用poly2tri库来完成任意多边形三角化，从而在游戏中转化成刚体和渲染图片

来源：互联网发布：荣耀8支持4g十网络吗编辑：程序博客网时间：2024/05/02 13:24

b2BodyDef TriangleBodyDef;TriangleBodyDef.type = b2_dynamicBody;TriangleBodyDef.position.Set(0,0);b2Body *Triangle = world->CreateBody(&TriangleBodyDef); b2FixtureDef sd2;sd2.density = 2.0f;sd2.restitution = 0.2;p2t::CDT cdt(polyes);cdt.Triaresultingngulate();//get the  trianglesvector<p2t::Triangle*> tris = cdt.GetTriangles();for (size_t t = 0; t < tris.size(); t++) {p2t::Triangle* tri = tris[t];b2Vec2 vertices[3];b2PolygonShape TriangleShapeDef;for (int i = 0; i < 3; i++) {vertices[i].x = tri->GetPoint(i)->x/PTM_RATIO;vertices[i].y = tri->GetPoint(i)->y/PTM_RATIO;}TriangleShapeDef.Set(vertices, 3);sd2.shape = &TriangleShapeDef;Triangle->CreateFixture(&sd2);}Triangle->SetUserData(filledPolygon);

开源库下载地址：https://code.google.com/p/poly2tri/

vector<p2t::Point *> HelloWorld::tools_toPoint(vector<CCPoint> temp){vector<p2t::Point *> p2tPoints;for (int i = 0; i < temp.size(); i++){p2tPoints.push_back(new p2t::Point(temp[i].x, temp[i].y));}return p2tPoints;}

vector<p2t::Point *> HelloWorld::tools_toPoint(vector<CCPoint> temp){vector<p2t::Point *> p2tPoints;for (int i = 0; i < temp.size(); i++){p2tPoints.push_back(new p2t::Point(temp[i].x, temp[i].y));}return p2tPoints;}