVector &vec)
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{
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#if defined(DC_SH4) && 0
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CVector out;
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mat_load(reinterpret_cast<matrix_t *>(const_cast<CMatrix *>(&mat)));
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mat_trans_single3_nodiv_nomod(vec.x, vec.y, vec.z, out.x, out.y, out.z);
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return out;
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#else
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// TODO: VU0 code
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return CVector(mat.rx * vec.x + mat.fx * vec.y + mat.ux * vec.z + mat.px,
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mat.ry * vec.x + mat.fy * vec.y + mat.uy * vec.z + mat.py,
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mat.rz * vec.x + mat.fz * vec.y + mat.uz * vec.z + mat.pz);
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#endif
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}
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