3d cube using canvas. Need a little improvement

Question

I made this 3d cube using the following code

Matrix mMatrix = canvas.getMatrix();

canvas.save();
camera.save();
camera.rotateY(-angle);
camera.getMatrix(mMatrix);
mMatrix.preTranslate(-width, 0);
mMatrix.postTranslate(width, 0);
canvas.concat(mMatrix);
canvas.drawBitmap(bmp1, 0, 0, null);
camera.restore();
canvas.restore();

camera.rotateY(90 - angle);
camera.getMatrix(mMatrix);
mMatrix.preTranslate(-width, 0);
mMatrix.postTranslate(width2, 0);
canvas.concat(mMatrix);
canvas.drawBitmap(bmp2, width, 0, null);

This is what it gives

enter image description here

But what I need is

enter image description here

It's because when Camera rotates the images, some part of the image gets hidden. Like this enter image description here

But I think this can be done.

can u please share the code for creating cube – Reprator Oct 22 '17 at 18:10 — Reprator, Oct 22 '17 at 18:10

score 2 · Accepted Answer · answered Sep 05 '12 at 03:36

2

It was pretty easy actually. The image had to be translated by half it's width/height along the axis it was being rotated.

So the following changes did it

mMatrix.preTranslate(-width, -height / 2);
mMatrix.postTranslate(width, height / 2);

answered Sep 05 '12 at 03:36

timemanx

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@Vivekanand The code is in the question. Use it after making the changes in the answer. – timemanx Mar 24 '13 at 06:36
I'm sorry for being so informal, its because of the desperate situation. I dont really want the complete code some tutorial of to how the implementation is done would be appreciated, thanks – Vivekanand Mar 25 '13 at 06:33
@ShubhadeepChaudhuri, can u please share the code for creating 3d cube – Reprator Oct 22 '17 at 18:33

3d cube using canvas. Need a little improvement

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