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SkAR Java: Animation support

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Bug: skia:
Change-Id: Ia43ccd7d9969e5167e6cd6f561b2d6d604e700a1
Reviewed-on: https://skia-review.googlesource.com/141100
Reviewed-by: Mike Reed <reed@google.com>
This commit is contained in:
ziadb 2018-07-12 16:10:55 -04:00 committed by Ziad Ben Hadj-Alouane
parent 0df21136e3
commit be396c05f9
2 changed files with 39 additions and 0 deletions
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16
platform_tools/android/apps/skar_java/src/main/java/com/google/ar/core/examples/java/helloskar/DrawManager.java
View File

@ -75,6 +75,22 @@ public class DrawManager {
canvas.restore();
}
// Sample function for drawing an animated round rect
public void drawAnimatedRoundRect(Canvas canvas, float radius) {
if (modelMatrices.isEmpty()) {
return;
}
Paint p = new Paint();
p.setColorFilter(lightFilter);
p.setARGB(180, 100, 0, 100);
canvas.save();
canvas.setMatrix(SkARMatrix.createPerspectiveMatrix(modelMatrices.get(0),
viewMatrix, projectionMatrix, viewportWidth, viewportHeight));
canvas.drawRoundRect(0,0, 0.5f, 0.5f, radius, radius, p);
canvas.restore();
}
// Sample function for drawing a rect
public void drawRect(Canvas canvas) {
if (modelMatrices.isEmpty()) {

23
platform_tools/android/apps/skar_java/src/main/java/com/google/ar/core/examples/java/helloskar/HelloSkARActivity.java
View File

@ -16,6 +16,8 @@
package com.google.ar.core.examples.java.helloskar;
import android.animation.PropertyValuesHolder;
import android.animation.ValueAnimator;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.PorterDuff;
@ -94,6 +96,11 @@ public class HelloSkARActivity extends AppCompatActivity implements GLSurfaceVie
// Anchors created from taps used for object placing.
private final ArrayList<Anchor> anchors = new ArrayList<>();
// Animation fields
float radius;
String PROPERTY_RADIUS = "radius";
ValueAnimator animator;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
@ -115,6 +122,21 @@ public class HelloSkARActivity extends AppCompatActivity implements GLSurfaceVie
glSurfaceView.setRenderMode(GLSurfaceView.RENDERMODE_CONTINUOUSLY);
installRequested = false;
// Animator set up
PropertyValuesHolder propertyRadius = PropertyValuesHolder.ofFloat(PROPERTY_RADIUS, 0, 0.5f);
animator = new ValueAnimator();
animator.setValues(propertyRadius);
animator.setDuration(1000);
animator.setRepeatCount(ValueAnimator.INFINITE);
animator.setRepeatMode(ValueAnimator.REVERSE);
animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
radius = (float) animation.getAnimatedValue(PROPERTY_RADIUS);
}
});
animator.start();
}
@Override
@ -359,6 +381,7 @@ public class HelloSkARActivity extends AppCompatActivity implements GLSurfaceVie
drawManager.drawRect(canvas);
drawManager.drawCircle(canvas);
drawManager.drawAnimatedRoundRect(canvas, radius);
drawManager.drawText(canvas, "HelloSkAR");
}
}