Java Code Examples for com.jogamp.opengl.GL2#glPopName()

public void render(GL2 gl2) {
	super.render(gl2);
	gl2.glPushName(getPickName());
	gl2.glPushMatrix();

	Vector3d p = getPosition();
	gl2.glTranslated(p.x, p.y, p.z);
	Draw_Head(gl2);
	Draw_Legs(gl2);
	Draw_Body(gl2);
	gl2.glPopMatrix();
	gl2.glPopName();
}
 

/**
 * Draw a node.
 */
@Override
public boolean apply(NodeRenderingProperty property) {
  if (!property.isVisible) {
    return false;
  }
  GL2 gl = scene.gl;
  gl.glPushMatrix();
  gl.glPushName(property.shapeId);

  // move
  property.shape.setTranslation(property.positionX * GLConstants.FACTOR,
      property.positionY * GLConstants.FACTOR, 0f);

  // scale
  property.shape.setScale(property.size,
      property.size * property.ratio, property.size);

  // fill the shape
  if (property.isFilled) {
    gl.glColor4f(property.fillColor.getRed() / 255f,
        property.fillColor.getGreen() / 255f,
        property.fillColor.getBlue() / 255f,
        property.fillColor.getAlpha() / 255f);
    property.shape.fill(gl);
  }

  // draw the border
  if (property.strokeWidth > 0.0f) {
    gl.glLineWidth(property.strokeWidth);
    gl.glColor4f(property.strokeColor.getRed() / 255f,
        property.strokeColor.getGreen() / 255f,
        property.strokeColor.getBlue() / 255f,
        property.strokeColor.getAlpha() / 255f);
    property.shape.draw(gl);
  }

  Rectangle2D bounds = property.shape.getDrawingBounds();
  updateDrawingBounds(bounds);

  // we don't want the label to be clickable,
  // so we just pop the name before drawing it.
  gl.glPopName();

  // draw the label
  if (property.isTextVisible) {
    paintLabel(property);
  }

  // draw a little "+" on the top right corner of the node if it has
  // nodes collapsed under.
  if (property.hasCollapsedNodeUnder) {
    double centerX = property.positionX+property.size/2;
    double centerY = property.positionY+property.size/2;
    double halfWidth = 0.7;
    double halfHeight = 4;
    gl.glBegin(GL2.GL_QUADS);
    gl.glColor4f(1f, 1f, 1f, 0.5f);
    // vertical line
    gl.glVertex2d(centerX - halfWidth, centerY + halfHeight);
    gl.glVertex2d(centerX + halfWidth, centerY + halfHeight);
    gl.glVertex2d(centerX + halfWidth, centerY - halfHeight);
    gl.glVertex2d(centerX - halfWidth, centerY - halfHeight);
    // left part of horizontal line
    gl.glVertex2d(centerX - halfHeight, centerY + halfWidth);
    gl.glVertex2d(centerX - halfWidth, centerY + halfWidth);
    gl.glVertex2d(centerX - halfWidth, centerY - halfWidth);
    gl.glVertex2d(centerX - halfHeight, centerY - halfWidth);
    // right part.
    gl.glVertex2d(centerX + halfWidth, centerY + halfWidth);
    gl.glVertex2d(centerX + halfHeight, centerY + halfWidth);
    gl.glVertex2d(centerX + halfHeight, centerY - halfWidth);
    gl.glVertex2d(centerX + halfWidth, centerY - halfWidth);
    gl.glVertex3d(0, 0, 0);
    gl.glEnd();
  }

  gl.glPopMatrix();

  return true;
}
 

/**
   * Use glRenderMode(GL_SELECT) to ray pick the item under the cursor.
   * https://github.com/sgothel/jogl-demos/blob/master/src/demos/misc/Picking.java
   * http://web.engr.oregonstate.edu/~mjb/cs553/Handouts/Picking/picking.pdf
   * @param gl2 the openGL render context
   */
  protected int findItemUnderCursor(GL2 gl2) {
  	// select buffer
  	IntBuffer pickBuffer = Buffers.newDirectIntBuffer(SELECT_BUFFER_SIZE);
  	// set up the buffer that will hold the names found under the cursor in furthest to closest.
      gl2.glSelectBuffer(SELECT_BUFFER_SIZE, pickBuffer);

      // change the render mode
gl2.glRenderMode( GL2.GL_SELECT );
// wipe the select buffer
gl2.glInitNames();

viewport.renderPick(gl2,pickX,pickY);

      gl2.glPushName(0);

      // render in selection mode, without advancing time in the simulation.
      scene.render(gl2);

      gl2.glPopName();

      gl2.glFlush();
      
      // get the picking results and return the render mode to the default 
      int hits = gl2.glRenderMode( GL2.GL_RENDER );

      boolean verbose=false;
      
if(verbose) Log.message("\n"+hits+" PICKS @ "+pickX+","+pickY);
      float z1,z2;

      float zMinBest = Float.MAX_VALUE;
  	int i, j, index=0, nameCount, pickName=0, bestPickName=0;
  	
  	for(i=0;i<hits;++i) {
  		nameCount=pickBuffer.get(index++);
  		z1 = (float) (pickBuffer.get(index++) & 0xffffffffL) / (float)0x7fffffff;
  		z2 = (float) (pickBuffer.get(index++) & 0xffffffffL) / (float)0x7fffffff;
  		
  		if(verbose) {
  			Log.message("  names="+nameCount+" zMin="+z1+" zMax="+z2);
  		}
  		String add=": ";
  		
	for(j=0;j<nameCount;++j) {
  			pickName = pickBuffer.get(index++);
      		if(verbose) {
      			Log.message(add+pickName);
          		add=", ";
      		}
	}
	if(nameCount>0) {
		//pickName = pickBuffer.get(index++);
		if(verbose) Log.message(add+" BEST="+pickName);
      		if(zMinBest > z1) {
      			zMinBest = z1;
      			bestPickName = pickName;
      		}
  		}
  	}
  	return bestPickName;
  }