| /* |
| |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You under the Apache License, Version 2.0 |
| (the "License"); you may not use this file except in compliance with |
| the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| |
| */ |
| package org.apache.batik.anim.values; |
| |
| import org.apache.batik.dom.anim.AnimationTarget; |
| |
| /** |
| * A number list in the animation system. |
| * |
| * @author <a href="mailto:cam%40mcc%2eid%2eau">Cameron McCormack</a> |
| * @version $Id$ |
| */ |
| public class AnimatableNumberListValue extends AnimatableValue { |
| |
| /** |
| * The numbers. |
| */ |
| protected float[] numbers; |
| |
| /** |
| * Creates a new, uninitialized AnimatableNumberListValue. |
| */ |
| protected AnimatableNumberListValue(AnimationTarget target) { |
| super(target); |
| } |
| |
| /** |
| * Creates a new AnimatableNumberListValue. |
| */ |
| public AnimatableNumberListValue(AnimationTarget target, float[] numbers) { |
| super(target); |
| this.numbers = numbers; |
| } |
| |
| /** |
| * Performs interpolation to the given value. Number list values cannot |
| * be interpolated. |
| */ |
| public AnimatableValue interpolate(AnimatableValue result, |
| AnimatableValue to, |
| float interpolation, |
| AnimatableValue accumulation, |
| int multiplier) { |
| AnimatableNumberListValue toNumList = (AnimatableNumberListValue) to; |
| AnimatableNumberListValue accNumList = |
| (AnimatableNumberListValue) accumulation; |
| |
| boolean hasTo = to != null; |
| boolean hasAcc = accumulation != null; |
| boolean canInterpolate = |
| !(hasTo && toNumList.numbers.length != numbers.length) |
| && !(hasAcc && accNumList.numbers.length != numbers.length); |
| |
| float[] baseValues; |
| if (!canInterpolate && hasTo && interpolation >= 0.5) { |
| baseValues = toNumList.numbers; |
| } else { |
| baseValues = numbers; |
| } |
| int len = baseValues.length; |
| |
| AnimatableNumberListValue res; |
| if (result == null) { |
| res = new AnimatableNumberListValue(target); |
| res.numbers = new float[len]; |
| } else { |
| res = (AnimatableNumberListValue) result; |
| if (res.numbers == null || res.numbers.length != len) { |
| res.numbers = new float[len]; |
| } |
| } |
| |
| for (int i = 0; i < len; i++) { |
| float newValue = baseValues[i]; |
| if (canInterpolate) { |
| if (hasTo) { |
| newValue += interpolation * (toNumList.numbers[i] - newValue); |
| } |
| if (hasAcc) { |
| newValue += multiplier * accNumList.numbers[i]; |
| } |
| } |
| if (res.numbers[i] != newValue) { |
| res.numbers[i] = newValue; |
| res.hasChanged = true; |
| } |
| } |
| |
| return res; |
| } |
| |
| /** |
| * Gets the numbers. |
| */ |
| public float[] getNumbers() { |
| return numbers; |
| } |
| |
| /** |
| * Returns whether two values of this type can have their distance |
| * computed, as needed by paced animation. |
| */ |
| public boolean canPace() { |
| return false; |
| } |
| |
| /** |
| * Returns the absolute distance between this value and the specified other |
| * value. |
| */ |
| public float distanceTo(AnimatableValue other) { |
| return 0f; |
| } |
| |
| /** |
| * Returns a zero value of this AnimatableValue's type. |
| */ |
| public AnimatableValue getZeroValue() { |
| float[] ns = new float[numbers.length]; |
| return new AnimatableNumberListValue(target, ns); |
| } |
| |
| /** |
| * Returns the CSS text representation of the value. |
| */ |
| public String getCssText() { |
| StringBuffer sb = new StringBuffer(); |
| sb.append(numbers[0]); |
| for (int i = 1; i < numbers.length; i++) { |
| sb.append(' '); |
| sb.append(numbers[i]); |
| } |
| return sb.toString(); |
| } |
| } |