--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/linetypes/quadrilateral.cpp Tue Feb 14 15:21:34 2017 +0200
@@ -0,0 +1,71 @@
+/*
+ * LDForge: LDraw parts authoring CAD
+ * Copyright (C) 2013 - 2017 Teemu Piippo
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "quadrilateral.h"
+
+LDQuadrilateral::LDQuadrilateral(Model *model) :
+ LDObject {model} {}
+
+LDQuadrilateral::LDQuadrilateral(const Vertex& v1, const Vertex& v2, const Vertex& v3, const Vertex& v4, Model* model) :
+ LDObject {model}
+{
+ setVertex(0, v1);
+ setVertex(1, v2);
+ setVertex(2, v3);
+ setVertex(3, v4);
+}
+
+int LDQuadrilateral::numVertices() const
+{
+ return 4;
+}
+
+QString LDQuadrilateral::typeName() const
+{
+ return "quad";
+}
+
+QString LDQuadrilateral::asText() const
+{
+ QString result = format("4 %1", color());
+
+ for (int i = 0; i < 4; ++i)
+ result += format(" %1", vertex(i));
+
+ return result;
+}
+
+int LDQuadrilateral::triangleCount() const
+{
+ return 2;
+}
+
+void LDQuadrilateral::invert()
+{
+ // Quad: 0 -> 1 -> 2 -> 3
+ // reversed: 0 -> 3 -> 2 -> 1
+ // Thus, we swap 1 and 3.
+ Vertex temp = vertex(1);
+ setVertex(1, vertex(3));
+ setVertex(3, temp);
+}
+
+LDObjectType LDQuadrilateral::type() const
+{
+ return SubclassType;
+}
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