转换计量单位

VB C#

using IronSoftware.Drawing;
using System;

// Instantiate a Rectangle (Default measurement unit is pixels)
Rectangle pxCropRect = new Rectangle(15, 25, 150, 175); // (X, Y, Width, Height)

// Convert and print a Rectangle measurement in millimeters
Rectangle mmCropRect = pxCropRect.ConvertTo(MeasurementUnits.Millimeters, 20);
Console.WriteLine(mmCropRect.X);

// Instantiate a RectangleF in millimeters
IronSoftware.Drawing.RectangleF pxCropRectFloat = new IronSoftware.Drawing.RectangleF(10F, 25F, 100F, 175F, MeasurementUnits.Millimeters); // (X, Y, Width, Height, Units)

// Convert and print a RectangleF measurement in pixels
IronSoftware.Drawing.RectangleF mmCropRectFloat = pxCropRectFloat.ConvertTo(MeasurementUnits.Pixels, 30);
Console.WriteLine(mmCropRectFloat.Y);

Imports IronSoftware.Drawing
Imports System

' Instantiate a Rectangle (Default measurement unit is pixels)
Private pxCropRect As New Rectangle(15, 25, 150, 175) ' (X, Y, Width, Height)

' Convert and print a Rectangle measurement in millimeters
Private mmCropRect As Rectangle = pxCropRect.ConvertTo(MeasurementUnits.Millimeters, 20)
Console.WriteLine(mmCropRect.X)

' Instantiate a RectangleF in millimeters
Dim pxCropRectFloat As New IronSoftware.Drawing.RectangleF(10F, 25F, 100F, 175F, MeasurementUnits.Millimeters) ' (X, Y, Width, Height, Units)

' Convert and print a RectangleF measurement in pixels
Dim mmCropRectFloat As IronSoftware.Drawing.RectangleF = pxCropRectFloat.ConvertTo(MeasurementUnits.Pixels, 30)
Console.WriteLine(mmCropRectFloat.Y)

Install-Package IronSoftware.System.Drawing

转换计量单位

IronDrawing 为想要将Rectangle或RectangleF中使用的测量单位从像素 (px) 更改为毫米 (mm) 或反之亦然的用户提供了一个选项。 Rectangle和RectangleF中使用的默认测量单位是像素 (px)。

在实例化一个具有指定尺寸的新Rectangle后，您可以调用Rectangle转换方法。例如，使用.ConvertTo(MeasurementUnits.Millimeters, 20) 。这会根据用户设置的 DPI 将 Rectangle 的测量值转换为毫米。同样的方法也适用于RectangleF类。