FabLab_Chemnitz/mightyscape-1.2
FabLab_Chemnitz/mightyscape-1.2
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clarify DPI stuff

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This commit is contained in:
Mario Voigt 2024-01-23 23:52:40 +01:00
parent 4d9bd49f4b
commit 6eabd22663
1 changed files with 46 additions and 30 deletions
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72
extensions/fablabchemnitz/laser_check/laser_check.py
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@ -509,8 +509,6 @@ class LaserCheck(inkex.EffectExtension):
minDPIhits = []
for image in images:
inkex.utils.debug("image id={}".format(image.get('id')))
self.path = self.checkImagePath(image) # This also ensures the file exists
if self.path is None: # check if image is embedded or linked
image_string = image.get('{http://www.w3.org/1999/xlink}href')
@ -524,38 +522,56 @@ class LaserCheck(inkex.EffectExtension):
else:
img = Image.open(self.path)
if img:
img_w = img.getbbox()[2]
img_h = img.getbbox()[3]
if image.get('width') is None:
img_svg_w = self.svg.unittouu(str(img_w) + "px")
else:
img_svg_w = self.svg.unittouu(str(float(image.get('width'))) + "px")
if image.get('height') is None:
img_svg_h = self.svg.unittouu(str(img_h) + "px")
else:
img_svg_h = self.svg.unittouu(str(float(image.get('height'))) + "px")
imgScaleX = img_svg_w / img_w
imgScaleY = img_svg_h / img_h
dpiX = self.svg.unittouu(str(img_w) + "in") / img_svg_w
dpiY = self.svg.unittouu(str(img_h) + "in") / img_svg_h
img_w = img.getbbox()[2]
img_h = img.getbbox()[3]
if image.get('width') is None:
img_svg_w = self.svg.unittouu(str(img_w) + "px") * inkscapeScale
else:
img_svg_w = self.svg.unittouu(str(float(image.get('width'))) + "px") * inkscapeScale
if image.get('height') is None:
img_svg_h = self.svg.unittouu(str(img_h) + "px") * inkscapeScale
else:
img_svg_h = self.svg.unittouu(str(float(image.get('height'))) + "px") * inkscapeScale
imgScaleX = img_svg_w / img_w
imgScaleY = img_svg_h / img_h
dpiX = self.svg.unittouu(str(img_w) + "in") / img_svg_w
dpiY = self.svg.unittouu(str(img_h) + "in") / img_svg_h
if round(dpiX, 0) < so.min_image_dpi or round(dpiY, 0) < so.min_image_dpi:
minDPIhits.append([image, dpiY, dpiX])
if round(dpiX, 0) > so.max_image_dpi or round(dpiY, 0) > so.max_image_dpi:
maxDPIhits.append([image, dpiY, dpiX])
if round(dpiX, 0) < so.min_image_dpi or round(dpiY, 0) < so.min_image_dpi:
minDPIhits.append([image, dpiX, dpiY, img_svg_w, img_svg_h])
if round(dpiX, 0) > so.max_image_dpi or round(dpiY, 0) > so.max_image_dpi:
maxDPIhits.append([image, dpiX, dpiY, img_svg_w, img_svg_h])
uniform = False
if round(imgScaleX, 3) == round(imgScaleY, 3):
uniform = True
else:
malformedScales.append([image, imgScaleX, imgScaleY])
inkex.utils.debug("image id={} - internal size {}x{}px - scaled to {:0.0f}x{:0.0f}px - DPI X{:0.0f}+Y{:0.0f}".format(image.get('id'), img_w, img_h, img_svg_w, img_svg_h, dpiX, dpiY))
uniform = False
if round(imgScaleX, 3) == round(imgScaleY, 3):
uniform = True
else:
malformedScales.append([image, imgScaleX, imgScaleY])
if len(minDPIhits) > 0:
for minDPIhit in minDPIhits:
inkex.utils.debug("Image {} has DPI X{:0.0f}+Y{:0.0f} < min. {:0.0f}".format(minDPIhit[0].get('id'), minDPIhit[1], minDPIhit[2], so.min_image_dpi))
inkex.utils.debug("Image {} has DPI X{:0.0f}+Y{:0.0f} < min. {:0.0f}. "\
"Resize to {:0.0f}x{:0.0f}px to fit".format(
minDPIhit[0].get('id'),
minDPIhit[1],
minDPIhit[2],
so.min_image_dpi,
minDPIhit[3] * (minDPIhit[1] / so.min_image_dpi),
minDPIhit[4] * (minDPIhit[2] / so.min_image_dpi),
))
if len(maxDPIhits) > 0:
for maxDPIhit in maxDPIhits:
inkex.utils.debug("Image {} has DPI X{:0.0f}+Y{:0.0f} > max. {:0.0f}".format(maxDPIhit[0].get('id'), maxDPIhit[1], maxDPIhit[2],so.max_image_dpi))
inkex.utils.debug("Image {} has DPI X{:0.0f}+Y{:0.0f} > max. {:0.0f}. "\
"Resize to {:0.0f}x{:0.0f}px to fit".format(
maxDPIhit[0].get('id'),
maxDPIhit[1],
maxDPIhit[2],
so.max_image_dpi,
maxDPIhit[3] * (maxDPIhit[1] / so.max_image_dpi),
maxDPIhit[4] * (maxDPIhit[2] / so.max_image_dpi),
))
if len(malformedScales) > 0:
for malformedScale in malformedScales:
inkex.utils.debug("Image {} has non-uniform scale X = {:0.3f}, Y = {:0.3f}".format(malformedScale[0].get('id'), malformedScale[1], malformedScale[2]))