def update(self): self.cache_pattern_img = None self.cache_ps_pattern_img = None self.cache_gray_pattern_img = None self.cache_paths = self.get_initial_paths() self.cache_cpath = libgeom.create_cpath(self.cache_paths) libgeom.apply_trafo(self.cache_cpath, self.trafo) self.update_bbox()
def get_arrow_cpath(arrow, trafo=None):
if trafo is None:
trafo = sk2const.NORMAL_TRAFO
if isinstance(arrow, int):
if not ARROWS_CACHE:
ARROWS_CACHE.extend([None, ] * len(ARROWS))
if not arrow < len(ARROWS):
arrow = 0
if ARROWS_CACHE[arrow] is None:
ARROWS_CACHE[arrow] = libgeom.create_cpath(ARROWS[arrow])
return libgeom.apply_trafo(ARROWS_CACHE[arrow], trafo, True)
ret = None
if arrow and isinstance(arrow, list):
try:
ret = libgeom.create_cpath(arrow)
except Exception:
ret = None
if ret:
return libgeom.apply_trafo(ret, trafo, True)
return ret
def is_point_on_path(self, win_point, path):
self.clear()
trafo = self.get_context_trafo(win_point)
self.ctx.set_matrix(libcairo.get_matrix_from_trafo(trafo))
stroke_width = config.stroke_sensitive_size
stroke_width /= trafo[0]
cpath = libgeom.create_cpath([path, ])
self.ctx.new_path()
self.ctx.append_path(cpath)
self.ctx.set_line_width(stroke_width)
self.ctx.stroke()
return not libcairo.check_surface_whiteness(self.surface)
def is_point_on_path(self, win_point, path):
self.clear()
trafo = self.get_context_trafo(win_point)
self.ctx.set_matrix(libcairo.get_matrix_from_trafo(trafo))
stroke_width = config.stroke_sensitive_size
stroke_width /= trafo[0]
cpath = libgeom.create_cpath([path])
self.ctx.new_path()
self.ctx.append_path(cpath)
self.ctx.set_line_width(stroke_width)
self.ctx.stroke()
return not libcairo.check_surface_whiteness(self.surface)
