diff options
Diffstat (limited to 'gerberex/dxf.py')
| -rw-r--r-- | gerberex/dxf.py | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/gerberex/dxf.py b/gerberex/dxf.py index 95a3114..2341092 100644 --- a/gerberex/dxf.py +++ b/gerberex/dxf.py @@ -51,12 +51,13 @@ def _intersections_of_line_and_circle(start, end, center, radius, error_range): dr = sqrt(dx * dx + dy * dy) D = x1 * y2 - x2 * y1 + distance = abs(dy * x1 - dx * y1) / dr + D2 = D * D dr2 = dr * dr r2 = radius * radius delta = r2 * dr2 - D2 - e4 = error_range * error_range * error_range * error_range * 10 - if delta > - e4 and delta < e4: + if distance > radius - error_range and distance < radius + error_range: delta = 0 if delta < 0: return None @@ -198,7 +199,7 @@ class DxfLineStatement(DxfStatement): denominator = (self.end[0] - self.start[0]) * (point_to[1] - point_from[1]) - \ (self.end[1] - self.start[1]) * (point_to[0] - point_from[0]) de = error_range * error_range - if denominator > -de and denominator < de: + if denominator >= -de and denominator <= de: return [] from_dx = point_from[0] - self.start[0] from_dy = point_from[1] - self.start[1] @@ -356,16 +357,25 @@ class DxfArcStatement(DxfStatement): elif p2 is not None and is_equal_point(p2, self.start, error_range): p2 = None + def is_contained(angle, region, error): + if angle >= region[0] - error and angle <= region[1] + error: + return True + if angle < 0 and region[1] > 0: + angle = angle + 2 * pi + elif angle > 0 and region[0] < 0: + angle = angle - 2 * pi + return angle >= region[0] - error and angle <= region[1] + error + aerror = error_range * self.radius pts = [] if p1 is not None and p1_t >= 0 and not is_equal_point(p1, self.start, error_range): for region in self.angle_regions: - if p1_angle >= region[0] - aerror and p1_angle <= region[1] + aerror: + if is_contained(p1_angle, region, aerror): pts.append(p1) break if p2 is not None and p2_t >= 0 and not is_equal_point(p2, self.start, error_range): for region in self.angle_regions: - if p2_angle >= region[0] - aerror and p2_angle <= region[1] + aerror: + if is_contained(p2_angle, region, aerror): pts.append(p2) break |