LibGDX 2D shadows with affines

gistfile1.txt

/*
     *      Creates a custom Affine2 for shadows with rotation
     * 
     *      x, y                --> position in world (usually the entity position)
     *      rotation            --> angle in degrees
     *      offsetX, offsetY    --> if the original sprite is drawn with an offset
     *      originX, originY    --> center of the sprite
     *      shearX, shearY      --> shear amount (usually day/night cycle shear values)
     *      scaleX, scaleY      --> scale amount (usually day/night cycle scale values)
     */
    public static Affine2 createAdvancedShadowAffine(float worldX, float worldY,
                                                     float rotation,
                                                     float offsetX, float offsetY,
                                                     float originX, float originY,
                                                     float shearX, float shearY,
                                                     float scaleX, float scaleY) {
        Affine2 shearingAffine = new Affine2();
        shearingAffine.setToShearing(shearX, shearY);

        Affine2 offsetAffine = new Affine2();
        offsetAffine.setToTranslation(offsetX, offsetY);

        Affine2 rotationAffine = new Affine2();
        rotationAffine.translate(originX, originY);
        rotationAffine.rotate(rotation);
        rotationAffine.translate(-originX, -originY);
        rotationAffine.preMul(offsetAffine);

        return new Affine2()
                .preMul(rotationAffine)
                .preMul(shearingAffine)
                .preScale(scaleX, scaleY)
                .preTranslate(worldX, worldY);
    }

    public static Affine2 createSimpleShadowAffine(float worldX, float worldY) {
        WorldTime worldTime = PhantomsContainer.singleton.getPhantomsWorld().getWorldTime();
        return createAdvancedShadowAffine(worldX, worldY, 0, 0, 0, 0, 0,
                worldTime.getCurrentShadowShearX(), 0, 1, worldTime.getCurrentShadowSizeY());
    }