Graphical Displays with PBP3

[rocket_troy]

Richard,
Received my 5110 display today and have just started to have a play. The nokia demo appears to display perfectly - excellent. I'm a bit stumped on one thing I'm trying to do. The nokia demo draws a circle:

DRAWCIRCLE 64,15,12

which I assume is a circle located a x=64, y=15 and radius of 12 yeah?

so I'm trying to draw a line from the centre of the circle to the top of the circle (or vice versa) so I tried:

DRAWLINE 64,3,64,15,1

which I assume is drawing a line from starting point X=64, Y=3 to ending point X=64, Y=15

And indeed the line starts at the correct point (top centre) but only extends down 7 or 8 pixels ie not to centre of the circle?

Any ideas?

Regards,

Troy

[rocket_troy]

So, what's happening (for me) is for a line that's wider than it is higher (or equal), it appears from very initial testing to draw correctly. But if it's higher than it is wider, it doesn't?

Troy

[richard]

it appears there was a bug in drawing vertical lines. this now works

[rocket_troy]

Excellent! Hats off again Richard. This looked like a lot of work in putting it all together. If we ever meet, the drinks will definitely be on me!

Troy

[rocket_troy]

Richard,
Another question: can we pass variables as parameters to these geometric routines?

Like:

DRAWLINE My_x1, My_y1, My_x2, My_y2, 1

So far I'm trying to pass byte size variables but getting illegal opcode messages at compile?

Troy

[richard]

Another question: can we pass variables as parameters to these geometric routines?

EASY , Just add the needed macro's to the include file, you can dial up whatever you like

http://www.picbasic.co.uk/forum/show...hlight=ssd1306
http://www.picbasic.co.uk/forum/show...hlight=usercmd
http://support.melabs.com/forum/picb...er/usercommand

[rocket_troy]

EASY , Just add the needed macro's to the include file, you can dial up whatever you like

oookay