mirror of
https://git.dev.opencascade.org/repos/occt.git
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1f26f80bb7
Bnd_OBB constructor from Bnd_Box is fixed for VOID input. DRAW command bounding command is adjusted: - Support of old syntax 'bounding shape'is restored. - Exception on VOID bounding box is avoided. - Arguments are handled in case-insensitive way. - Options -s, -perfmeter, and ability to set result as first argument are removed as redundant. - Help is moved to command definition. Separate command OCC29311 is added (in QADraw) to do the same as option -perfmeter did; tests are updated.
86 lines
2.4 KiB
Tcl
86 lines
2.4 KiB
Tcl
# Generate set of boxes resembling OCC logo and arranged in the shape of
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# Penrose triangle on perspective view.
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# The sample shows how the viewer can be manipulated to produce required
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# visual effect
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#Category: Visualization
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#Title: Penrose triangle on perspective view
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pload MODELING VISUALIZATION
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# procedure to define box dimensions
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set scale 1.
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set ratio 0.94
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proc defbox {} {
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global scale ratio
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set scale [expr $scale * $ratio]
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return [list 1.8*$scale 1.8*$scale 1.3*$scale]
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}
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# make set of boxes
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eval box b1 0 0 0 [defbox]
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eval box b2 2 0 0 [defbox]
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eval box b3 4 0 0 [defbox]
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eval box b4 6 0 0 [defbox]
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eval box b5 6 -1.5 0 [defbox]
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eval box b6 6 -3 0 [defbox]
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eval box b7 6 -4.5 0 [defbox]
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eval box b8 6 -6 0 [defbox]
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eval box b9 6 -6 1 [defbox]
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eval box b10 6 -6 2 [defbox]
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# cut last box by prisms created from the first two to make impression
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# that it is overlapped by these on selected view (see vviewparams below)
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explode b1 f
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explode b2 f
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prism p0 b1_5 12.3 -14 6.8
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bcut bx b10 p0
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prism p1 b2_3 12 -14 6.8
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bcut bxx bx p1
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tcopy bxx b10
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# make some boxes hollow
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for {set i 1} {$i <= 1} {incr i} {
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set dim [bounding b$i -save xmin ymin zmin xmax ymax zmax]
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set dx [dval xmax-xmin]
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set x1 [dval xmin+0.1*$dx]
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set x2 [dval ymin+0.1*$dx]
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set x3 [dval zmin+0.1*$dx]
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box bc $x1 $x2 $x3 0.8*$dx 0.8*$dx $dx
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bcut bb b$i bc
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tcopy bb b$i
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}
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# prepare a view
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vinit Penrose w=1024 h=512
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vsetcolorbg 255 255 255
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vrenderparams -rayTrace -fsaa on -reflections off -shadows off
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# set camera position and adjust lights
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vcamera -persp -fovy 25
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vviewparams -eye 14 -14 6.8 -up 0 0 1 -at 4 -4 0 -scale 70
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vsetdispmode 1
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vlight def
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vlight add directional direction 1 -2 -10 head 1 color white
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vlight add directional direction 0 -10 0 head 1 color white
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# display boxes
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vdisplay b1 b2 b3 b4 b5 b6 b7 b8 b9 b10
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# set colors like in boxes of on OCC logo
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vsetcolor b1 0.8671875 0 0.16015625
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vsetcolor b2 0.96484375 0.8671875 0
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vsetcolor b3 0.609375 0.97734375 0.09375
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vsetcolor b4 0.90234375 0 0.48046875
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vsetcolor b5 0 0.48046875 0.73828125
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vsetcolor b6 0.578125 0 0.48046875
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vsetcolor b7 0.93359375 0.609375 0
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vsetcolor b8 0 0.70703125 0.9296875
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vsetcolor b9 0 0.64453125 0.48046875
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vsetcolor b10 0 0.48046875 0.73828125
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# set material to plastic for better look
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for {set i 1} {$i <= 10} {incr i} {vsetmaterial b$i plastic}
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vdrawtext label "Which\nbox\nis\ncloser\nto\nyou?" -pos 0 -6 -2 -color 0 0 0 -halign left -valign bottom -angle 0 -zoom 0 -height 40
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