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authorjaseg <git@jaseg.de>2023-02-17 00:03:04 +0100
committerjaseg <git@jaseg.de>2023-02-17 00:03:04 +0100
commitf64b03efc752b682b1cbe8cfb114f19e3362ef76 (patch)
tree182bfb4e9b23766d00f255f4d50b183a4d525bcf /gerbonara/graphic_objects.py
parentfb52e104081138a1f6abb8f6c9f7d0c6c2439c1e (diff)
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-rw-r--r--gerbonara/graphic_objects.py42
1 files changed, 42 insertions, 0 deletions
diff --git a/gerbonara/graphic_objects.py b/gerbonara/graphic_objects.py
index 0e433cf..4fa5fce 100644
--- a/gerbonara/graphic_objects.py
+++ b/gerbonara/graphic_objects.py
@@ -105,6 +105,21 @@ class GraphicObject:
dx, dy = self.unit(dx, unit), self.unit(dy, unit)
self._offset(dx, dy)
+ def scale(self, sx, sy, unit=MM):
+ """ Scale this feature in both its dimensions and location.
+
+ .. note:: The scale values are scalars, and the unit argument is irrelevant, but is kept for API consistency.
+
+ .. note:: If this object references an aperture, this aperture is not modified. You will have to transform this
+ aperture yourself.
+
+ :param float sx: X scale, 1 to keep the object as is, larger values to enlarge, smaller values to shrink.
+ Negative values are permitted.
+ :param float sy: Y scale as above.
+ """
+
+ self._scale(sx, sy)
+
def rotate(self, rotation, cx=0, cy=0, unit=MM):
""" Rotate this object. The center of rotation can be given in either unit, and is automatically converted into
this object's local unit.
@@ -112,6 +127,9 @@ class GraphicObject:
.. note:: The center's Y coordinate as well as the angle's polarity are flipped compared to computer graphics
convention since Gerber uses a bottom-to-top Y axis.
+ .. note:: If this object references an aperture, this aperture is not modified. You will have to transform this
+ aperture yourself.
+
:param float rotation: rotation in radians clockwise.
:param float cx: X coordinate of center of rotation in *unit* units.
:param float cy: Y coordinate of center of rotation. (0,0) is at the bottom left of the image.
@@ -214,6 +232,10 @@ class Flash(GraphicObject):
def _rotate(self, rotation, cx=0, cy=0):
self.x, self.y = gp.rotate_point(self.x, self.y, rotation, cx, cy)
+ def _scale(self, sx, sy):
+ self.x *= sx
+ self.y *= sy
+
def to_primitives(self, unit=None):
conv = self.converted(unit)
yield from self.aperture.flash(conv.x, conv.y, unit, self.polarity_dark)
@@ -281,6 +303,12 @@ class Region(GraphicObject):
(arc[0], gp.rotate_point(*arc[1], angle, cx-p[0], cy-p[1])) if arc else None
for p, arc in zip(self.outline, self.arc_centers) ]
+ def _scale(self, sx, sy):
+ self.outline = [ (x*sx, y*sy) for x, y in self.outline ]
+ self.arc_centers = [
+ (arc[0], (arc[1][0]*sx, arc[1][1]*sy)) if arc else None
+ for p, arc in zip(self.outline, self.arc_centers) ]
+
def append(self, obj):
if obj.unit != self.unit:
obj = obj.converted(self.unit)
@@ -379,6 +407,12 @@ class Line(GraphicObject):
self.x1, self.y1 = gp.rotate_point(self.x1, self.y1, rotation, cx, cy)
self.x2, self.y2 = gp.rotate_point(self.x2, self.y2, rotation, cx, cy)
+ def _scale(self, sx=1, sy=1):
+ self.x1 *= sx
+ self.y1 *= sy
+ self.x2 *= sx
+ self.y2 *= sy
+
@property
def p1(self):
""" Convenience alias for ``(self.x1, self.y1)`` returning start point of the line. """
@@ -611,6 +645,14 @@ class Arc(GraphicObject):
self.x2, self.y2 = gp.rotate_point(self.x2, self.y2, rotation, cx, cy)
self.cx, self.cy = new_cx - self.x1, new_cy - self.y1
+ def _scale(self, sx=1, sy=1):
+ self.x1 *= sx
+ self.y1 *= sy
+ self.x2 *= sx
+ self.y2 *= sy
+ self.cx *= sx
+ self.cy *= sy
+
def as_primitive(self, unit=None):
conv = self.converted(unit)
w = self.aperture.equivalent_width(unit) if self.aperture else 0.1 # for debugging