/**
* Draw a vertex buffer with texture coordinates in a given gl mode. Vertex buffers coming from the
* createShapeBuffer() methods support both <code>GL.GL_TRIANGLE_FAN</code> and <code>GL.LINE_STRIP</code>.
*
* @param dc the current DrawContext.
* @param mode the desired drawing GL mode.
* @param count the number of vertices to draw.
* @param verts the vertex buffer to draw.
* @param coords the buffer containing the shape texture coordinates.
*/
public static void drawBuffer(DrawContext dc, int mode, int count, DoubleBuffer verts, DoubleBuffer coords)
{
if (dc == null)
{
String message = Logging.getMessage("nullValue.DrawContextIsNull");
Logging.logger().severe(message);
throw new ArgumentException(message);
}
if (verts == null || coords == null)
{
String message = Logging.getMessage("nullValue.BufferIsNull");
Logging.logger().severe(message);
throw new ArgumentException(message);
}
GL2 gl = dc.getGL().getGL2(); // GL initialization checks for GL2 compatibility.
// Set up
gl.glPushClientAttrib(GL2.GL_CLIENT_VERTEX_ARRAY_BIT);
gl.glEnableClientState(GL2.GL_VERTEX_ARRAY);
gl.glEnableClientState(GL2.GL_TEXTURE_COORD_ARRAY);
gl.glVertexPointer(2, GL2.GL_DOUBLE, 0, verts);
gl.glTexCoordPointer(2, GL2.GL_DOUBLE, 0, coords);
// Draw
gl.glDrawArrays(mode, 0, count);
// Restore
gl.glPopClientAttrib();
}
