Examples with PathMeasure android.graphics.PathMeasure used on opensource projects

Example 31 with PathMeasure

use of android.graphics.PathMeasure in project android_frameworks_base by AOSPA.

the class PatternPathMotion method setPatternPath.

/**
     * Sets the Path defining a pattern of motion between two coordinates.
     * The pattern will be translated, rotated, and scaled to fit between the start and end points.
     * The pattern must not be empty and must have the end point differ from the start point.
     *
     * @param patternPath A Path to be used as a pattern for two-dimensional motion.
     * @attr ref android.R.styleable#PatternPathMotion_patternPathData
     */
public void setPatternPath(Path patternPath) {
    PathMeasure pathMeasure = new PathMeasure(patternPath, false);
    float length = pathMeasure.getLength();
    float[] pos = new float[2];
    pathMeasure.getPosTan(length, pos, null);
    float endX = pos[0];
    float endY = pos[1];
    pathMeasure.getPosTan(0, pos, null);
    float startX = pos[0];
    float startY = pos[1];
    if (startX == endX && startY == endY) {
        throw new IllegalArgumentException("pattern must not end at the starting point");
    }
    mTempMatrix.setTranslate(-startX, -startY);
    float dx = endX - startX;
    float dy = endY - startY;
    float distance = (float) Math.hypot(dx, dy);
    float scale = 1 / distance;
    mTempMatrix.postScale(scale, scale);
    double angle = Math.atan2(dy, dx);
    mTempMatrix.postRotate((float) Math.toDegrees(-angle));
    patternPath.transform(mTempMatrix, mPatternPath);
    mOriginalPatternPath = patternPath;
}

Example 32 with PathMeasure

use of android.graphics.PathMeasure in project android_frameworks_base by ResurrectionRemix.

the class PatternPathMotion method setPatternPath.

/**
     * Sets the Path defining a pattern of motion between two coordinates.
     * The pattern will be translated, rotated, and scaled to fit between the start and end points.
     * The pattern must not be empty and must have the end point differ from the start point.
     *
     * @param patternPath A Path to be used as a pattern for two-dimensional motion.
     * @attr ref android.R.styleable#PatternPathMotion_patternPathData
     */
public void setPatternPath(Path patternPath) {
    PathMeasure pathMeasure = new PathMeasure(patternPath, false);
    float length = pathMeasure.getLength();
    float[] pos = new float[2];
    pathMeasure.getPosTan(length, pos, null);
    float endX = pos[0];
    float endY = pos[1];
    pathMeasure.getPosTan(0, pos, null);
    float startX = pos[0];
    float startY = pos[1];
    if (startX == endX && startY == endY) {
        throw new IllegalArgumentException("pattern must not end at the starting point");
    }
    mTempMatrix.setTranslate(-startX, -startY);
    float dx = endX - startX;
    float dy = endY - startY;
    float distance = (float) Math.hypot(dx, dy);
    float scale = 1 / distance;
    mTempMatrix.postScale(scale, scale);
    double angle = Math.atan2(dy, dx);
    mTempMatrix.postRotate((float) Math.toDegrees(-angle));
    patternPath.transform(mTempMatrix, mPatternPath);
    mOriginalPatternPath = patternPath;
}

Example 33 with PathMeasure

use of android.graphics.PathMeasure in project android_frameworks_base by crdroidandroid.

the class PatternPathMotion method setPatternPath.

/**
     * Sets the Path defining a pattern of motion between two coordinates.
     * The pattern will be translated, rotated, and scaled to fit between the start and end points.
     * The pattern must not be empty and must have the end point differ from the start point.
     *
     * @param patternPath A Path to be used as a pattern for two-dimensional motion.
     * @attr ref android.R.styleable#PatternPathMotion_patternPathData
     */
public void setPatternPath(Path patternPath) {
    PathMeasure pathMeasure = new PathMeasure(patternPath, false);
    float length = pathMeasure.getLength();
    float[] pos = new float[2];
    pathMeasure.getPosTan(length, pos, null);
    float endX = pos[0];
    float endY = pos[1];
    pathMeasure.getPosTan(0, pos, null);
    float startX = pos[0];
    float startY = pos[1];
    if (startX == endX && startY == endY) {
        throw new IllegalArgumentException("pattern must not end at the starting point");
    }
    mTempMatrix.setTranslate(-startX, -startY);
    float dx = endX - startX;
    float dy = endY - startY;
    float distance = (float) Math.hypot(dx, dy);
    float scale = 1 / distance;
    mTempMatrix.postScale(scale, scale);
    double angle = Math.atan2(dy, dx);
    mTempMatrix.postRotate((float) Math.toDegrees(-angle));
    patternPath.transform(mTempMatrix, mPatternPath);
    mOriginalPatternPath = patternPath;
}