init versie

face.cpp

@@ -0,0 +1,70 @@
+#include "face.h"
+
+
+float Face::sign (QVector2D p1, QVector2D p2, QVector2D p3)
+{
+    return (p1.x() - p3.x()) * (p2.y() - p3.y()) - (p2.x() - p3.x()) * (p1.y() - p3.y());
+}
+
+bool Face::PointInFace (QVector2D pt)
+{
+    bool b1, b2, b3;
+
+    //b1 = sign(pt, v1, v2) < 0.0f;
+    //b2 = sign(pt, v2, v3) < 0.0f;
+   // b3 = sign(pt, v3, v1) < 0.0f;
+
+    return ((b1 == b2) && (b2 == b3));
+}
+
+Face::Face(Vertex *v1,TileVertexInfo *vi1,  Vertex *v2,TileVertexInfo *vi2,Vertex *v3,TileVertexInfo *vi3)
+{m_subface= NULL;
+    setSettings(v1,vi1,v2,vi2,v3,vi3);
+}
+
+void Face::setSettings(Vertex *v1, TileVertexInfo *vi1, Vertex *v2, TileVertexInfo *vi2, Vertex *v3, TileVertexInfo *vi3)
+{
+    m_v1 = v1;
+    m_v2 = v2;
+    m_v3 = v3;
+    m_vi1 = vi1;
+    m_vi2 = vi2;
+    m_vi3 = vi3;
+    recalcNormal();
+}
+
+void Face::recalcNormal()
+{
+    QVector3D v1=QVector3D(m_v1->position().x(),m_v1->position().y(),m_vi1->height());
+    QVector3D v2=QVector3D(m_v2->position().x(),m_v2->position().y(),m_vi2->height());
+    QVector3D v3=QVector3D(m_v3->position().x(),m_v3->position().y(),m_vi3->height());
+
+    QVector3D va = v1 - v2;
+    QVector3D vb = v3 - v2;
+    m_normal = QVector3D::crossProduct(va,vb);
+    /*float norm_len = sqrt(dot(norm, norm));
+    norm /= norm_len; */
+}
+
+QVector3D Face::normal()
+{
+    return m_normal;
+}
+
+void Face::findFaces(std::vector<Face *> &vec, QVector2D s)
+{
+    if (m_subface!=NULL) {
+        for (int i=0; i<4;i++) {
+            m_subface[i].findFaces(vec,s);
+        }
+    }
+    else {
+        if (
+                ((m_v1->position().x() == s.x()) && (m_v1->position().y() == s.y())) ||
+                ((m_v2->position().x() == s.x()) && (m_v2->position().y() == s.y())) ||
+                ((m_v3->position().x()== s.x()) && (m_v3->position().y() == s.y()))
+                ) {
+            vec.push_back(this);
+        }
+    }
+}