Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 442
  • Last Modified:

Circle Segment

I have a drawn a circle and i want to draw a line from the middlepoint of the circle given the angle to the end of the circle (like a speedmeter). I use the following formula but can't get it working...Ellipse(0, 0, Radius, Radius);X := round(cos(PI * Angle / 180) * Radius / 2);Y := round(sin(PI * Angle / 180) * Radius / 2);MoveTo( round(Radius / 2), round(Radius / 2));LineTo( X, Y);with regards, Ronald
0
rvaken
Asked:
rvaken
1 Solution
 
mirek071497Commented:
You must change calculate for X and Y.

X := round(cos(PI * Angle / 180) * Radius / 2 + Radius/2);
Y := round(sin(PI * Angle / 180) * Radius / 2+ Radius/2);

This is because Ellipse( x1,y1,x2,y2 ) draw ellipse bounded on rectangle. (not Ellipse( x1,y1,r1,r2) !!! );


0
 
rvakenAuthor Commented:
Thanks, mirek... I lost the clue's... Couldn't see the prob anymore... :)
0

Featured Post

[Webinar On Demand] Database Backup and Recovery

Does your company store data on premises, off site, in the cloud, or a combination of these? If you answered “yes”, you need a data backup recovery plan that fits each and every platform. Watch now as as Percona teaches us how to build agile data backup recovery plan.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now