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Hi all,

I'm relatively new to C# and very new to C# graphics and am trying to produce a graphical output for some optimisation routines I'm experimenting with (I'm a bit more experienced in mathematics). Trying to work this out with Google has been frustrating - have had little success and am not even sure it's doable (but surely it is).

My problem is around automatically rendering objects designed in one dimension onto an object with a set scale and transformation.

Essentially I want to do the following:

- I will be working and making calculations purely in 2D on a (0,0) to (a,b) space and wish to keep the origin (0,0) at the bottom left for argument's sake. When I output anything, it has to be scaled and transformed onto the graphics object (say a panel) on my Windows form (which as far as I can see has (0,0) at the top left and arbitrary dimensions related to its actual size).

- generate and display some random shapes (ellipses and rectangles). I can do this (not too hard) but can't get my head around generating them in my working dimensions and displaying them on my graphics surface automatically without having to scale/transform them before rendering.

As an example:

- say I'm working/calculating on a x/y space from (0,0) to (100,100) with (0,0) at the bottom left.

- the object for display (say a panel) on my windows form has dimensions (0,0) top left down to (200,300) bottom right.

- I create a circle in my working space to have centre at (50,50) and radius 10 (right in the middle of my working space).

- Now I want to display this in the middle of the panel as if it had my working space dimensions, with C# automatically doing the transformations such that it will appear to scale and with the origin at the bottom.

I hope this makes sense. Any help will be very gratefully received.

Many regards,
David (Sydney)
Updated 21-Jan-15 17:26pm

1 solution

I think you can get some good information here:
Professional C# - Graphics with GDI+[^]

And maybe here:[^]
Member 11393012 22-Jan-15 0:53am
Hello George - many thanks for responding so quickly. I'm slowly getting through your links and fingers crossed will unravel these mysteries before I get old. :-)
George Jonsson 23-Jan-15 3:11am
It takes some time to get into GDI+.
Glad you found the links useful.

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