Import Cai1Hsu/re3 @ miami (reVC / GTA:VC decompilation)HEADmiami

Snapshot import (no upstream history) into git.ancap.in.ua/claude, per @lzcnt.
Source: https://github.com/Cai1Hsu/re3 branch miami.

1 files changed, 46 insertions, 0 deletions

diff --git a/src/math/Vector.cpp b/src/math/Vector.cpp
new file mode 100644
index 0000000..ee76e55
--- /dev/null
+++ b/src/math/Vector.cpp
@@ -0,0 +1,46 @@
+#include "common.h"
+
+void
+CVector::Normalise(void)
+{
+	float sq = MagnitudeSqr();
+	if (sq > 0.0f) {
+		float invsqrt = RecipSqrt(sq);
+		x *= invsqrt;
+		y *= invsqrt;
+		z *= invsqrt;
+	} else
+		x = 1.0f;
+}
+
+CVector
+CrossProduct(const CVector &v1, const CVector &v2)
+{
+	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);
+}
+
+CVector
+Multiply3x3(const CMatrix &mat, const CVector &vec)
+{
+	// TODO: VU0 code
+	return CVector(mat.rx * vec.x + mat.fx * vec.y + mat.ux * vec.z,
+	               mat.ry * vec.x + mat.fy * vec.y + mat.uy * vec.z,
+	               mat.rz * vec.x + mat.fz * vec.y + mat.uz * vec.z);
+}
+
+CVector
+Multiply3x3(const CVector &vec, const CMatrix &mat)
+{
+	return CVector(mat.rx * vec.x + mat.ry * vec.y + mat.rz * vec.z,
+	               mat.fx * vec.x + mat.fy * vec.y + mat.fz * vec.z,
+	               mat.ux * vec.x + mat.uy * vec.y + mat.uz * vec.z);
+}
+
+CVector
+operator*(const CMatrix &mat, const CVector &vec)
+{
+	// TODO: VU0 code
+	return CVector(mat.rx * vec.x + mat.fx * vec.y + mat.ux * vec.z + mat.px,
+	               mat.ry * vec.x + mat.fy * vec.y + mat.uy * vec.z + mat.py,
+	               mat.rz * vec.x + mat.fz * vec.y + mat.uz * vec.z + mat.pz);
+}