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Fix scaling and positioning issue

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jaseg 2017-11-26 12:25:51 +01:00
parent f078963e6e
commit b0df323c11
1 changed files with 9 additions and 14 deletions
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23
gerbimg.py
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@ -53,10 +53,10 @@ def paste_image(
status_print('Combining keepout composite')
fg, bg = gerber.render.RenderSettings((1, 1, 1)), gerber.render.RenderSettings((0, 0, 0))
ctx = GerberCairoContext(scale=scale)
status_print(' * target layer')
ctx.render_layer(target, settings=fg, bgsettings=bg)
status_print(' * outline')
ctx.render_layer(outline, settings=fg, bgsettings=bg)
status_print(' * target layer')
ctx.render_layer(target, settings=fg, bgsettings=bg)
for fn, sub in subtract_gerber:
status_print(' * extra layer', fn)
layer = gerber.loads(sub)
@ -79,31 +79,26 @@ def paste_image(
status_print('Padding source image')
tgth, tgtw = target_img.shape
padded_img = np.zeros(shape=(max(imgh, tgth), max(imgw, tgtw)), dtype=source_img.dtype)
padded_img = np.zeros(shape=target_img.shape, dtype=source_img.dtype)
offx = int((minx-tminx if tminx < minx else 0)*scale)
offy = int((miny-tminy if tminy < miny else 0)*scale)
offx += int(grbw*scale - imgw) // 2
offy += int(grbh*scale - imgh) // 2
padded_img[offy:offy+imgh, offx:offx+imgw] = source_img
endx, endy = min(offx+imgw, tgtw), min(offy+imgh, tgth)
padded_img[offy:endy, offx:endx] = source_img[:endy-offy, :endx-offx]
debugimg(padded_img, 'padded')
status_print('Padding target image')
padded_target = np.zeros(shape=padded_img.shape, dtype=source_img.dtype)
offx = int(max(tminx, 0)*scale)
offy = int(max(tminy, 0)*scale)
padded_target[offy:offy+tgth, offx:offx+tgtw] = target_img
debugimg(target_img, 'target')
debugimg(padded_target, 'target_padded')
print('off', (offx, offy), 'end', (endx, endy), 'img', (imgw, imgh), 'tgt', (tgtw, tgth))
status_print('Masking source image')
out_img = (np.multiply((padded_img/255.0), (padded_target/255.0) * -1 + 1) * 255).astype(np.uint8)
out_img = (np.multiply((padded_img/255.0), (target_img/255.0) * -1 + 1) * 255).astype(np.uint8)
debugimg(out_img, 'multiplied')
status_print('Calculating contour lines')
plot_contours(out_img,
target,
offx=(min(tminx, minx), min(tminy, miny)),
offx=(0, 0),
scale=scale,
status_print=lambda *args: status_print(' ', *args))
@ -132,7 +127,7 @@ def plot_contours(
aperture = list(layer.apertures)[0]
from gerber.primitives import Line, Region
debug('offx', offx, 'scale', scale)
status_print('offx', offx, 'scale', scale)
xbias, ybias = offx
def map(coord):