[Racer-svn] SF.net SVN: racer:[80] trunk/racer_editor/View.cpp

[<jl...@us...>]

Revision: 80
          http://racer.svn.sourceforge.net/racer/?rev=80&view=rev
Author:   jlegg
Date:     2009-11-14 14:47:56 +0000 (Sat, 14 Nov 2009)

Log Message:
-----------
Show markers displaying up and forward direction of the vertices.

Modified Paths:
--------------
    trunk/racer_editor/View.cpp

Modified: trunk/racer_editor/View.cpp
===================================================================
--- trunk/racer_editor/View.cpp	2009-11-13 14:19:37 UTC (rev 79)
+++ trunk/racer_editor/View.cpp	2009-11-14 14:47:56 UTC (rev 80)
@@ -200,13 +200,15 @@
     return true;
 }
 
+inline void glVertex(const btVector3 & position)
+{
+    glVertex3f(position.x(), position.y(), position.z());
+}
+
 void View::draw_path(const Track::Path & path)
 {
-    glColor3f(1.0, 1.0, 1.0);
-    
-    
+    glPointSize(5.0);
     // draw lines between the vertices.
-    glColor3ub(255, 255, 255);
     typedef boost::graph_traits<Track::Path::Graph>::edge_iterator EdgeIterator;
     //typedef boost::graph_traits<Track::Path::Graph>::vertex_descriptor VertexDescriptor;
     std::pair<EdgeIterator, EdgeIterator> edge_range;
@@ -218,26 +220,25 @@
         Track::PathVertex vertex_2 = path.graph[target(*(edge_range.first), path.graph)];
         Track::PathEdge edge = path.graph[*(edge_range.first)];
         
+        glColor3ub(191, 191, 191);
         unsigned int count = edge.get_number_of_repetions();
         for (unsigned int i = 0; i < count; i++)
         {
             edge.get_graphics_mesh(i)->draw();
         }
         
+        glColor3ub(255, 255, 255);
         glBegin(GL_LINE_STRIP);
             for (float t = 0.0; t <= 1.0; t += 0.015625)
             {
-                btVector3 position = edge.get_transform(t).getOrigin();
-                glVertex3f(position.x(), position.y(), position.z());
+                glVertex(edge.get_transform(t).getOrigin());
             }
         glEnd();
     }
     
     // draw markers at the vertices.
     glClear(GL_DEPTH_BUFFER_BIT);
-    glColor3ub(255, 255, 0);
-    glPointSize(5.0);
-    glBegin(GL_POINTS);
+    btScalar length_scale = 64 / scale;
         /** @todo use marker size to draw a square around the point regardless
          * of hardware maximum point size. glPointSize is not guranteed to
          * support sizes other than 1, which is too small.
@@ -245,20 +246,36 @@
         //const float marker_size = 3.0;
         // float offset = scale * marker_size;
         
-        typedef boost::graph_traits<Track::Path::Graph>::vertex_iterator VertexIterator;
-        std::pair<VertexIterator, VertexIterator> vertex_range;
-        for (vertex_range = boost::vertices(path.graph);
-             vertex_range.first != vertex_range.second;
-             vertex_range.first++)
-        {
-            Track::PathVertex vertex = path.graph[*(vertex_range.first)];
-            btVector3 & position =  vertex.position;
-            float x = position.x();
-            float y = position.y();
-            float z = position.z();
-            glVertex3f(x, y, z);
-        }
+    typedef boost::graph_traits<Track::Path::Graph>::vertex_iterator VertexIterator;
+    std::pair<VertexIterator, VertexIterator> vertex_range;
+    for (vertex_range = boost::vertices(path.graph);
+         vertex_range.first != vertex_range.second;
+         vertex_range.first++)
+    {
+        const Track::PathVertex & vertex = path.graph[*(vertex_range.first)];
+        btVector3 up = vertex.position + length_scale * vertex.get_up();
+        btVector3 forward = vertex.position + length_scale * vertex.get_gradient();
+        glBegin(GL_LINES);
+            // line pointing up
+            glColor3ub(255, 0, 0);
+            glVertex(vertex.position);
+            glVertex(up);
+            // line pointing forward
+            glColor3ub(0, 255, 0);
+            glVertex(vertex.position);
+            glVertex(forward);
+        glEnd();
+        glBegin(GL_POINTS);
+            // up marker
+            glColor3ub(255, 0,   0  ); glVertex(up);
+            // forward marker
+            glColor3ub(0,   255, 0  ); glVertex(forward);
+            // vertex marker
+            glColor3ub(255, 255, 0  ); glVertex(vertex.position);
+        glEnd();
+    }
     glEnd();
+    glColor3ub(255, 255, 255);
 }
 
 bool View::on_button_press_event(GdkEventButton * event)


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