system.drawing

I'd like to update a list of points (PointFs) by performing a rotation (around a new origin) and translating each point by an amount that is proportional to its current distance from the origin (so not an absolute translation). I currently do this for each point in turn but performance is poor when moving more than a handful of points. I'd like to make the transformation more efficient so wanted to use a matrix. The rotation is no problem, but I don't know how to do the proportional translation. Can I do this with an affine matrix? Is there some other way to do the transformation more

Update: I would like to answer my own question with code that helped me solve the issue. It was submitted by Bradley but tweaked to work for me and may help others as well. But I can't answer until it is reopened. The linked duplicate provides a method, but no code. A code based answer to this question would be helpful to the community I'm having some slight issues with the formatting of the text drawn on an image inside of my console application. The text I'm trying to draw is: BAS2016=PTR=E30BAS2010=(S20)$W30$PTO2016=N5W20N5(W20N10)(S10W20)S5W5S5E10N10(E15N5)(S5E15)S10E25$W25N10(W15N5)(S5W15

I'm new to C# and .net, just trying to work out how to do something that I thought would be relatively simple. I'm creating a bitmap to be later saved as an image to disk, part of it I want to draw a rectangle shape. I can do this, however I'm looking for a simple way to do this on an angle. I need to be able to specify an angle to draw the rectangle at, I also need to be able to to specify the rotation point (I need to rotate around the top left hand point of the rectangle). How is this usually achieved with c#/.net, is there something built in for this sort of thing that I haven't found ?

I am doing a little graphing via the System.Drawing and im having a few problems. I'm holding data in a Queue and i'm drawing(graphing) out that data onto three picture boxes this method fills the picture box then scrolls the graph across. so not to draw on top of the previous drawings (and graduly looking messier) i found 2 solutions to draw the graph. Call plot.Clear(BACKGOUNDCOLOR) before the draw loop [block commented] although this causes a flicker to appear from the time it takes to do the actual drawing loop. call plot.DrawLine(channelPen[5], j, 140, j, 0); just before each drawline

I'm trying to get the correct details of trays of various printers however have come across a problem. After a bit of research I've added the ReachFramework.dll and also using System.Drawing.Printing; To get the names of the trays for a printer I run the following code... PrintDocument printDocument = new PrintDocument(); printDocument.PrinterSettings.PrinterName = "<Windows Printer Name>"; foreach (PaperSource paperSource in printDocument.PrinterSettings.PaperSources) { Console.WriteLine(paperSource.ToString()); } ...replacing 'Windows Printer Name'. For some printers it works great and I get

In creating a drawing application or a simulation containing thousands of shapes, it is advised to used classes derived from Visual (like DrawingVisual) instead of classes derived from Shape due to performance degradation. I want to know how much is the performance degradation and is majority of it due to FrameworkElement class in the hierarchy of derived classes? And what is the threshold beyond which one should decide using Visual instead of Shape? And what are the pros and cons of losing UIElement and FrameworkElement in the chain? The Drawing derived classes are all much lighter weight