Improve comments

Merge two subsequent translations in draw(), add a lecture. Replace
gl.glColor3f by a call that explicitly names the use of black in
drawScene().

1 files changed, 3 insertions, 2 deletions

diff --git a/src/RobotRace.java b/src/RobotRace.java
index 5b8f6a7..a7fc2e7 100644
--- a/src/RobotRace.java
+++ b/src/RobotRace.java
@@ -223,7 +223,8 @@ public class RobotRace extends Base {
         // Enable lighting effects
         if (lightingEnabled) {
             float[] lightPos = {
-                // light position (slightly away from top-left corner)
+                // light position (slightly away from top-left corner of the
+                // camera (eye) point)
                 (float) camera.eye.x(),
                 (float) camera.eye.y() + 1f,
                 (float) camera.eye.z() - 1f,
@@ -256,7 +257,7 @@ public class RobotRace extends Base {
         gl.glClear(GL_DEPTH_BUFFER_BIT);
 
         // Set color to black.
-        gl.glColor3f(0f, 0f, 0f);
+        BetterBase.setColor(Color.BLACK);
 
         gl.glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);