28 lines
759 B
C#
28 lines
759 B
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace XPrint.Production.Business.Tools
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{
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public static class ImageTool
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{
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/// <summary>
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/// 根据dpi毫米转像素
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/// </summary>
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/// <param name="mm">毫米值</param>
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/// <param name="dpi"> 每英寸点数（打印设备常用300DPI）</param>
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/// <returns>对应的像素值</returns>
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public static float MMToPxWithDpi(float mm, float dpi)
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{
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if (mm <= 0 || dpi <= 0)
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{
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return 0;
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}
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// 1英寸 = 25.4毫米，所以1毫米 = dpi/25.4像素
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return mm * (dpi / 25.4f);
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}
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}
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}
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