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https://git.dev.opencascade.org/repos/occt.git
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06d40093b7
vlight command has been revised to provide more friendly syntax. Command now accepts light index or name as first argument. Added arguments -enable/-disable for managing enabled state. Added argument -reset to reset light parameters to default values. V3d_Viewer::SetDefaultLights() now sets names "headlight" and "ambient" to created lights. Graphic3d_TypeOfLightSource enumeration values have been renamed to avoid shortcuts. Draw::Atof(), applied corrections to avoid explicit new/delete calls.
88 lines
2.4 KiB
Tcl
88 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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# Ray-Tracing doesn't work with Compatible Profile on macOS
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if { $::tcl_platform(os) == "Darwin" } { vcaps -core }
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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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vbackground -color WHITE
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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 -defaults
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vlight dirlight1 -type DIRECTIONAL -direction 1 -2 -10 -head 1 -color WHITE
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vlight dirlight2 -type 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 DD0029
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vsetcolor b2 F6DD00
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vsetcolor b3 98F918
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vsetcolor b4 E9007A
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vsetcolor b5 007ABC
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vsetcolor b6 93007A
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vsetcolor b7 EE9800
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vsetcolor b8 00B489
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vsetcolor b9 00A47A
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vsetcolor b10 007ABC
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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 BLACK -halign left -valign bottom -angle 0 -zoom 0 -height 40
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