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76 lines
2.4 KiB
C#
76 lines
2.4 KiB
C#
// ClassicalSharp copyright 2014-2016 UnknownShadow200 | Licensed under MIT
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using System;
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using System.Drawing;
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using ClassicalSharp.GraphicsAPI;
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#if ANDROID
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using Android.Graphics;
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#endif
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namespace ClassicalSharp {
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/// <summary> Integer constants for the six tile sides of a block. </summary>
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public static class Side {
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/// <summary> Face X = 0. </summary>
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public const int Left = 0;
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/// <summary> Face X = 1. </summary>
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public const int Right = 1;
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/// <summary> Face Z = 0. </summary>
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public const int Front = 2;
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/// <summary> Face Z = 1. </summary>
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public const int Back = 3;
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/// <summary> Face Y = 0. </summary>
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public const int Bottom = 4;
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/// <summary> Face Y = 1. </summary>
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public const int Top = 5;
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/// <summary> Number of sides on a cube. </summary>
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public const int Sides = 6;
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}
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/// <summary> Represents a 2D packed texture atlas, specifically for terrain.png. </summary>
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public class TerrainAtlas2D : IDisposable {
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public const int ElementsPerRow = 16, RowsCount = 16;
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public const float invElementSize = 1 / 16f;
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public Bitmap AtlasBitmap;
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public int elementSize;
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IGraphicsApi graphics;
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IDrawer2D drawer;
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public TerrainAtlas2D( IGraphicsApi graphics, IDrawer2D drawer ) {
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this.graphics = graphics;
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this.drawer = drawer;
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}
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/// <summary> Updates the underlying atlas bitmap, fields, and texture. </summary>
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public void UpdateState( BlockInfo info, Bitmap bmp ) {
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if( !FastBitmap.CheckFormat( bmp.PixelFormat ) ) {
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Utils.LogDebug( "Converting terrain atlas to 32bpp image" );
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drawer.ConvertTo32Bpp( ref bmp );
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}
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AtlasBitmap = bmp;
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elementSize = bmp.Width >> 4;
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using( FastBitmap fastBmp = new FastBitmap( bmp, true, true ) )
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info.RecalculateSpriteBB( fastBmp );
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}
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/// <summary> Creates a new texture that contains the tile at the specified index. </summary>
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public int LoadTextureElement( int index ) {
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int size = elementSize;
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using( FastBitmap atlas = new FastBitmap( AtlasBitmap, true, true ) )
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using( Bitmap bmp = new Bitmap( size, size ) )
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using( FastBitmap dst = new FastBitmap( bmp, true, false ) )
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{
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FastBitmap.MovePortion( (index & 0x0F) * size, (index >> 4) *
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size, 0, 0, atlas, dst, size );
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return graphics.CreateTexture( dst );
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}
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}
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/// <summary> Disposes of the underlying atlas bitmap and texture. </summary>
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public void Dispose() {
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if( AtlasBitmap != null )
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AtlasBitmap.Dispose();
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}
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}
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} |