Method getMatrix

shared/java/PathMeasure.java:131–140

Pins distance to 0 <= distance <= getLength(), and then computes the corresponding matrix (by calling getPosition/getTangent). @return null if there is no path, or a zero-length path was specified.

(float distance, boolean getPosition, boolean getTangent)

     * @return  null if there is no path, or a zero-length path was specified.
     */
    @Nullable
    public Matrix33 getMatrix(float distance, boolean getPosition, boolean getTangent) {
        try {
            Stats.onNativeCall();
            float[] mat = _nGetMatrix(_ptr, distance, getPosition, getTangent);
            return mat == null ? null : new Matrix33(mat);
        } finally {
            Reference.reachabilityFence(this);
        }
    }

    /**
     * Given a start and stop distance, return in dst the intervening segment(s).