From 373dc625f82b47096893add42c4472e4a57ab7eb Mon Sep 17 00:00:00 2001
From: Aki <please@ignore.pl>
Date: Wed, 9 Feb 2022 22:23:03 +0100
Subject: Moved third-party libraries to a separate subdirectory

---
 contrib/Opcode/OPC_PlanesTriOverlap.h | 40 +++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 contrib/Opcode/OPC_PlanesTriOverlap.h

(limited to 'contrib/Opcode/OPC_PlanesTriOverlap.h')

diff --git a/contrib/Opcode/OPC_PlanesTriOverlap.h b/contrib/Opcode/OPC_PlanesTriOverlap.h
new file mode 100644
index 0000000..17d065d
--- /dev/null
+++ b/contrib/Opcode/OPC_PlanesTriOverlap.h
@@ -0,0 +1,40 @@
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+/**
+ *	Planes-triangle overlap test.
+ *	\param		in_clip_mask	[in] bitmask for active planes
+ *	\return		TRUE if triangle overlap planes
+ *	\warning	THIS IS A CONSERVATIVE TEST !! Some triangles will be returned as intersecting, while they're not!
+ */
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+inline_ BOOL PlanesCollider::PlanesTriOverlap(udword in_clip_mask)
+{
+	// Stats
+	mNbVolumePrimTests++;
+
+	const IcePlane* p = mPlanes;
+	udword Mask = 1;
+
+	while(Mask<=in_clip_mask)
+	{
+		if(in_clip_mask & Mask)
+		{
+			float d0 = p->Distance(*mVP.Vertex[0]);
+			float d1 = p->Distance(*mVP.Vertex[1]);
+			float d2 = p->Distance(*mVP.Vertex[2]);
+			if(d0>0.0f && d1>0.0f && d2>0.0f)	return FALSE;
+//			if(!(IR(d0)&SIGN_BITMASK) && !(IR(d1)&SIGN_BITMASK) && !(IR(d2)&SIGN_BITMASK))	return FALSE;
+		}
+		Mask+=Mask;
+		p++;
+	}
+/*
+	for(udword i=0;i<6;i++)
+	{
+		float d0 = p[i].Distance(mLeafVerts[0]);
+		float d1 = p[i].Distance(mLeafVerts[1]);
+		float d2 = p[i].Distance(mLeafVerts[2]);
+		if(d0>0.0f && d1>0.0f && d2>0.0f)	return false;
+	}
+*/
+	return TRUE;
+}
-- 
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