Exemple #1
0
/**
 * Computes intesections of coplanars faces from object A with faces from object B.
 * @param mesh mesh that contains the faces, edges and vertices
 * @param facesA set of faces from object A
 * @param facesB set of faces from object B
 */
void BOP_sew(BOP_Mesh *mesh, BOP_Faces *facesA, BOP_Faces *facesB)
{
	for(unsigned int idxFaceB = 0; idxFaceB < facesB->size(); idxFaceB++) {
		BOP_Face *faceB = (*facesB)[idxFaceB];
		MT_Plane3 planeB = faceB->getPlane();
		MT_Point3 p1 = mesh->getVertex(faceB->getVertex(0))->getPoint();
		MT_Point3 p2 = mesh->getVertex(faceB->getVertex(1))->getPoint();
		MT_Point3 p3 = mesh->getVertex(faceB->getVertex(2))->getPoint();
		
		for(unsigned int idxFaceA = 0;
			idxFaceA < facesA->size() &&
			faceB->getTAG() != BROKEN &&
			faceB->getTAG() != PHANTOM;
			idxFaceA++) {
			BOP_Face *faceA = (*facesA)[idxFaceA];
			if ((faceA->getTAG() != BROKEN)&&(faceA->getTAG() != PHANTOM)) {
				MT_Plane3 planeA = faceA->getPlane();
				if (BOP_containsPoint(planeA,p1) && 
					BOP_containsPoint(planeA,p2) && 
					BOP_containsPoint(planeA,p3)) {
					if (BOP_orientation(planeA,planeB) > 0) {
						BOP_intersectCoplanarFaces(mesh,facesA,faceB,faceA,true);
					}
				}
			}
		}
	}
}
Exemple #2
0
/**
 * Removes faces from facesB that are overlapped with anyone from facesA.
 * @param mesh mesh that contains the faces, edges and vertices
 * @param facesA set of faces from object A
 * @param facesB set of faces from object B
 */
void BOP_removeOverlappedFaces(BOP_Mesh *mesh,  BOP_Faces *facesA,  BOP_Faces *facesB)
{
	for(unsigned int i=0;i<facesA->size();i++) {
		BOP_Face *faceI = (*facesA)[i];       
		if (faceI->getTAG()==BROKEN) continue;
		bool overlapped = false;
		MT_Point3 p1 = mesh->getVertex(faceI->getVertex(0))->getPoint();
		MT_Point3 p2 = mesh->getVertex(faceI->getVertex(1))->getPoint();
		MT_Point3 p3 = mesh->getVertex(faceI->getVertex(2))->getPoint();
		for(unsigned int j=0;j<facesB->size();) {
			BOP_Face *faceJ = (*facesB)[j];
			if (faceJ->getTAG()!=BROKEN) {
			  MT_Plane3 planeJ = faceJ->getPlane();
			  if (BOP_containsPoint(planeJ,p1) && BOP_containsPoint(planeJ,p2) 
			      && BOP_containsPoint(planeJ,p3)) {
			    MT_Point3 q1 = mesh->getVertex(faceJ->getVertex(0))->getPoint();
			    MT_Point3 q2 = mesh->getVertex(faceJ->getVertex(1))->getPoint();
			    MT_Point3 q3 = mesh->getVertex(faceJ->getVertex(2))->getPoint();
			    if (BOP_overlap(MT_Vector3(planeJ.x(),planeJ.y(),planeJ.z()),
					    p1,p2,p3,q1,q2,q3)) {
			      facesB->erase(facesB->begin()+j,facesB->begin()+(j+1));
			      faceJ->setTAG(BROKEN);
			      overlapped = true;
			    }
			    else j++;
			  }
			  else j++;
			}else j++;
		}
		if (overlapped) faceI->setTAG(OVERLAPPED);
	}
}
Exemple #3
0
/**
 * Preprocess to filter no collisioned faces.
 * @param meshC Input & Output mesh data
 * @param faces Faces list to test
 * @param bsp BSP tree used to filter
 */
void BOP_meshFilter(BOP_Mesh* meshC, BOP_Faces* faces, BOP_BSPTree* bsp)
{
	BOP_IT_Faces it;
	BOP_TAG tag;
	
