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Added comments, renamed files, removed cruft. Stop showing the visualization tag name in the code list. It's often redundant with the code label, and it's distracting. (We may want to make this an option so you can Ctrl+F to find a tag.)
142 lines
4.8 KiB
C#
142 lines
4.8 KiB
C#
/*
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* Copyright 2019 faddenSoft
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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using System;
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using System.Diagnostics;
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namespace PluginCommon {
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/// <summary>
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/// Bitmap with 8-bit palette indices, for use with visualization generators.
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/// </summary>
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[Serializable]
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public class VisBitmap8 : IVisualization2d {
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public const int MAX_DIMENSION = 4096;
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// IVisualization2d
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public int Width { get; private set; }
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// IVisualization2d
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public int Height { get; private set; }
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private byte[] mData;
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private int[] mPalette;
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private int mNextColorIdx;
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/// <summary>
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/// Constructor.
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/// </summary>
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/// <param name="width">Bitmap width, in pixels.</param>
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/// <param name="height">Bitmap height, in pixels.</param>
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public VisBitmap8(int width, int height) {
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if (width <= 0 || width > MAX_DIMENSION || height <= 0 || height > MAX_DIMENSION) {
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throw new ArgumentException("Bad bitmap width/height " + width + "," + height);
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}
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Width = width;
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Height = height;
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mData = new byte[width * height];
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mPalette = new int[256];
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mNextColorIdx = 0;
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}
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public int GetPixel(int x, int y) {
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byte pix = mData[x + y * Width];
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return mPalette[pix];
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}
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/// <summary>
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/// Sets the color for a single pixel.
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/// </summary>
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/// <param name="x">X coordinate.</param>
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/// <param name="y">Y coordinate.</param>
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/// <param name="colorIndex">Color index.</param>
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public void SetPixelIndex(int x, int y, byte colorIndex) {
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if (x < 0 || x >= Width || y < 0 || y >= Height) {
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throw new ArgumentException("Bad x/y: " + x + "," + y + " (width=" + Width +
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" height=" + Height + ")");
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}
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if (colorIndex < 0 || colorIndex >= mNextColorIdx) {
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throw new ArgumentException("Bad color: " + colorIndex + " (nextCol=" +
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mNextColorIdx + ")");
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}
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mData[x + y * Width] = colorIndex;
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}
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/// <summary>
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/// Sets the color for all pixels.
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/// </summary>
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/// <param name="colorIndex">Color index.</param>
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public void SetAllPixelIndices(byte colorIndex) {
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if (colorIndex < 0 || colorIndex >= mNextColorIdx) {
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throw new ArgumentException("Bad color: " + colorIndex + " (nextCol=" +
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mNextColorIdx + ")");
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}
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for (int i = 0; i < mData.Length; i++) {
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mData[i] = colorIndex;
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}
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}
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// IVisualization2d
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public byte[] GetPixels() {
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return mData;
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}
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// IVisualization2d
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public int[] GetPalette() {
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int[] pal = new int[mNextColorIdx];
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for (int i = 0; i < mNextColorIdx; i++) {
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pal[i] = mPalette[i];
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}
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return pal;
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}
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/// <summary>
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/// Adds a new color to the palette. If the color already exists, the call has no
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/// effect.
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/// </summary>
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/// <param name="color">32-bit ARGB color value.</param>
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public void AddColor(int color) {
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if (mNextColorIdx == 256) {
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Debug.WriteLine("Palette is full");
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return;
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}
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// I'm expecting palettes to only have a few colors, so O(n^2) is fine for now.
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for (int i = 0; i < mNextColorIdx; i++) {
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if (mPalette[i] == color) {
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Debug.WriteLine("Color " + color.ToString("x6") +
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" already exists in palette (" + i + ")");
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return;
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}
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}
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mPalette[mNextColorIdx++] = color;
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}
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/// <summary>
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/// Adds a new color to the palette. If the color already exists, the call has no
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/// effect.
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/// </summary>
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/// <param name="a">Alpha value.</param>
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/// <param name="r">Red value.</param>
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/// <param name="g">Green value.</param>
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/// <param name="b">Blue value.</param>
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public void AddColor(byte a, byte r, byte g, byte b) {
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AddColor(Util.MakeARGB(a, r, g, b));
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}
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}
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}
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