Make points transparent

1 files changed, 5 insertions, 2 deletions

diff --git a/pointcloud.cpp b/pointcloud.cpp
index d762366..3bdccce 100644
--- a/pointcloud.cpp
+++ b/pointcloud.cpp
@@ -46,6 +46,9 @@ PointCloud::PointCloud(size_t num_points) :
     glMatrixMode(GL_PROJECTION);
     glLoadIdentity();
     gluPerspective(6,(double)640/480,1,1000);
+
+    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+    glEnable(GL_BLEND);
 }
 
 // Not really a border, but you get the idea
@@ -172,11 +175,11 @@ void PointCloud::draw()
             0.5,0.5,0,
             0,1,0);
 
-    glPointSize(4.0);
+    glPointSize(3.0);
 
     glBegin(GL_POINTS);
     for (size_t n = 0; n < v.size(); n++){
-        glColor3ub(v[n].r, v[n].g, v[n].b);
+        glColor4ub(v[n].r, v[n].g, v[n].b, 50);
         glVertex3d(v[n].x, v[n].y, v[n].z);
     }
     glEnd();