render pixel

by **Guest** » Sep 25, 2003 @ 10:36am

hi!
i want to draw "double-values",for example want to draw a point at 3.55 in x direction and 3.67 in y direction, but with SetPixel my point would be set
at 3,3 because SetPixel use long values.

thanks

by **Pejo Software - Per** » Sep 25, 2003 @ 11:52am

This really doesn't make any sense to me!
Isn't pixels by nature integer values? On a Pocket PC there are 240x320 pixels!

Are you trying to do some kind of antialiasing?

by **ppcStudios** » Sep 25, 2003 @ 11:54am

SetPixel will always render on integer pixel boundaries. If you wanted to work with floating point values you would need to multiply each coordinate by a fixed factor then cast the result. For example:

x = 3.55
y = 3.67

_x = (DWORD)(x * 100);
_y = (DWORD)(y * 100);

This would now make x = 355 and y = 367. You would then need to somehow scale these values to fit the display size of the device, or simply not draw any values outside of the display size (eg they are considered offscreen points).

Hope this is what you were looking for.

by **mlepage** » Sep 25, 2003 @ 4:13pm

by **mlepage** » Sep 25, 2003 @ 4:15pm

by **Pam** » Sep 25, 2003 @ 4:47pm

And if you want to make it appear less discrete, check out Wu Particles at

Pam

by **mlepage** » Sep 25, 2003 @ 5:01pm

by **Pejo Software - Per** » Sep 25, 2003 @ 9:04pm

by **mlepage** » Sep 25, 2003 @ 9:58pm

by **Pejo Software - Per** » Sep 25, 2003 @ 10:11pm

render pixel

render pixel

render pixel

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