Posted by ahn on Dec 04, 2014; 4:46pm
URL: https://forum.jogamp.org/LIGHTING-On-the-Earth-model-tp4033709.html

Hi. I am trying to implement the Earth model.
I have already rendered the Earth model with texture.

now, I want to put lighting effect on the Earth but It never works.

Could anybody comment on my source code??

below is source code and screen shot for the result

public void display(GLAutoDrawable drawable) {
        //***************TEXTURE MAPPING***************//
        // Enables this texture's target in the current GL context's state.
        gl.glBegin(GL2.GL_TRIANGLES);
        for (Triangle t: theEarth.triangles) {
        gl.glNormal3d(t.a, t.b, t.c);        //surface normal of the triangle
       
        Vertex p0, p1, p2;
        p0 = theEarth.vertices[t.v0];
        p1 = theEarth.vertices[t.v1];
        p2 = theEarth.vertices[t.v2];
       
        gl.glTexCoord2d(p0.u, p0.v);
        gl.glVertex3d(p0.x, p0.y, p0.z);
       
        gl.glTexCoord2d(p1.u, p1.v);
        gl.glVertex3d(p1.x, p1.y, p1.z);
       
        gl.glTexCoord2d(p2.u, p2.v);
        gl.glVertex3d(p2.x, p2.y, p2.z);
       
        }
        gl.glEnd(); // of the tessellated sphere
      //***************TEXTURE MAPPING***************//

      //***************LIGHTING***************//                  <------- this part is not working :(
        // light to light up the scene. Ambient's value in RGBA
        float[] lightAmbientValue = {0.1f, 0.1f, 0.1f, 1.0f};
        // Diffuse light comes from a particular location. Diffuse's value in RGBA
        float[] lightDiffuseValue = {1.0f, 1.0f, 1.0f, 1.0f};
        // Diffuse light location xyz (in front of the screen).
        float lightDiffusePosition[] = {0.0f, 2.0f, 2.0f, 1.0f};
        gl.glLightfv(GL2.GL_LIGHT0, GL_AMBIENT, lightAmbientValue, 0);
        gl.glLightfv(GL2.GL_LIGHT0, GL_DIFFUSE, lightDiffuseValue, 0);
        gl.glLightfv(GL2.GL_LIGHT0, GL_POSITION, lightDiffusePosition, 0);
        gl.glEnable(GL2.GL_LIGHT0);
      //***************LIGHTING***************//

      //***************CAMERA MOVEMENT***************//
        gl.glLoadIdentity();  // reset the model-view matrix
        glu.gluLookAt(posX, posY, posZ, posX, 0, 0, 0, 1, 0);
      //***************CAMERA MOVEMENT***************//
}






Thanks for reading my message :)