DRC Class Reference

A module with many design rule checks. More...

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Detailed Description

This class allows the access to the design rule checker. For each rule available in the graphical user interface, there is a corresponding method in this class. Please see Design Rule Checker documentation for a more detailed description of the checks. Also the reporting of violations and the drc region can be setup by using this class.

For a complete DRC a plenty of rules are required. For a complete DRC in one step please create a macro with all your rules. There you can also give each rule an individual name. This macro gives an example. It is also included in the example macros.

   1 #!/usr/bin/layout
   2 #name=Macro: drc example.layout
   3 #help=example for a drc macro
   4 
   5 
   6 int main(){
   7 
   8 layout->drcTool->result="DRC (LayoutEditor example) \r\n";
   9 
  10 // setup error layer
  11 layout->drawing->activeLayer=0;
  12 layout->drcTool->setErrorLayerToActiveLayer();
  13 
  14 // check for layer metal 1
  15 layout->drcTool->ruleName= "Minimum Size Metal1";
  16 layout->drcTool->minimumSize(800,6,true);
  17 layout->drcTool->ruleName= "Minimum Distance Metal1";
  18 layout->drcTool->minimumElementDistance(800,6,true);
  19 
  20 // check for layer metal 2
  21 layout->drcTool->ruleName= "Minimum Size Metal2";
  22 layout->drcTool->minimumSize(900,8,true);
  23 layout->drcTool->ruleName= "Minimum Distance Metal2";
  24 layout->drcTool->minimumElementDistance(900,8,true);
  25 
  26 // check for via1 (metal1 to metal2)
  27 layout->drcTool->ruleName= "Via in metal1";
  28 layout->drcTool->inside(50,7,6);
  29 layout->drcTool->ruleName= "Via in metal2";
  30 layout->drcTool->inside(60,7,8);
  31 
  32 
  33 layout->drcTool->showReport();
  34 
  35 }

Member Function Documentation

void drc::addViolation(string name,double value, point p1, point p2, int type=0,int status=0)

Add a drc violation to the list of detected violations. This feature can be used to create own drc checks or importing result of external drc checks.Please see getViolationType for a list of supported types.

void drc::angle45OnLayer(int layer,bool mergeBefore=false)

Tests for elements with non 45°angle to the axis.

void drc::angle90OnLayer(int layer,bool mergeBefore=false)

Tests for elements with non 90°angle to the axis.

void drc::circleRadiusOnLayer(int min, int max, int layer)

checkes all circles on the given layer on its radius. If min or max is zero, the minimum or maximum radius is not checked. (introduced with version 20150128)

void drc::clearDRC()

all graphical DRC results in the current cell will be removed from the current design. (introduced with version 20120824)

void drc::clearViolationView()

Clears the list of detected violations.

void drc::densityOnLayer(int layer,int box, double min, double max)

Check the densitiy of a single layer. min and max is the required density in procent. box is the rectangle size in which the density muss fit.

void drc::dimensionOnLayer(int lengthMin,int lengthMax,int widthMin,int widthMax, int layer, bool mergeBefore=false)

Tests, for element with axis dimension outside the specified range.

int drc::error

Number of errors on last check.

int drc::errorCount

Sum of detected errors.

int drc::errorLayer

On this layer all errors are marked.

void drc::exactDimensionOnLayer(int length,int width, int layer, bool mergeBefore=false)

Tests, for element with a different size than a specified value. (introduced with version 20130201)

void drc::exactInside(int distance,int insideLayer, int layer1, int layer2=-1, int layer3=-1)

Tests, if all elements on insidelayer are inside in one of layer1 to layer3 and have a exact distance. (introduced with version 20130101)

See also: Inside, DesignRuleChecker

string drc::getReport()

Returns: result, it is crop of all no errors if it is longer than 40 lines.