lottie/src/main/java/com/airbnb/lottie/MiscUtils.java

package com.airbnb.lottie;

import android.graphics.Path;
import android.graphics.PointF;
import android.support.annotation.FloatRange;

class MiscUtils {
  static PointF addPoints(PointF p1, PointF p2) {
    return new PointF(p1.x + p2.x, p1.y + p2.y);
  }

  static void getPathFromData(ShapeData shapeData, Path outPath) {
    outPath.reset();
    PointF initialPoint = shapeData.getInitialPoint();
    outPath.moveTo(initialPoint.x, initialPoint.y);
    for (int i = 0; i < shapeData.getCurves().size(); i++) {
      CubicCurveData curveData = shapeData.getCurves().get(i);
      outPath.cubicTo(curveData.getControlPoint1().x, curveData.getControlPoint1().y,
          curveData.getControlPoint2().x, curveData.getControlPoint2().y,
          curveData.getVertex().x, curveData.getVertex().y);
    }
    if (shapeData.isClosed()) {
      outPath.close();
    }
  }

  static float lerp(float a, float b, @FloatRange(from = 0f, to = 1f) float percentage) {
    return a + percentage * (b - a);
  }

  static int lerp(int a, int b, @FloatRange(from = 0f, to = 1f) float percentage) {
    return (int) (a + percentage * (b - a));
  }
}