書きかけ

gistfile1.java

    void calcWorldSize() {

        final float screenRatio = ((float)Gdx.graphics.getWidth()) / Gdx.graphics.getHeight();
        final float worldRatio  = W / H;

        if (screenRatio > worldRatio) {
            worldBottomLeft.y = 0;
            worldTopRight.y = H;

            float w = screenRatio * H;
            worldBottomLeft.x =   - (w - W)/2;
            worldTopRight.x   = W + (w - W)/2;
        }
        else {
            worldBottomLeft.x = 0;
            worldTopRight.x = W;

            float h = W / screenRatio;
            worldBottomLeft.y =   - (h - H)/2;
            worldTopRight.y   = H + (h - H)/2;
        }

        Gdx.app.log(TAG, "worldBottomLeft : " + worldBottomLeft.toString());
        Gdx.app.log(TAG, "worldTopRight : " + worldTopRight.toString());

        worldWidth = worldTopRight.x - worldBottomLeft.x;
        worldHeight = worldTopRight.y - worldBottomLeft.y;

    }