	it = faces->begin();
	while (it!=faces->end()) {
		BOP_Face *face = *it;
		MT_Point3 p1 = meshC->getVertex(face->getVertex(0))->getPoint();
		MT_Point3 p2 = meshC->getVertex(face->getVertex(1))->getPoint();
		MT_Point3 p3 = meshC->getVertex(face->getVertex(2))->getPoint();
		if ((tag = bsp->classifyFace(p1,p2,p3,face->getPlane()))==OUT||tag==OUTON) {
			face->setTAG(BROKEN);
			it = faces->erase(it);
		}
		else if (tag == IN) {
			it = faces->erase(it);
		}else{
		  it++;
		}
	}
}
Exemple #4
0
void BOP_Face2Face(BOP_Mesh *mesh, BOP_Faces *facesA, BOP_Faces *facesB)
{
	for(unsigned int idxFaceA=0;idxFaceA<facesA->size();idxFaceA++) {
		BOP_Face *faceA = (*facesA)[idxFaceA];
		MT_Plane3 planeA = faceA->getPlane();
		MT_Point3 p1 = mesh->getVertex(faceA->getVertex(0))->getPoint();
		MT_Point3 p2 = mesh->getVertex(faceA->getVertex(1))->getPoint();
		MT_Point3 p3 = mesh->getVertex(faceA->getVertex(2))->getPoint();

	/* get (or create) bounding box for face A */
		if( faceA->getBBox() == NULL )
        	faceA->setBBox(p1,p2,p3);
		BOP_BBox *boxA = faceA->getBBox();

	/* start checking B faces with the previously stored split index */

		for(unsigned int idxFaceB=faceA->getSplit();
			idxFaceB<facesB->size() && (faceA->getTAG() != BROKEN) && (faceA->getTAG() != PHANTOM);) {
			BOP_Face *faceB = (*facesB)[idxFaceB];
			faceA->setSplit(idxFaceB);
			if ((faceB->getTAG() != BROKEN) && (faceB->getTAG() != PHANTOM)) {

	/* get (or create) bounding box for face B */
				if( faceB->getBBox() == NULL )
        			faceB->setBBox(mesh->getVertex(faceB->getVertex(0))->getPoint(),
                    mesh->getVertex(faceB->getVertex(1))->getPoint(),
                    mesh->getVertex(faceB->getVertex(2))->getPoint());
			  BOP_BBox *boxB = faceB->getBBox();

			  if (boxA->intersect(*boxB)) {
			    MT_Plane3 planeB = faceB->getPlane();
			    if (BOP_containsPoint(planeB,p1) && 
				BOP_containsPoint(planeB,p2) && 
				BOP_containsPoint(planeB,p3)) {
			      if (BOP_orientation(planeB,planeA)>0) {
				    BOP_intersectCoplanarFaces(mesh,facesB,faceA,faceB,false);
			      }
			    }
			    else {
			      BOP_intersectNonCoplanarFaces(mesh,facesA,facesB,faceA,faceB);
			    }
			  }			  
			}
			idxFaceB++;
		}
	}
	
	
	// Clean broken faces from facesA
	BOP_IT_Faces it;
	it = facesA->begin();
	while (it != facesA->end()) {
		BOP_Face *face = *it;
		if (face->getTAG() == BROKEN) it = facesA->erase(it);
		else it++;
	}
	/*
	it = facesB->begin();
	while (it != facesB->end()) {
		BOP_Face *face = *it;
		if (face->getTAG() == BROKEN) it = facesB->erase(it);
		else it++;
	}
	*/
}