Surface view rendering problem in Android

[KaushalANS]

@JulienGenoud @mortonfox I am using this library for the android project and it works well, but when I set the GLSurfaceView height bigger than the width, the surface doesn't get render properly. I can see some space covering on top and bottom of the surface, and the particles just get lost when they come under this area.

Is there any settings in library somewhere, or how I can fix it?

Any help is appreciate.

[YujiWongTW]

Hi, try to replace the method onSurfaceChanged(int width, int height) in ParticleRenderer.java with following code:

public void onSurfaceChanged(int width, int height) {

    float xRatio = 1;
    float yRatio = 1;

    if (width < height) {
        xRatio = (float) width / height;
    } else {
        yRatio = (float) height / width;
    }

    // Set up the transform
    Matrix.setIdentityM(mTransformFromTexture, 0);
    Matrix.scaleM(mTransformFromTexture, 0, 1 / xRatio, 1 / yRatio , 1);

    Matrix.setIdentityM(mTransformFromWorld, 0);
    Matrix.translateM(mTransformFromWorld, 0, -xRatio, -yRatio, 0);
    Matrix.scaleM(
            mTransformFromWorld,
            0,
            2 * xRatio / Renderer.getInstance().sRenderWorldWidth,
            2 * yRatio / Renderer.getInstance().sRenderWorldHeight,
            1);
}