62 lines
1.4 KiB
C#
62 lines
1.4 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Drawing;
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namespace OpenRa.Game
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{
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class Sprite
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{
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public readonly Rectangle bounds;
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public readonly Sheet sheet;
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public readonly TextureChannel channel;
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public readonly RectangleF uv;
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public readonly float2 size;
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readonly float2[] uvhax;
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internal Sprite(Sheet sheet, Rectangle bounds, TextureChannel channel)
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{
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this.bounds = bounds;
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this.sheet = sheet;
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this.channel = channel;
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uv = new RectangleF(
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(float)(bounds.Left + 0.5f) / sheet.Size.Width,
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(float)(bounds.Top + 0.5f) / sheet.Size.Height,
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(float)(bounds.Width) / sheet.Size.Width,
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(float)(bounds.Height) / sheet.Size.Height);
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uvhax = new float2[]
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{
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MapTextureCoords( new float2(0,0) ),
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MapTextureCoords( new float2(1,0) ),
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MapTextureCoords( new float2(0,1) ),
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MapTextureCoords( new float2(1,1) ),
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};
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this.size = new float2(bounds.Size);
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}
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public float2 MapTextureCoords(float2 p)
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{
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return new float2(
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p.X > 0 ? uv.Right : uv.Left,
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p.Y > 0 ? uv.Bottom : uv.Top);
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}
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public float2 FastMapTextureCoords(int k)
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{
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return uvhax[k];
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}
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}
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public enum TextureChannel
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{
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Red = 0,
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Green = 1,
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Blue = 2,
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Alpha = 3,
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}
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}
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