From 4ba3cd708561870a731d9634d9cdd5c18579cac7 Mon Sep 17 00:00:00 2001 From: Lex Neva Date: Fri, 22 Feb 2019 22:07:15 -0500 Subject: refactor add_commands() out into commands module --- lib/svg/realistic_rendering.py | 130 ----------------------------------------- 1 file changed, 130 deletions(-) delete mode 100644 lib/svg/realistic_rendering.py (limited to 'lib/svg/realistic_rendering.py') diff --git a/lib/svg/realistic_rendering.py b/lib/svg/realistic_rendering.py deleted file mode 100644 index 73da3a09..00000000 --- a/lib/svg/realistic_rendering.py +++ /dev/null @@ -1,130 +0,0 @@ -import simplepath -import math - -from .units import PIXELS_PER_MM -from ..utils import Point - -# The stitch vector path looks like this: -# _______ -# (_______) -# -# It's 0.32mm high, which is the approximate thickness of common machine -# embroidery threads. - -# 1.216 pixels = 0.32mm -stitch_height = 1.216 - -# This vector path starts at the upper right corner of the stitch shape and -# proceeds counter-clockwise.and contains a placeholder (%s) for the stitch -# length. -# -# It contains two invisible "whiskers" of zero width that go above and below -# to ensure that the SVG renderer allocates a large enough canvas area when -# computing the gaussian blur steps. Otherwise, we'd have to expand the -# width and height attributes of the tag to add more buffer space. -# The width and height are specified in multiples of the bounding box -# size, It's the bounding box aligned with the global SVG canvas's axes, not -# the axes of the stitch itself. That means that having a big enough value -# to add enough padding on the long sides of the stitch would waste a ton -# of space on the short sides and significantly slow down rendering. -stitch_path = "M0,0c0.4,0,0.4,0.3,0.4,0.6c0,0.3,-0.1,0.6,-0.4,0.6v0.2,-0.2h-%sc-0.4,0,-0.4,-0.3,-0.4,-0.6c0,-0.3,0.1,-0.6,0.4,-0.6v-0.2,0.2z" - -# This filter makes the above stitch path look like a real stitch with lighting. -realistic_filter = """ - - - - - - - - - - - - - - - - - - -""" - - -def realistic_stitch(start, end): - """Generate a stitch vector path given a start and end point.""" - - end = Point(*end) - start = Point(*start) - - stitch_length = (end - start).length() - stitch_center = (end + start) / 2.0 - stitch_direction = (end - start) - stitch_angle = math.atan2(stitch_direction.y, stitch_direction.x) - - stitch_length = max(0, stitch_length - 0.2 * PIXELS_PER_MM) - - # create the path by filling in the length in the template - path = simplepath.parsePath(stitch_path % stitch_length) - - # rotate the path to match the stitch - rotation_center_x = -stitch_length / 2.0 - rotation_center_y = stitch_height / 2.0 - simplepath.rotatePath(path, stitch_angle, cx=rotation_center_x, cy=rotation_center_y) - - # move the path to the location of the stitch - simplepath.translatePath(path, stitch_center.x - rotation_center_x, stitch_center.y - rotation_center_y) - - return simplepath.formatPath(path) -- cgit v1.2.3