如何在创建自己的图表时使用缩放? [英] How Can I Use Scaling While Creating My Own Chart?
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问题描述
我在表格和两条线相交的点上绘制了两条线和一条圆,我想使用缩放将该点作为中心。
我该怎么做?
以下是我绘制的两条线和圆圈。
e.Graphics.DrawLine(Pens.Black, 186 , 210 , 471 , 210 )
e.Graphics.DrawLine(Pens.Black, 330 , 82 , 330 , 348 )
e.Graphics。 DrawEllipse(Pens.Black, 210 , 100 , 240 , 220 )
两条线相交的点是330,210
解决方案
我不确定我理解你很好,但是...
如果你想操纵图形,你需要创建设备上下文。然后你就可以操作这个图了。
看看这里:
缩放图像 [ ^ ]
< a href =http://msdn.microsoft.com/en-us/library/hf85w92t%28v=vs.90%29.aspx> .NET Compact Framework中的图形和绘图 [ ^ ]
Graphics.ScaleTransform Method [ ^ ]
位图,设备上下文和绘图表面 [ ^ ]
关于设备上下文 [ ^ ]
Graphics.GetHdc方法 [ ^ ]
如何:创建缩放效果 [ ^ ]
更多:
如何:裁剪和缩放图像 [ ^ ]
如何:使用插值模式在缩放期间控制图像质量 [ ^ ]
Windows窗体中的自动缩放 [ ^ ]
I have drawn two lines and a circle on the form and on the point where two lines intersect i want to use scaling taking that point as center.
How can i do this?
Here are the two lines and circles i have drawn.
e.Graphics.DrawLine(Pens.Black, 186, 210, 471, 210)
e.Graphics.DrawLine(Pens.Black, 330, 82, 330, 348)
e.Graphics.DrawEllipse(Pens.Black, 210, 100, 240, 220)
The point where two lines are intersecting are 330,210
解决方案
I'm not sure i understand you well, but...
If you want to manipulate graphic, you need to create device context. Then you'll be able to manipulate this graphic.
Have a look here:
Scaling an Image[^]
Graphics and Drawing in the .NET Compact Framework[^]
Graphics.ScaleTransform Method [^]
Bitmaps, Device Contexts, and Drawing Surfaces[^]
About Device Contexts[^]
Graphics.GetHdc Method[^]
How to: Create a Zoom Effect[^]
More:
How to: Crop and Scale Images[^]
How to: Use Interpolation Mode to Control Image Quality During Scaling[^]
Automatic Scaling in Windows Forms[^]
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