1 files changed, 114 insertions, 0 deletions
diff --git a/demos/MiscDemos/gearsOffScreen2Tga.java b/demos/MiscDemos/gearsOffScreen2Tga.java
new file mode 100644
index 0000000..21ed42f
--- /dev/null
+++ b/demos/MiscDemos/gearsOffScreen2Tga.java
@@ -0,0 +1,114 @@
+/**
+ * @(#) gearsOffScreen2Tga.java
+ * @(#) author: Brian Paul (converted to Java by Ron Cemer and Sven Goethel)
+ *
+ * This version is equal to Brian Paul's version 1.2 1999/10/21
+ */
+
+import java.applet.*;
+import java.awt.*;
+import java.awt.event.*;
+import java.lang.*;
+import java.util.*;
+import java.io.*;
+import gl4java.*;
+import gl4java.drawable.*;
+import gl4java.awt.*;
+import gl4java.utils.textures.*;
+
+public class gearsOffScreen2Tga 
+{
+	GLOffScreenDrawable canvas;
+
+	public void snapshot()
+	{
+		canvas = new GLOffScreenDrawable(new Dimension(400,400));
+
+		gearRenderer gear = new gearRenderer(true);
+		canvas.addGLEventListener(gear);
+
+		canvas.initDrawable();
+
+		if(canvas.cvsIsInit())
+		{
+			canvas.repaint();
+			GLContext glj = canvas.getGLContext();
+
+			if( glj.gljMakeCurrent() )
+			{
+				TGATextureGrabber textgrab = 
+					new TGATextureGrabber(canvas.getGL());
+				textgrab.grabPixels(
+				    glj.isDoubleBuffer()?GLEnum.GL_BACK:GLEnum.GL_FRONT,
+				    0, 0, 
+				    canvas.getSize().width, 
+				    canvas.getSize().height);
+				textgrab.write2File("gears.tga");
+				System.out.println("written gears.tga");
+				glj.gljCheckGL();
+				glj.gljFree();
+			}
+		}
+	}
+
+	public static void main( String args[] ) 
+	{
+		int i = 0;
+		String gljLib = null;
+		String glLib = null;
+		String gluLib = null;
+
+	        GLContext.gljNativeDebug = false;
+	        GLContext.gljClassDebug = false;
+	        GLContext.gljThreadDebug = false;
+
+		while(args.length>i)
+		{
+			if(args[i].equals("-gljLib"))
+			{
+				i++;
+				if(args.length>i)
+					gljLib=args[i];
+			} else if(args[i].equals("-glLib"))
+			{
+				i++;
+				if(args.length>i)
+					glLib=args[i];
+			} else if(args[i].equals("-gluLib"))
+			{
+				i++;
+				if(args.length>i)
+					gluLib=args[i];
+			} else {
+			  System.out.println("illegal arg "+i+": "+args[i]);
+			}
+			i++;
+		}
+
+		GLContext.doLoadNativeLibraries(gljLib, glLib, gluLib);
+
+		/**
+		 * yes .. we need an AWT Frame,
+		 * to let java get in touch with the underlying 
+		 * windowing system for initialisation !
+		 */
+		Frame mainFrame = new Frame("gears offscreen");
+
+		Dimension ps = new Dimension(20,20);
+		mainFrame.setBounds(-100,-100,99,99);
+		mainFrame.setVisible(true);
+		mainFrame.setVisible(false);
+		mainFrame.setVisible(true);
+		Insets is = mainFrame.getInsets();
+		mainFrame.setBounds(0,0,
+			    ps.width+is.left+is.right, 
+		            ps.height+is.top+is.bottom);
+		mainFrame.setVisible(true);
+
+		gearsOffScreen2Tga applet = new gearsOffScreen2Tga();
+		applet.snapshot();
+
+		mainFrame.dispose();
+		System.exit(0);
+	}
+}