SimpleLwJglRenderingEngine.java

package de.gaalop.visualizer.engines.lwjgl;

import de.gaalop.visualizer.Point3d;
import de.gaalop.visualizer.PointCloud;
import de.gaalop.visualizer.PointClouds;
import de.gaalop.visualizer.Rendering;
import java.util.HashMap;
import java.util.HashSet;
import org.lwjgl.opengl.GL11;
import org.lwjgl.util.glu.Sphere;

/**
 * Implements a simple drawing of the points
 * @author Christian Steinmetz
 */
public class SimpleLwJglRenderingEngine extends LwJglRenderingEngine {
    
    public SimpleLwJglRenderingEngine(String lwJglNativePath, Rendering rendering) {
        super(lwJglNativePath, rendering);
    }

   @Override
   public void draw(HashMap<String, PointCloud> clouds, HashSet<String> visibleObjects, PointClouds loadedClouds) {
    
            if (clouds == null) return;
            
            //draw axes
            GL11.glBegin(GL11.GL_LINES);
            GL11.glColor4d(1,0,0,0);//Red
            GL11.glVertex3d(0, 0, 0);
            GL11.glVertex3d(1, 0, 0);
            GL11.glColor4d(0,1,0,0);//Green
            GL11.glVertex3d(0, 0, 0);
            GL11.glVertex3d(0, 1, 0);
            GL11.glColor4d(0,0,1,0);//Blue
            GL11.glVertex3d(0, 0, 0);
            GL11.glVertex3d(0, 0, 1);
            GL11.glEnd();
            
            for (String cloud: clouds.keySet()) 
                if (visibleObjects.contains(cloud))
                {
                     paintPointCloud(clouds.get(cloud));
                }
            
            for (PointCloud cloud: loadedClouds.values())
                paintPointCloud(cloud);
            
    }

    private void paintPointCloud(PointCloud pointCloud) {
        Sphere s = new Sphere();
        //Use the color
        GL11.glColor4d(pointCloud.color.getRed()/255.0d, pointCloud.color.getGreen()/255.0d, pointCloud.color.getBlue()/255.0d, pointCloud.color.getAlpha()/255.0d);

        for (Point3d p: pointCloud.points) {
            GL11.glPushMatrix();
            GL11.glTranslated(p.x,p.y,p.z);
            s.draw(0.04f, 3, 3);
            GL11.glPopMatrix();
        }
    }
}