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In order to solve the problem, triangle vertices order is inverted in mirrored mesh (triangulation). Mesh considered to be mirrored if its transformation matrix determinant is less than 0. To handle AIS object mirror transformations "Mirrored" flag stored in OpenGl_Structure. If this flag is enabled, glFrontFace (GL_CW) applied before the draw call. New DRAW commands for visualization level transformations added.
41 lines
749 B
Plaintext
41 lines
749 B
Plaintext
puts "============"
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puts "OCC25276"
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puts "============"
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puts ""
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#######################################################################
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# Visualization - Lighting is broken if some kinds of transformation applied to a shape
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#######################################################################
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pload ALL
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vinit
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box b1 1 6 1
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vsetdispmode 1
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vdisplay b1
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vconnectto b2 6 0 0 b1
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box b3 7 1 1
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vdisplay b3
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vloctranslate b3 0 4 0
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vconnect z 0 0 0 b1 b2 b3
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vconnect z1 0 0 0 z
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vloctranslate z1 10 0 0
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vconnect z2 0 10 0 z
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vlocrotate z2 0 0 0 1 0 0 90
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vconnect z3 -10 0 0 z
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vlocscale z3 0 0 0 0.5
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vconnect z4 0 0 0 z
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vlocmove z4 z3
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psphere sp 3
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vdisplay sp
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vlocmove sp z3
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vlocreset sp
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vlocmirror z 0 -0.5 0 0 1 0
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vfit
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vdump $imagedir/${casename}.png
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