update assimp lib

Engine/lib/assimp/code/Geometry/GeometryUtils.cpp

@@ -0,0 +1,103 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2024, assimp team
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the
+following conditions are met:
+
+* Redistributions of source code must retain the above
+  copyright notice, this list of conditions and the
+  following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the
+  following disclaimer in the documentation and/or other
+  materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+  contributors may be used to endorse or promote products
+  derived from this software without specific prior
+  written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+#include "GeometryUtils.h"
+
+#include <assimp/vector3.h>
+
+namespace Assimp {
+
+// ------------------------------------------------------------------------------------------------
+ai_real GeometryUtils::heron( ai_real a, ai_real b, ai_real c ) {
+    const ai_real s = (a + b + c) / 2;
+    const ai_real area = pow((s * ( s - a ) * ( s - b ) * ( s - c ) ), (ai_real)0.5 );
+    return area;
+}
+
+// ------------------------------------------------------------------------------------------------
+ai_real GeometryUtils::distance3D( const aiVector3D &vA, const aiVector3D &vB ) {
+    const ai_real lx = ( vB.x - vA.x );
+    const ai_real ly = ( vB.y - vA.y );
+    const ai_real lz = ( vB.z - vA.z );
+    const ai_real a = lx*lx + ly*ly + lz*lz;
+    const ai_real d = pow( a, (ai_real)0.5 );
+
+    return d;
+}
+
+// ------------------------------------------------------------------------------------------------
+ai_real GeometryUtils::calculateAreaOfTriangle( const aiFace& face, aiMesh* mesh ) {
+    ai_real area = 0;
+
+    const aiVector3D vA( mesh->mVertices[ face.mIndices[ 0 ] ] );
+    const aiVector3D vB( mesh->mVertices[ face.mIndices[ 1 ] ] );
+    const aiVector3D vC( mesh->mVertices[ face.mIndices[ 2 ] ] );
+
+    const ai_real a = distance3D( vA, vB );
+    const ai_real b = distance3D( vB, vC );
+    const ai_real c = distance3D( vC, vA );
+    area = heron( a, b, c );
+
+    return area;
+}
+
+// ------------------------------------------------------------------------------------------------
+// Check whether a ray intersects a plane and find the intersection point
+bool GeometryUtils::PlaneIntersect(const aiRay& ray, const aiVector3D& planePos, 
+        const aiVector3D& planeNormal, aiVector3D& pos) {
+    const ai_real b = planeNormal * (planePos - ray.pos);
+    ai_real h = ray.dir * planeNormal;
+    if ((h < 10e-5 && h > -10e-5) || (h = b/h) < 0)
+        return false;
+
+    pos = ray.pos + (ray.dir * h);
+    return true;
+}
+
+// ------------------------------------------------------------------------------------------------
+void GeometryUtils::normalizeVectorArray(aiVector3D *vectorArrayIn, aiVector3D *vectorArrayOut, 
+        size_t numVectors) {
+    for (size_t i=0; i<numVectors; ++i) {
+		    vectorArrayOut[i] = vectorArrayIn[i].Normalize();
+	  }
+}
+
+} // namespace Assimp