diff options
Diffstat (limited to 'gerber/render')
| -rw-r--r-- | gerber/render/render.py | 19 | ||||
| -rw-r--r-- | gerber/render/svgwrite_backend.py | 7 |
2 files changed, 25 insertions, 1 deletions
diff --git a/gerber/render/render.py b/gerber/render/render.py index 48a53f8..f7e4485 100644 --- a/gerber/render/render.py +++ b/gerber/render/render.py @@ -83,6 +83,9 @@ class GerberContext(object): background_color : tuple (<float>, <float>, <float>) Color of the background. Used when exposing areas in 'clear' level polarity mode. Format is the same as for `color`. + + alpha : float + Rendering opacity. Between 0.0 (transparent) and 1.0 (opaque.) """ def __init__(self): self.settings = {} @@ -100,7 +103,8 @@ class GerberContext(object): self.color = (0.7215, 0.451, 0.200) self.drill_color = (0.25, 0.25, 0.25) self.background_color = (0.0, 0.0, 0.0) - + self.alpha = 1.0 + def set_format(self, settings): """ Set source file format. @@ -260,6 +264,19 @@ class GerberContext(object): """ self.background_color = color + def set_alpha(self, alpha): + """ Set layer rendering opacity + + .. note:: + Not all backends/rendering devices support this parameter. + + Parameters + ---------- + alpha : float + Rendering opacity. must be between 0.0 (transparent) and 1.0 (opaque) + """ + self.alpha = alpha + def resolve(self, x, y): """ Resolve missing x or y coordinates in a coordinate command. diff --git a/gerber/render/svgwrite_backend.py b/gerber/render/svgwrite_backend.py index 886b4f8..78961da 100644 --- a/gerber/render/svgwrite_backend.py +++ b/gerber/render/svgwrite_backend.py @@ -117,6 +117,7 @@ class GerberSvgContext(GerberContext): self.apertures = {} self.dwg = svgwrite.Drawing() + self.dwg.transform = 'scale 1 -1' self.background = False self.region_path = None @@ -124,11 +125,17 @@ class GerberSvgContext(GerberContext): xbounds, ybounds = bounds size = (SCALE * (xbounds[1] - xbounds[0]), SCALE * (ybounds[1] - ybounds[0])) if not self.background: + self.dwg = svgwrite.Drawing(viewBox='%f, %f, %f, %f' % (SCALE*xbounds[0], -SCALE*ybounds[1],size[0], size[1])) self.dwg.add(self.dwg.rect(insert=(SCALE * xbounds[0], -SCALE * ybounds[1]), size=size, fill=convert_color(self.background_color))) self.background = True + def set_alpha(self, alpha): + super(GerberSvgContext, self).set_alpha(alpha) + import warnings + warnings.warn('SVG output does not support transparency') + def define_aperture(self, d, shape, modifiers): aperture = None if shape == 'C': |