diff options
Diffstat (limited to 'gerber/render/apertures.py')
| -rw-r--r-- | gerber/render/apertures.py | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/gerber/render/apertures.py b/gerber/render/apertures.py index f163b1f..52ae50c 100644 --- a/gerber/render/apertures.py +++ b/gerber/render/apertures.py @@ -22,16 +22,31 @@ gerber.render.apertures This module provides base classes for gerber apertures. These are used by the rendering engine to draw the gerber file. """ - +import math class Aperture(object): """ Gerber Aperture base class """ def draw(self, ctx, x, y): - raise NotImplementedError('The draw method must be implemented in an Aperture subclass.') + raise NotImplementedError('The draw method must be implemented \ + in an Aperture subclass.') def flash(self, ctx, x, y): - raise NotImplementedError('The flash method must be implemented in an Aperture subclass.') + raise NotImplementedError('The flash method must be implemented \ + in an Aperture subclass.') + + def _arc_params(self, startx, starty, x, y, i, j): + center = (startx + i, starty + j) + radius = math.sqrt(math.pow(center[0] - x, 2) + + math.pow(center[1] - y, 2)) + delta_x0 = startx - center[0] + delta_y0 = center[1] - starty + delta_x1 = x - center[0] + delta_y1 = center[1] - y + start_angle = math.atan2(delta_y0, delta_x0) + end_angle = math.atan2(delta_y1, delta_x1) + return {'center': center, 'radius': radius, + 'start_angle': start_angle, 'end_angle': end_angle} class Circle(Aperture): |