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Editorial Team
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Asked: 2026-05-30T21:32:21+00:00

Question: How can I taken into account the rectangular shape of the screen to

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Question:

How can I taken into account the rectangular shape of the screen to ensure that circles are drawn exactly to the padded boundary?

The following works for a ’round’ area, but not a rectangular one…

dx = abs(center.x - place.x);
dy = abs(center.y - place.y);
dh = Math.sqrt((dx * dx) + (dy * dy));
radius = dh - padding;

Halo Design:
Halo idea

If the problem doesn’t seem apparent, the following image represents the current approach which i’m using. Depending on where the place is effects how far it protrudes into the screen space.
enter image description here

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1 Answer

  1. Editorial Team

    I think this should work. Not tested. 

    dx = abs(placeLocationPixels.x - ourLocationPixels.x)
dy = abs(placeLocationPixels.y - ourLocationPixels.y)

ox = dx - ((screenSize.x / 2) - padding);
oy = dy - ((screenSize.y / 2) - padding);

if (ox < 0) ox = 0;
if (oy < 0) oy = 0;

radius = sqrt((ox*ox) + (oy*oy));

    edit: this is not in any particular language.

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