如何用EDB函式庫輸出path跟polygon的座標點

在3D Layout當中的電路板設計。

(圖一) HFSS 3D Layout

以下程式碼讀取.aedb並輸出trace, polygon的座標訊息，並輸出到json檔案當中

import clr, os, sys, System, json
AnsysEM_Path = 'C:/Program Files/AnsysEM/AnsysEM20.2/Win64/'
sys.path.append(AnsysEM_Path)
os.environ['PATH'] += ';' + AnsysEM_Path

clr.AddReference('Ansys.Ansoft.Edb')
clr.AddReference('Ansys.Ansoft.SimSetupData')
import Ansys.Ansoft.Edb as edb

edb.Database.SetRunAsStandAlone(True)

DB = edb.Database.Open('D:/demo/test.aedb', False)

cell = list(DB.TopCircuitCells)
layout = cell[0].GetLayout()
data = {}
type_group = set()
for i in layout.Primitives:
    name = i.GetId()
    net = i.GetNet().GetName()
    layer = i.GetLayer().GetName()
    ptype = i.GetPrimitiveType()
    key = ','.join([str(net), str(name), str(layer), str(ptype)])
    type_group.add(str(ptype))

    data[key]=[]
    for p in i.GetPolygonData().Points:
        _x = p.X.ToDouble()
        _y = p.Y.ToDouble()
        if _x == sys.float_info.max or _y == sys.float_info.max:
            continue
        data[key].append((_x, _y))
    sk = sorted(data.keys())
    newdata = {str(i):data[i] for i in sk}

print(type_group)
with open('d:/demo/pcb.log', 'w') as f:
    json.dump(newdata, f, indent=4)
為了要確保抓到的資料是否完整，我們接著到Anaconda Spyder環境當中讀取.json檔的內容並根據座標輸出圖片。注意輸出結果並不包含pads及via的相關結構。

import json
import matplotlib.pyplot as plt
plt.figure(figsize=(30, 20))
with open('d:/demo/pcb.log', 'r') as f:
    data = json.load(f)

for i in data:
    net, gid, layer, ptype = i.split(',')
    if layer == 'PWR':
        x, y = zip(*data[i])
        plt.fill(list(x)+[x[0]], list(y)+[y[0]], color='r')

plt.savefig('d:/demo/top.png')
plt.show()

(圖二)用Matplotlib繪圖