1 files changed, 25 insertions, 24 deletions

diff --git a/src/animate.cpp b/src/animate.cpp
index a24f0f2..4f10e0a 100644
--- a/src/animate.cpp
+++ b/src/animate.cpp
@@ -135,22 +135,22 @@ void animate::post_fracture(network &n) {
     switch (key) {
       case 's' :
         for (auto edge : crack) {
-         glBegin(GL_TRIANGLES);
           glColor3f(1.0f, 0.0f, 0.0f);
-          glVertex2d(n.G.dual_vertices[n.G.dual_edges[edge].v[0]].polygon[0].x, n.G.dual_vertices[n.G.dual_edges[edge].v[0]].polygon[0].y);
-          glVertex2d(n.G.dual_vertices[n.G.dual_edges[edge].v[0]].polygon[1].x, n.G.dual_vertices[n.G.dual_edges[edge].v[0]].polygon[1].y);
-          glVertex2d(n.G.dual_vertices[n.G.dual_edges[edge].v[0]].polygon[2].x, n.G.dual_vertices[n.G.dual_edges[edge].v[0]].polygon[2].y);
-
-          glVertex2d(n.G.dual_vertices[n.G.dual_edges[edge].v[1]].polygon[0].x, n.G.dual_vertices[n.G.dual_edges[edge].v[1]].polygon[0].y);
-          glVertex2d(n.G.dual_vertices[n.G.dual_edges[edge].v[1]].polygon[1].x, n.G.dual_vertices[n.G.dual_edges[edge].v[1]].polygon[1].y);
-          glVertex2d(n.G.dual_vertices[n.G.dual_edges[edge].v[1]].polygon[2].x, n.G.dual_vertices[n.G.dual_edges[edge].v[1]].polygon[2].y);
+         glBegin(GL_POLYGON);
+          for (const graph::coordinate &r : n.G.dual_vertices[n.G.dual_edges[edge].v[0]].polygon) {
+            glVertex2d(r.x, r.y);
+          }
+          glEnd();
+         glBegin(GL_POLYGON);
+          for (const graph::coordinate &r : n.G.dual_vertices[n.G.dual_edges[edge].v[1]].polygon) {
+            glVertex2d(r.x, r.y);
+          }
           glEnd();
         }
         glFlush();
         break;
 
       case 'c' :
-        glBegin(GL_TRIANGLES);          // Each set of 3 vertices form a triangle
         for (unsigned int i = 0; i < num; i++) {
           if (i == crack_component) {
             glColor3d(1.0, 0.0, 0.0);
@@ -159,17 +159,17 @@ void animate::post_fracture(network &n) {
           }
 
           for (auto it = components[i].begin(); it != components[i].end(); it++) {
-            glVertex2d(n.G.dual_vertices[*it].polygon[0].x, n.G.dual_vertices[*it].polygon[0].y);
-            glVertex2d(n.G.dual_vertices[*it].polygon[1].x, n.G.dual_vertices[*it].polygon[1].y);
-            glVertex2d(n.G.dual_vertices[*it].polygon[2].x, n.G.dual_vertices[*it].polygon[2].y);
+        glBegin(GL_POLYGON);          // Each set of 3 vertices form a triangle
+            for (const graph::coordinate &r: n.G.dual_vertices[*it].polygon) {
+              glVertex2d(r.x, r.y);
+            }
+        glEnd();
           }
         }
-        glEnd();
         glFlush();
         break;
 
       case 'C' :
-        glBegin(GL_TRIANGLES);          // Each set of 3 vertices form a triangle
         for (unsigned int i = 0; i < num; i++) {
           if (components[i].size() > 1) {
             if (i == crack_component) {
@@ -179,25 +179,26 @@ void animate::post_fracture(network &n) {
             }
 
             for (auto it = components[i].begin(); it != components[i].end(); it++) {
-              glVertex2d(n.G.dual_vertices[*it].polygon[0].x, n.G.dual_vertices[*it].polygon[0].y);
-              glVertex2d(n.G.dual_vertices[*it].polygon[1].x, n.G.dual_vertices[*it].polygon[1].y);
-              glVertex2d(n.G.dual_vertices[*it].polygon[2].x, n.G.dual_vertices[*it].polygon[2].y);
+        glBegin(GL_POLYGON);          // Each set of 3 vertices form a triangle
+              for (const graph::coordinate &r :n.G.dual_vertices[*it].polygon) {
+                glVertex2d(r.x, r.y);
+              }
+        glEnd();
             }
           }
         }
-        glEnd();
         glFlush();
         break;
 
       case 'm' :
-        glBegin(GL_TRIANGLES);
-        glColor3d(1.0, 0.0, 0.0);
         for (auto it = components[crack_component].begin(); it != components[crack_component].end(); it++) {
-          glVertex2d(n.G.dual_vertices[*it].polygon[0].x, n.G.dual_vertices[*it].polygon[0].y);
-          glVertex2d(n.G.dual_vertices[*it].polygon[1].x, n.G.dual_vertices[*it].polygon[1].y);
-          glVertex2d(n.G.dual_vertices[*it].polygon[2].x, n.G.dual_vertices[*it].polygon[2].y);
-        }
+        glBegin(GL_POLYGON);
+        glColor3d(1.0, 0.0, 0.0);
+          for (const graph::coordinate &r :n.G.dual_vertices[*it].polygon) {
+            glVertex2d(r.x, r.y);
+          }
         glEnd();
+        }
         glFlush();
     }
   }