要在版图上加中文，如：
可以通过如下方法实现：
首先，可以在ppt中加入文本框，在文本框中输入想要加到版图上的中文内容，如，复旦大学，并将文本框存为windows位图。
其次，通过如下代码就可以得到中文对应的版图：
# Copyright (C) 2021 Luceda
from technologies import silicon_photonics
import ipkiss3.all as i3PIL_loaded = False
try:from PIL import ImagePIL_loaded = True
except:passtry:import ImagePIL_loaded = True
except:passif not PIL_loaded:raise AssertionError(" PIL should be installed")class BitmapGrating(i3.PCell):image = i3.DefinitionProperty()pixel = i3.ChildCellProperty()class Layout(i3.LayoutView):pixel_pitch = i3.Size2Property(default=(2.0, 2.0))def _generate_instances(self, insts):im = self.imagew = im.size[0]h = im.size[1]pixels = im.getdata()period_x = self.pixel_pitch[0]period_y = self.pixel_pitch[1]for y in range(h):pen_down = Falsefor x in range(w):p = pixels[x + y * w]if not pen_down:if p == 0:pen_down = Truestart_x = xelif not p == 0:pen_down = Falsen_x = x - start_xif n_x > 1:insts += i3.ARef(reference=self.pixel, origin=(start_x * period_x, -y * period_y),period=(period_x, period_y), n_o_periods=(n_x, 1))else:insts += i3.SRef(reference=self.pixel, position=(start_x * period_x, -y * period_y))if pen_down:n_x = x - start_x + 1if n_x > 1:insts += i3.ARef(reference=self.pixel, origin=(start_x * period_x, -y * period_y),period=(period_x, period_y), n_o_periods=(n_x, 1))else:insts += i3.SRef(reference=self.pixel, position=(start_x * period_x, -y * period_y))return instsclass BitmapGratingFromFile(BitmapGrating):image = i3.LockedProperty()filename = i3.StringProperty()def _default_image(self):return Image.open(self.filename).convert("1")class SquareBitmapGrating(BitmapGrating):pixel = i3.ChildCellProperty(locked=True)def _default_pixel(self):from picazzo3.phc.generic.holes import RectHolereturn RectHole(name="{}_pixel".format(self.name))# return i3.Rectangle(layer=self.layer,box_size=self.pixel_size)class Layout(BitmapGrating.Layout):# passpixel_size = i3.Size2Property(default=(1.0, 1.0))layer = i3.LayerProperty(default=i3.TECH.PPLAYER.WG.HOLE)def _default_pixel(self):lv = self.cell.pixel.get_default_view(i3.LayoutView)lv.set(radii=(0.5 * self.pixel_size[0], 0.5 * self.pixel_size[1]), process=self.layer.process,purpose=self.layer.purpose)return lvclass SquareBitmapGratingFromFile(BitmapGratingFromFile, SquareBitmapGrating):""" Load a bitmap from file and convert it to a grating:SquareBitmapGratingFromFile(filename = "xxx", pixel_size = (x,y), pixel_pitch = (x,y))"""passif __name__ == '__main__':logo = SquareBitmapGratingFromFile(name="fudan", filename="fudan.bmp")logo_layout = logo.Layout(pixel_size=(1.5, 1.5), pixel_pitch=(3., 3.))logo_layout.write_gdsii("fudan.gds")
