public void pop(GL2 gl)
{
if (this.attribsPushed)
{
gl.PopAttrib();
this.attribsPushed = false;
}
if (this.clientAttribsPushed)
{
gl.PopClientAttrib();
this.clientAttribsPushed = false;
}
if (this.modelviewPushed)
{
gl.MatrixMode(GL2.GL_MODELVIEW);
gl.PopMatrix();
this.modelviewPushed = false;
}
if (this.projectionPushed)
{
gl.MatrixMode(GL2.GL_PROJECTION);
gl.PopAttrib();
this.projectionPushed = false;
}
if (this.texturePushed)
{
gl.MatrixMode(GL2.GL_TEXTURE);
gl.PopMatrix();
this.texturePushed = false;
}
}
/**
* Removes the model-view matrix on top of the matrix stack, and restores the original matrix.
*
* @param dc the current World Wind drawing context on which the original matrix will be restored.
*
* @throws ArgumentException if <code>dc</code> is null, or if the <code>Globe</code> or <code>GL</code>
* instances in <code>dc</code> are null.
*/
public void popReferenceCenter(DrawContext dc)
{
if (dc == null)
{
String message = Logging.getMessage("nullValue.DrawContextIsNull");
Logging.logger().severe(message);
throw new ArgumentException(message);
}
if (dc.getGL() == null)
{
String message = Logging.getMessage("nullValue.DrawingContextGLIsNull");
Logging.logger().severe(message);
throw new IllegalStateException(message);
}
GL2 gl = dc.getGL().getGL2(); // GL initialization checks for GL2 compatibility.
// Store the current matrix-mode state.
OGLStackHandler ogsh = new OGLStackHandler();
try
{
ogsh.pushAttrib(gl, GL2.GL_TRANSFORM_BIT);
gl.MatrixMode(GL2.GL_MODELVIEW);
// Pop the top model-view matrix.
gl.PopMatrix();
}
finally
{
ogsh.pop(gl);
}
}
