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JPAMath work

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This commit is contained in:
Jasper St. Pierre
2024-07-14 13:47:55 -07:00
parent 26add38fb0
commit 506f199a2d
1 changed files with 13 additions and 3 deletions
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src/JSystem/JParticle/JPAMath.cpp
+13 -3
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@@ -8,7 +8,9 @@
#include "JSystem/JMath/JMATrigonometric.h"
#include "dolphin/types.h"
static const f32 dummy[1] = { 1.0f };
static void dummy() {
fabsf(1.0f);
}
/* 8025991C-802599A0 .text JPAGetYZRotateMtx__FssPA4_f */
void JPAGetYZRotateMtx(s16 y, s16 z, Mtx dst) {
@@ -62,11 +64,19 @@ void JPAGetDirMtx(const JGeometry::TVec3<f32>& dir, Mtx dst) {
JGeometry::TVec3<f32> perp;
perp.x = dir.y;
perp.y = -dir.x;
f32 z = dir.z;
perp.z = 0.0f;
f32 mag = perp.normalize();
f32 mag = perp.squared();
mag *= JGeometry::TUtil<f32>::inv_sqrt(mag);
if (mag <= JGeometry::TUtil<f32>::epsilon()) {
perp.x = perp.y = 0.0f;
} else {
perp.x *= (1.0f / mag);
perp.y *= (1.0f / mag);
}
f32 x = perp.x, y = perp.y, z = dir.z;
f32 x = perp.x, y = perp.y;
dst[0][0] = x*x + z * (1.0f - x*x);
dst[0][1] = (1.0f - z) * (x * y);
dst[0][2] = -y * mag;