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checking exact enclosing

akita11akita11
in Verification

I'm trying to check "exact" enclosing of layer1 in layer2. This is often the case in PAD layout rule.
We can check minimum enclosing by "layer2.enclosing(layer1, value)".
Is there any way to check the exact enclosing values?

Comments

  • tomas2004tomas2004

    Hello,

    I tried to make one for rectilinear layers a while ago:

    report("DRC RULE ENCLOSURE_L1_L2_FIXED")

Layer01 = input(1,0)
Layer02 = input(2,0)

Enclosure_L1_L2_Fixed = 1.0.um

Layer01A = Layer01.enclosing(Layer02, Enclosure_L1_L2_Fixed,projection).polygons
Layer01B = Layer01.enclosing(Layer02, Enclosure_L1_L2_Fixed+1.dbu,projection).polygons

Layer01C = Layer01B - Layer01A
Layer01D = Layer01 - Layer02 - Layer01C

Layer01E = Layer01D.with_area(2.0*Enclosure_L1_L2_Fixed**2)
Layer01F = Layer01D.with_area(Enclosure_L1_L2_Fixed**2, 2.0*Enclosure_L1_L2_Fixed**2)
Layer01G =( Layer01D - Layer01E - Layer01F + Layer01A).merged

Layer01G.output("ENCLOSURE L1 L2 FIXED", "Fixed Enclosure L1 L2 = #{Enclosure_L1_L2_Fixed}um")

    Cheers,

    Tomas

  • akita11akita11

    @tomas2004 Hi, thanks for your advise!

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