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Вопрос по android – Android: вертикальный 3d просмотр списка

Я хотел бы сделать вертикальный вид списка 3Dкак здесь, но для ImageButtons и бесплатно. Есть ли библиотека или пример кода для этого? Я новичок в разработке для Android, поэтому я не знаю, как анимировать такие вещи

  • Error: User Rate Limit Exceeded

    от
  • Error: User Rate Limit Exceeded

    от
  • Error: User Rate Limit Exceeded

    от
  • Error: User Rate Limit Exceeded

    от Paulius Vindzigelskis
  • Error: User Rate Limit Exceededlink

    от Paulius Vindzigelskis
  • 11

    Error: User Rate Limit Exceeded

    GitHubвопрос

    public class ListView3d extends ListView {
    
        /** Ambient light intensity */
        private static final int AMBIENT_LIGHT = 55;
        /** Diffuse light intensity */
        private static final int DIFFUSE_LIGHT = 200;
        /** Specular light intensity */
        private static final float SPECULAR_LIGHT = 70;
        /** Shininess constant */
        private static final float SHININESS = 200;
        /** The max intensity of the light */
        private static final int MAX_INTENSITY = 0xFF;
    
        private final Camera mCamera = new Camera();
        private final Matrix mMatrix = new Matrix();
        /** Paint object to draw with */
        private Paint mPaint;
    
        public ListView3d(Context context, AttributeSet attrs) {
            super(context, attrs);
        }
    
        @Override
        protected boolean drawChild(Canvas canvas, View child, long drawingTime) {
            // get top left coordinates
            final int top = child.getTop();
            final int left = child.getLeft();
            Bitmap bitmap = child.getDrawingCache();
            if (bitmap == null) {
                child.setDrawingCacheEnabled(true);
                child.buildDrawingCache();
                bitmap = child.getDrawingCache();
            }
    
            final int centerY = child.getHeight() / 2;
            final int centerX = child.getWidth() / 2;
            final int radius = getHeight() / 2;
            final int absParentCenterY = getTop() + getHeight() / 2;
            final int absChildCenterY = child.getTop() + centerX;
            final int distanceY = absParentCenterY - absChildCenterY;
            final int absDistance = Math.min(radius, Math.abs(distanceY));
    
            final float translateZ = (float) Math.sqrt((radius * radius) - (absDistance * absDistance));
    
            double radians = Math.acos((float) absDistance / radius);
            double degree = 90 - (180 / Math.PI) * radians;
    
            mCamera.save();
            mCamera.translate(0, 0, radius - translateZ);
            mCamera.rotateX((float) degree); // remove this line..
            if (distanceY < 0) {
                degree = 360 - degree;
            }
            mCamera.rotateY((float) degree); // and change this to rotateX() to get a
                                                // wheel like effect
            mCamera.getMatrix(mMatrix);
            mCamera.restore();
    
            // create and initialize the paint object
            if (mPaint == null) {
                mPaint = new Paint();
                mPaint.setAntiAlias(true);
                mPaint.setFilterBitmap(true);
            }
            //highlight elements in the middle
            mPaint.setColorFilter(calculateLight((float) degree));
    
            mMatrix.preTranslate(-centerX, -centerY);
            mMatrix.postTranslate(centerX, centerY);
            mMatrix.postTranslate(left, top);
            canvas.drawBitmap(bitmap, mMatrix, mPaint);
            return false;
        }
    
        private LightingColorFilter calculateLight(final float rotation) {
            final double cosRotation = Math.cos(Math.PI * rotation / 180);
            int intensity = AMBIENT_LIGHT + (int) (DIFFUSE_LIGHT * cosRotation);
            int highlightIntensity = (int) (SPECULAR_LIGHT * Math.pow(cosRotation, SHININESS));
            if (intensity > MAX_INTENSITY) {
                intensity = MAX_INTENSITY;
            }
            if (highlightIntensity > MAX_INTENSITY) {
                highlightIntensity = MAX_INTENSITY;
            }
            final int light = Color.rgb(intensity, intensity, intensity);
            final int highlight = Color.rgb(highlightIntensity, highlightIntensity, highlightIntensity);
            return new LightingColorFilter(light, highlight);
        }
    }
    

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