Updated gear module to correctly display error message when neither circular_pitch or diametral_pitch parameters are
specified. Previous method of testing for false value did not work because circular_pitch is reassigned and becomes undef when diametral_pitch is false.
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@ -310,7 +310,8 @@ module gear (
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involute_facets=0,
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flat=false)
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{
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if (circular_pitch==false && diametral_pitch==false)
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// Check for undefined circular pitch (happens when neither circular_pitch or diametral_pitch are specified)
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if (circular_pitch==undef)
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echo("MCAD ERROR: gear module needs either a diametral_pitch or circular_pitch");
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//Convert diametrial pitch to our native circular pitch
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