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Remove them from the matrix and feed them into translate() (maybe after some required transformation between spaces).
You can convert the matrices by simply rotating by PI around X. I've no idea if that fixes the problem though. It's a bit unlucky that QCAR returns a model view matrix. The camera's matrix is actually the rotational part of the view matrix. The model matrix is the one that transforms the object. Both combined are the modelview matrix, but that's actually not what the camera should contain. If done correctly, it'll work though...but it's still not the right way...
world = new World();
world.setAmbientLight(20, 20, 20);
sun = new Light(world);
sun.setIntensity(250, 250, 250);
cube = Primitives.getCube(1);
cube.calcTextureWrapSpherical();
cube.strip();
cube.build();
world.addObject(cube);
cam = world.getCamera();
cam.moveCamera(Camera.CAMERA_MOVEOUT, 10);
cam.lookAt(cube.getTransformedCenter());
SimpleVector sv = new SimpleVector();
sv.set(cube.getTransformedCenter());
sv.y -= 100;
sv.z -= 100;
sun.setPosition(sv);
MemoryHelper.compact();com.threed.jpct.Matrix mResult = new com.threed.jpct.Matrix();
mResult.setDump(modelviewMatrix ); //modelviewMatrix i get from Qcar
cube.setRotationMatrix(mResult);
cam.setBack(mResult);
fb.clear(back);
world.renderScene(fb);
world.draw(fb);
fb.display();Thanks alot Egon, this kind of animation works fine.use simple transparent background png image.
One more Q: how to make this texture transparent?
TriedCode: [Select]With png file containing alpha channel & black-backgrounded png file. Can't get transparent texture(
texture = new Texture(context.getAssets().open("ani4.png"),true);
TextureManager.getInstance().addTexture("explode", texture);
com.threed.jpct.Matrix texMat=new com.threed.jpct.Matrix();
texMat.scalarMul(0.25f);
if(sprite)
{
float x,y=0;
plane.setVisibility(true);
for (x=0;x<4;x++)
{
for(y=0;y<4;y++)
{
frameCount++;
if(frameCount==200)
{
frameCount=0;
texMat.translate(0.25f*(float)x, 0.25f*(float)y, 0);
plane.setTextureMatrix(texMat);
}
}
}
}
You can create a texture that contains for example 16 (4*4) explosion textures, create quad with texture coordinates (0,0)-(0.25,0.25) and modify the texture matrix at runtime to "jump" to the proper explosion image for the given frame.hi EgonOlsen,
so could you plz elaborate your ans.i have image with explosion texture.but how to use texture coordinate puzzling me.That's because the model textures contain black parts, which jPCT will default to zero alpha. This doesn't matter if you render into an opaque buffer, but in your case, it does. Solution should be simple: create the textures with "new Texture(..., true);"ya that was the problem ,thanx a lot
com.threed.jpct.Matrix mResult = new com.threed.jpct.Matrix();
mResult.setDump(modelviewMatrix); //modelviewMatrix i get from Qcar
// cube.setRotationMatrix(mResult);
cam.setBack(mResult);public void onSurfaceChanged(GL10 gl, int w, int h) {
if (fb != null) {
fb.dispose();
}
fb = new FrameBuffer(gl, w, h);
world = new World();
world.setAmbientLight(20, 20, 20);
sun = new Light(world);
sun.setIntensity(250, 250, 250);
Resources res = ImageTargets.getImageTarget().getResources();
TextureManager tm = TextureManager.getInstance();
Texture ogro1 = new Texture(res.openRawResource(R.drawable.ogrobase));
tm.addTexture("ogro", ogro1);
ogro = Loader.loadMD2(res.openRawResource(R.raw.ogro), 1f);
ogro.setTexture("ogro");
// ogro.rotateY(-20);
// ogro.rotateZ(110);
ogro.rotateX(90);
world.buildAllObjects();
world.addObject(ogro);
Camera cam = world.getCamera();
cam.moveCamera(Camera.CAMERA_MOVEOUT, 50);
cam.lookAt(ogro.getTransformedCenter());
SimpleVector sv = new SimpleVector();
sv.set(ogro.getTransformedCenter());
sv.x -= 300;
sv.z -= 0;
sun.setPosition(sv);
MemoryHelper.compact();
}
public void onDrawFrame(GL10 gl) {
ogro.animate(anim, 0);
if (anim>1) {
anim=0;
} else {
anim+=0.1f;
}
fb.clear();
world.renderScene(fb);
world.draw(fb);
fb.display();
if (System.currentTimeMillis() - time >= 1000) {
Logger.log(fps + "fps");
fps = 0;
time = System.currentTimeMillis();
}
fps++;
}
}