Add CLI

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