From 16dca7381bb37a7304fa29d553a73a068e2fe431 Mon Sep 17 00:00:00 2001
From: neoraider <devnull@localhost>
Date: Fri, 22 Apr 2005 19:51:02 +0000
Subject: Libneofx von Libzoom abgespalten

---
 collision.c | 116 ------------------------------------------------------------
 1 file changed, 116 deletions(-)
 delete mode 100644 collision.c

(limited to 'collision.c')

diff --git a/collision.c b/collision.c
deleted file mode 100644
index 8417df6..0000000
--- a/collision.c
+++ /dev/null
@@ -1,116 +0,0 @@
-#include <zoom/collision.h>
-#include <zoom/math.h>
-
-static VERTEX TriangleCollisionPoint(TRIANGLE, VERTEX);
-static VERTEX LineCollisionPoint(VERTEX, VERTEX, VERTEX);
-
-int CollisionPointTriangle(VERTEX p, TRIANGLE t) {
-	VECTOR v1, v2;
-	TRIANGLE triangle = t;
-	
-	if(VectorDot(VectorSub(p, triangle.vertices[0]), triangle.normal) > 0.0) return 0;
-	
-	v1 = VectorCross(VectorSub(triangle.vertices[2], triangle.vertices[1]), VectorSub(p, triangle.vertices[1]));
-	v2 = VectorCross(VectorSub(triangle.vertices[2], triangle.vertices[1]), VectorSub(triangle.vertices[0], triangle.vertices[1]));
-	if(VectorDot(v1, v2) < 0.0) return 0;
-	
-	v1 = VectorCross(VectorSub(triangle.vertices[2], triangle.vertices[0]), VectorSub(p, triangle.vertices[0]));
-	v2 = VectorCross(VectorSub(triangle.vertices[2], triangle.vertices[0]), VectorSub(triangle.vertices[1], triangle.vertices[0]));
-	if(VectorDot(v1, v2) < 0.0) return 0;
-	
-	v1 = VectorCross(VectorSub(triangle.vertices[1], triangle.vertices[0]), VectorSub(p, triangle.vertices[0]));
-	v2 = VectorCross(VectorSub(triangle.vertices[1], triangle.vertices[0]), VectorSub(triangle.vertices[2], triangle.vertices[0]));
-	if(VectorDot(v1, v2) < 0.0) return 0;
-	
-	return 1;
-}
-
-int CollisionRayTriangle(VERTEX p, VECTOR vec,  TRIANGLE t, float* f) {
-	VECTOR pvec, tvec, qvec, edge1, edge2;
-	float det, u, v, invDet;
-	
-	edge1 = VectorSub(t.vertices[1], t.vertices[0]);
-	edge2 = VectorSub(t.vertices[2], t.vertices[0]);
-	
-	pvec = VectorCross(vec, edge2);
-	
-	det = VectorDot(edge1, pvec);
-	
-	if(det < 0.0001) return 0;
-	
-	tvec = VectorSub(p, t.vertices[0]);
-	u = VectorDot(tvec, pvec);
-	if(u < 0.0 || u > det) return 0;
-	
-	qvec = VectorCross(tvec, edge1);
-	v = VectorDot(vec, qvec);
-	if(v < 0.0 || u+v > det) return 0;
-	
-	if(f) {
-		*f = VectorDot(edge2, qvec);
-		invDet = 1.0 / det;
-		*f *= invDet;
-	}
-	
-	return 1;
-}
-
-static VERTEX LineCollisionPoint(VERTEX v1, VERTEX v2, VERTEX p) {
-	VECTOR c;
-	VECTOR V;
-	float d;
-	float t;
-	
-	c = VectorSub(p, v1);
-	V = VectorSub(v2, v1);
-	d = VectorLengthSq(V);
-	t = VectorDot(V, c);
-	
-	if(t < 0) return v1;
-	if(t > d) return v2;
-	
-	return VectorAdd(v1, VectorMul(V, t/d));
-}
-
-static VERTEX TriangleCollisionPoint(TRIANGLE t, VERTEX p) {
-	VERTEX v1, v2, v3;
-	
-	v1 = LineCollisionPoint(t.vertices[0], t.vertices[1], p);
-	v2 = LineCollisionPoint(t.vertices[1], t.vertices[2], p);
-	v3 = LineCollisionPoint(t.vertices[2], t.vertices[0], p);
-	
-	if(VectorLengthSq(VectorSub(v1, p)) < VectorLengthSq(VectorSub(v2, p)) &&
-		VectorLengthSq(VectorSub(v1, p)) < VectorLengthSq(VectorSub(v3, p))) return v1;
-	if(VectorLengthSq(VectorSub(v2, p)) < VectorLengthSq(VectorSub(v3, p))) return v2;
-	return v3;
-}
-
-int CollisionSphereTriangle(VERTEX p, float r, TRIANGLE t) {
-	float f;
-	VERTEX v;
-	
-	/*if(CollisionRayTriangle(VectorAdd(p, VectorMul(VectorNeg(t.normal), r)), m, t, &f)) {*/
-	if(CollisionRayTriangle(p, VectorNeg(t.normal), t, &f)) {
-		if(f < r) return 1;
-		return 0; 
-	}
-	
-	v = TriangleCollisionPoint(t, p);
-	if(VectorLengthSq(VectorSub(p, v)) < r*r) return 1;
-	return 0;
-}
-
-int CollisionMovingSphereTriangle(VERTEX p, float r, VECTOR m, float l, TRIANGLE t) {
-	float f;
-	VERTEX v;
-	
-	if(CollisionRayTriangle(VectorAdd(p, VectorMul(VectorNeg(t.normal), r)), m, t, &f)) {
-		if(f < l) return 1;
-		return 0; 
-	}
-	
-	v = TriangleCollisionPoint(t, p);
-	v = LineCollisionPoint(v, VectorSub(v, VectorMul(m, l)), p);
-	if(VectorLengthSq(VectorSub(p, v)) < r*r) return 1;
-	return 0;
-}
-- 
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