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render to openscad: render obstacles

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Laura Klünder 2017-08-07 16:13:35 +02:00
parent 5f848104a2
commit 2573ffc05b
1 changed files with 41 additions and 16 deletions
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57
src/c3nav/mapdata/models/level.py
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@ -196,6 +196,25 @@ class Level(SpecificLocation, models.Model):
return cascaded_union(tuple(item.geometry.buffer(0)
for item in chain(self.altitudeareas.all(), self.buildings.all()))).bounds
def _render_scad_polygon(self, f, geometry, altitude, height=Decimal('0.0'), low_clip=()):
for low_altitude, low_area in low_clip:
intersection = geometry.intersection(low_area)
if not intersection.is_empty:
geometry = geometry.difference(intersection)
low_height = max(altitude - low_altitude, 0)
total_heght = low_height+height
if total_heght:
f.write(' ')
f.write('translate([0, 0, %.2f]) ' % (altitude - low_height))
f.write('linear_extrude(height=%.2f, center=false, convexity=20) ' % total_heght)
f.write(polygon_scad(intersection) + ';\n')
if not geometry.is_empty:
f.write(' ')
f.write('translate([0, 0, %.2f]) ' % (altitude - Decimal('0.5')))
f.write('linear_extrude(height=%.2f, center=false, convexity=20) ' % (height+Decimal('0.5')))
f.write(polygon_scad(geometry) + ';\n')
def _render_scad(self, f, low_clip=(), spaces=None, request=None):
if spaces is None:
from c3nav.mapdata.models import Area, Space
@ -206,22 +225,28 @@ class Level(SpecificLocation, models.Model):
)
for area in self.altitudeareas.all():
geometry = area.geometry
for low_altitude, low_area in low_clip:
intersection = geometry.intersection(low_area)
if not intersection.is_empty:
geometry = geometry.difference(intersection)
width = max(area.altitude - low_altitude, 0)
if width:
f.write(' ')
f.write('translate([0, 0, %.2f]) ' % (area.altitude - width))
f.write('linear_extrude(height=%.2f, center=false, convexity=20) ' % width)
f.write(polygon_scad(area.geometry) + ';\n')
if not geometry.is_empty:
f.write(' ')
f.write('translate([0, 0, %.2f]) ' % (area.altitude - Decimal('0.5')))
f.write('linear_extrude(height=0.5, center=false, convexity=20) ')
f.write(polygon_scad(area.geometry) + ';\n')
area.geometry = area.geometry.buffer(0)
self._render_scad_polygon(f, area.geometry, area.altitude, low_clip=low_clip)
draw_obstacles = {}
for space in spaces:
for lineobstacle in space.lineobstacles.all():
lineobstacle.geometry = lineobstacle.buffered_geometry
for obstacle in chain(space.obstacles.all(), space.lineobstacles.all()):
geometry = obstacle.geometry.intersection(space.geometry)
for altitudearea in self.altitudeareas.all():
intersection = geometry.intersection(altitudearea.geometry)
if not intersection.is_empty:
geometry = geometry.difference(intersection.buffer(0.001, join_style=JOIN_STYLE.mitre))
draw_obstacles.setdefault((altitudearea.altitude, obstacle.height), []).append(intersection)
if not geometry.is_empty:
for polygon in assert_multipolygon(geometry):
center = polygon.centroid
altitude = min(self.altitudeareas.all(), key=lambda a: a.geometry.distance(center)).altitude
draw_obstacles.setdefault((altitude, obstacle.height), []).append(polygon)
for (altitude, height), polygons in draw_obstacles.items():
self._render_scad_polygon(f, cascaded_union(polygons), altitude, height, low_clip=low_clip)
@classmethod
def render_scad_all(cls, levels=None, request=None):