Visually separate scene and child bbox

Author: einarf

demosys/scene/mesh.py

@@ -38,6 +38,7 @@ def draw_bbox(self, proj_matrix, view_matrix, shader, vao):
         shader.uniform_mat4("m_mv", view_matrix)
         shader.uniform_3fv("bb_min", self.bbox_min)
         shader.uniform_3fv("bb_max", self.bbox_max)
+        shader.uniform_3fv("color", [0.75, 0.75, 0.75])
         vao.draw()
 
     def calc_global_bbox(self, view_matrix, bbox_min, bbox_max):

demosys/scene/scene.py

@@ -38,16 +38,19 @@ def draw(self, m_proj, m_mv):
 
     def draw_bbox(self, m_proj, m_mv, all=True):
         """Draw scene and mesh bounding boxes"""
+        # Scene bounding box
         self.bbox_vao.bind(self.bbox_shader)
         self.bbox_shader.uniform_mat4("m_proj", m_proj)
         self.bbox_shader.uniform_mat4("m_mv", m_mv)
         self.bbox_shader.uniform_3fv("bb_min", self.bbox_min)
         self.bbox_shader.uniform_3fv("bb_max", self.bbox_max)
+        self.bbox_shader.uniform_3fv("color", [1.0, 0.0, 0.0])
         self.bbox_vao.draw()
 
         if not all:
             return
 
+        # Draw bounding box for children
         for node in self.root_nodes:
             node.draw_bbox(m_proj, m_mv, self.bbox_shader, self.bbox_vao)
 

demosys/scene/shaders/scene_default/bbox.glsl

@@ -17,10 +17,11 @@ void main() {
 #elif defined FRAGMENT_SHADER
 
 out vec4 fragColor;
+uniform vec3 color;
 
 void main()
 {
-    fragColor = vec4(1.0);
+    fragColor = vec4(color, 1.0);
 }
 
 #endif