In cvs is jme and jmetest source. The tests now use simple game which sets up the camera and everything for you. So it might not help to explain your problem. I’ll post an old test here that builds a simple triangle and renders it:
/*
* Copyright (c) 2003, jMonkeyEngine - Mojo Monkey Coding All rights reserved.
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* Redistributions of source code must retain the above copyright notice, this
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* Redistributions in binary form must reproduce the above copyright notice,
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* names of its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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package jmetest.renderer;
import com.jme.app.BaseGame;
import com.jme.bounding.BoundingSphere;
import com.jme.math.Vector3f;
import com.jme.renderer.ColorRGBA;
import com.jme.renderer.Camera;
import com.jme.scene.Node;
import com.jme.scene.TriMesh;
import com.jme.system.DisplaySystem;
import com.jme.system.JmeException;
/**
* Test for trimesh part of the renderer.
*
* @author Mark Powell
*/
public class TestLWJGLRendererTriMesh extends BaseGame {
private TriMesh t;
private Camera cam;
private Node scene;
/**
* Entry point for the test,
*
* @param args
*/
public static void main(String[] args) {
TestLWJGLRendererTriMesh app = new TestLWJGLRendererTriMesh();
app.setDialogBehaviour(ALWAYS_SHOW_PROPS_DIALOG);
app.start();
}
/**
* Not used in this test.
*
* @see com.jme.app.SimpleGame#update()
*/
protected void update(float interpolation) {
}
/**
* clears the buffers and then draws the TriMesh.
*
* @see com.jme.app.SimpleGame#render()
*/
protected void render(float interpolation) {
display.getRenderer().clearBuffers();
display.getRenderer().draw(scene);
}
/**
* creates the displays and sets up the viewport.
*
* @see com.jme.app.SimpleGame#initSystem()
*/
protected void initSystem() {
try {
display = DisplaySystem.getDisplaySystem(properties.getRenderer());
display.createWindow(properties.getWidth(), properties
.getHeight(), properties.getDepth(), properties
.getFreq(), properties.getFullscreen());
cam = display.getRenderer().getCamera(properties.getWidth(),
properties.getHeight());
} catch (JmeException e) {
e.printStackTrace();
System.exit(1);
}
ColorRGBA blueColor = new ColorRGBA();
blueColor.r = 0;
blueColor.g = 0;
display.getRenderer().setBackgroundColor(blueColor);
cam.setFrustum(1.0f, 1000.0f, -0.55f, 0.55f, 0.4125f, -0.4125f);
Vector3f loc = new Vector3f(4.0f, 0.0f, 0.0f);
Vector3f left = new Vector3f(0.0f, -1.0f, 0.0f);
Vector3f up = new Vector3f(0.0f, 0.0f, 1.0f);
Vector3f dir = new Vector3f(-1.0f, 0f, 0.0f);
cam.setFrame(loc, left, up, dir);
display.getRenderer().setCamera(cam);
}
/**
* builds the trimesh.
*
* @see com.jme.app.SimpleGame#initGame()
*/
protected void initGame() {
Vector3f[] verts = new Vector3f[3];
ColorRGBA[] color = new ColorRGBA[3];
verts[0] = new Vector3f();
verts[0].x = -50;
verts[0].y = 0;
verts[0].z = 0;
verts[1] = new Vector3f();
verts[1].x = -50;
verts[1].y = 25;
verts[1].z = 25;
verts[2] = new Vector3f();
verts[2].x = -50;
verts[2].y = 25;
verts[2].z = 0;
color[0] = new ColorRGBA();
color[0].r = 1;
color[0].g = 0;
color[0].b = 0;
color[0].a = 1;
color[1] = new ColorRGBA();
color[1].r = 0;
color[1].g = 1;
color[1].b = 0;
color[1].a = 1;
color[2] = new ColorRGBA();
color[2].r = 0;
color[2].g = 0;
color[2].b = 1;
color[2].a = 1;
int[] indices = { 0, 1, 2};
t = new TriMesh("Triangle", verts, null, color, null, indices);
t.setModelBound(new BoundingSphere());
t.updateModelBound();
System.out.println(t.getModelBound());
cam.update();
scene = new Node("3D Scene Node");
scene.attachChild(t);
cam.update();
scene.updateGeometricState(0.0f, true);
}
/**
* not used.
*
* @see com.jme.app.SimpleGame#reinit()
*/
protected void reinit() {
}
/**
* Not used.
*
* @see com.jme.app.SimpleGame#cleanup()
*/
protected void cleanup() {
}
}
Maybe that will help.
