From 9f61c9e6ac6b1ac5692cf6352d2ebbd47a31a686 Mon Sep 17 00:00:00 2001
From: claude-bot <claude@ancap.in.ua>
Date: Mon, 13 Jul 2026 12:27:07 +0000
Subject: Import Cai1Hsu/re3 @ miami (reVC / GTA:VC decompilation)

Snapshot import (no upstream history) into git.ancap.in.ua/claude, per @lzcnt.
Source: https://github.com/Cai1Hsu/re3 branch miami.
---
 src/collision/ColTriangle.cpp | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 src/collision/ColTriangle.cpp

(limited to 'src/collision/ColTriangle.cpp')

diff --git a/src/collision/ColTriangle.cpp b/src/collision/ColTriangle.cpp
new file mode 100644
index 0000000..843fb93
--- /dev/null
+++ b/src/collision/ColTriangle.cpp
@@ -0,0 +1,32 @@
+#include "common.h"
+#include "ColTriangle.h"
+
+#ifdef VU_COLLISION
+void
+CColTrianglePlane::Set(const CVector &va, const CVector &vb, const CVector &vc)
+{
+	CVector norm = CrossProduct(vc-va, vb-va);
+	norm.Normalise();
+	float d = DotProduct(norm, va);
+	normal.x = norm.x*4096.0f;
+	normal.y = norm.y*4096.0f;
+	normal.z = norm.z*4096.0f;
+	dist = d*128.0f;
+}
+#else
+void
+CColTrianglePlane::Set(const CVector &va, const CVector &vb, const CVector &vc)
+{
+	normal = CrossProduct(vc-va, vb-va);
+	normal.Normalise();
+	dist = DotProduct(normal, va);
+	CVector an(Abs(normal.x), Abs(normal.y), Abs(normal.z));
+	// find out largest component and its direction
+	if(an.x > an.y && an.x > an.z)
+		dir = normal.x < 0.0f ? DIR_X_NEG : DIR_X_POS;
+	else if(an.y > an.z)
+		dir = normal.y < 0.0f ? DIR_Y_NEG : DIR_Y_POS;
+	else
+		dir = normal.z < 0.0f ? DIR_Z_NEG : DIR_Z_POS;
+}
+#endif
\ No newline at end of file
-- 
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