55 lines
1.5 KiB
Java
55 lines
1.5 KiB
Java
package app.fedilab.android.animatemenu.animation;
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import android.graphics.Camera;
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import android.graphics.Matrix;
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import android.view.animation.Animation;
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import android.view.animation.Transformation;
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/**
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* Created by Konstantin on 22.12.2014.
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*/
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public class FlipAnimation extends Animation {
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private final float mFromDegrees;
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private final float mToDegrees;
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private final float mCenterX;
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private final float mCenterY;
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private Camera mCamera;
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public FlipAnimation(float fromDegrees, float toDegrees,
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float centerX, float centerY) {
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mFromDegrees = fromDegrees;
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mToDegrees = toDegrees;
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mCenterX = centerX;
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mCenterY = centerY;
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}
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@Override
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public void initialize(int width, int height, int parentWidth, int parentHeight) {
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super.initialize(width, height, parentWidth, parentHeight);
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mCamera = new Camera();
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}
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@Override
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protected void applyTransformation(float interpolatedTime, Transformation t) {
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final float fromDegrees = mFromDegrees;
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float degrees = fromDegrees + ((mToDegrees - fromDegrees) * interpolatedTime);
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final float centerX = mCenterX;
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final float centerY = mCenterY;
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final Camera camera = mCamera;
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final Matrix matrix = t.getMatrix();
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camera.save();
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camera.rotateY(degrees);
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camera.getMatrix(matrix);
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camera.restore();
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matrix.preTranslate(-centerX, -centerY);
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matrix.postTranslate(centerX, centerY);
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}
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} |