I'm a VB.NET newbie. I've created a program that plots pixels at random on
the form. I have a 19" LCD monitor with a resolution set to 1280 by 1024. If
you do the math, that means that there are over 1.3 million pixels. In one
version of the program, the pixels start plotting at the upper-left & go down
the form from top to bottom & left to right. In another version, the pixels
are plotted at random. I have a 2.4 GHZ Athlon 64 with 1 gigabyte of RAM. If
DrawImage is inside the For-Next loop, I can see the pixels being plotted.
It's sooo slooow! If DrawImage is outside of the For-Next loop, I sit & stare
at a blank form until the image is drawn. Unfortunately, there is no Pset or
its .NET equivalent. Microsoft in its infinite wisdom chose to not include
it. I want to be able to create a program that can draw fractals. I know that
fractal calculations are time-consuming. I don't want to have to wait for
hours to see a fractal. Is there a faster way to plot individual pixels
without having to resort to using Bitmap? Remember, I'm a newbie. I don't
want a complicated convoluted way to draw pixels. Can I create an object
that will plot pixels faster than Bitmap or am I out of luck? What is the
Path object? Can I use that to plot individual pixels? Thank you. David
Jul 7 '06
10  3311 
Sorry I'm not currently in a position to open a windows app.
What you need will be found in the System.Drawing and
System.Drawing. Drawing2D namespaces. Its all called GDI+ . There will
be methods that are part of the Graphics class that enable you to draw
rectangles, arcs, circles, lines, etc. There should be one to draw a
dot as well.
You will need to realise though that once you paint it, it isn't a
permanent fixture on the form. If the form refreshes, or something
paints over it (ie another form, alert or whatever) then your drawn
pixels are gone. To get around this, you put your painting instructions
in the OnPaint event of your form/panel/wherever you want to paint to.
Let me know how you get on. I wanted at one stage to write a fractal
generater in .NET but never got around to it. And of course I found a
million of them on the net and decided there was no merit to it. Not
sure if this has been done before, but a newer idea might be to create
3D fractals in DIRECTX... now that would be mind blowing!
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