/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed 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 android.graphics;
public class SweepGradient extends Shader {
private PointF m_center;
private int[] m_colors;
private float[] m_positions;
/**
* A subclass of Shader that draws a sweep gradient around a center point.
*
* @param cx The x-coordinate of the center
* @param cy The y-coordinate of the center
* @param colors The colors to be distributed between around the center.
* There must be at least 2 colors in the array.
* @param positions May be NULL. The relative position of
* each corresponding color in the colors array, beginning
* with 0 and ending with 1.0. If the values are not
* monotonic, the drawing may produce unexpected results.
* If positions is NULL, then the colors are automatically
* spaced evenly.
*/
public SweepGradient(float cx, float cy,
int colors[], float positions[]) {
if (colors.length < 2) {
throw new IllegalArgumentException("needs >= 2 number of colors");
}
if (positions != null && colors.length != positions.length) {
throw new IllegalArgumentException(
"color and position arrays must be of equal length");
}
m_center = new PointF(cx, cy);
m_colors = new int[colors.length];
for (int i = 0; i < colors.length; i++) {
m_colors[i] = colors[i];
}
if (positions != null) {
m_positions = new float[positions.length];
for (int i = 0; i < positions.length; i++) {
m_positions[i] = positions[i];
}
}
//native_instance = nativeCreate1(cx, cy, colors, positions);
}
/**
* A subclass of Shader that draws a sweep gradient around a center point.
*
* @param cx The x-coordinate of the center
* @param cy The y-coordinate of the center
* @param color0 The color to use at the start of the sweep
* @param color1 The color to use at the end of the sweep
*/
public SweepGradient(float cx, float cy, int color0, int color1) {
m_center = new PointF(cx, cy);
m_colors = new int[2];
m_colors[0] = color0; m_colors[1] = color1;
//native_instance = nativeCreate2(cx, cy, color0, color1);
}
}