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Diffstat (limited to 'demos/curveBezier.tcl')
| -rw-r--r-- | demos/curveBezier.tcl | 265 |
1 files changed, 0 insertions, 265 deletions
diff --git a/demos/curveBezier.tcl b/demos/curveBezier.tcl deleted file mode 100644 index ed1622e..0000000 --- a/demos/curveBezier.tcl +++ /dev/null @@ -1,265 +0,0 @@ -# these simple samples have been developped by C. Mertz mertz@cena.fr in perl -# tcl version by Jean-Paul Imbert imbert@cena.fr - -if {![info exists zincDemo]} { - error "This script should be run from the zinc-widget demo." -} - - -namespace eval curveBezier { - variable w .curveBezier - catch {destroy $w} - toplevel $w - wm title $w "Zinc Curve Bezier Demonstration" - wm iconname $w Curve - - variable defaultfont [font create -family Helvetica -size 14 -weight normal] - #variable imagePath [file join $zinc_library demos images] - #variable texture [image create photo -file [file join $imagePath paper-grey1.gif]] - variable splineColor \#AA0000 - variable handleColor grey70 - variable barColor grey30 - variable textColor grey20 - - grid [button $w.dismiss -text Dismiss -command "destroy $w"] -row 2 -column 0 -pady 10 - grid [button $w.code -text "See Code" -command "showCode $w"] -row 2 -column 1 -pady 10 - - - grid [text $w.text -relief sunken -borderwidth 2 -setgrid true -height 3] \ - -row 0 -column 0 -columnspan 2 -sticky ew - - $w.text insert 0.0 { - 6 examples of curves containing control points are displayed - with the list of control points written just below. - You can move the handles to modify the bezier curves - } - - grid [zinc $w.zinc -width 700 -height 650 -font $defaultfont -borderwidth 0 \ - -backcolor \#898A8F] -row 1 -column 0 -columnspan 2 -sticky news - grid columnconfigure $w 0 -weight 1 - grid columnconfigure $w 1 -weight 1 - grid rowconfigure $w 1 -weight 2 - - variable group [$w.zinc add group 1] - - $w.zinc add text $group -position {50 20} -anchor w -color $textColor \ - -text {Examples of curve items using cubic bezier control points} - - ## Please note: much of the items below could be computed - $w.zinc add text $group -anchor w -position {25 270} -tags bezier1 -color $textColor -width 270 - $w.zinc add curve $group {100 200 100 100} -tags {line1 l1-2} \ - -linecolor $barColor -filled 0 -linewidth 2 - $w.zinc add curve $group {400 100 400 200} -tags {line1 l3-4} \ - -linecolor $barColor -filled 0 -linewidth 2 - $w.zinc add curve $group {{100 200} {100 100 c} {400 100 c} {400 200}} \ - -tags bezier1 -closed 0 -linecolor $splineColor -linewidth 5 - $w.zinc add arc $group {90 190 110 210} -tags {handle1 p1} -filled 1 \ - -fillcolor \#BBBBBB - $w.zinc add arc $group {90 90 110 110} -tags {handle1 p2} -filled 1 \ - -linewidth 0 -fillcolor $handleColor -filled 1 - $w.zinc add arc $group {390 90 410 110} -tags {handle1 p3} -filled 1 \ - -linewidth 0 -fillcolor $handleColor -filled 1 - $w.zinc add arc $group {390 190 410 210} -tags {handle1 p4} -filled 1 \ - -fillcolor \#BBBBBB - - $w.zinc add text $group -anchor w -position {570 270} -tags bezier2 -color $textColor -width 270 - $w.zinc add curve $group {600 200 675 100} -tags {line2 l1-2} \ - -linecolor $barColor -linewidth 2 - $w.zinc add curve $group {975 100 900 200} -tags {line2 l3-4} \ - -linecolor $barColor -linewidth 2 - $w.zinc add curve $group {{600 200} {675 100 c} {975 100 c} {900 200}} \ - -tags bezier2 -closed 0 -linecolor $splineColor -linewidth 5 - $w.zinc add arc $group {590 190 610 210} -tags {handle2 p1} -filled 1 \ - -fillcolor $handleColor - $w.zinc add arc $group {665 90 685 110} -tags {handle2 p2} -filled 1 \ - -linewidth 0 -fillcolor $handleColor - $w.zinc add arc $group {965 90 985 110} -tags {handle2 p3} -filled 1 \ - -linewidth 0 -fillcolor $handleColor - $w.zinc add arc $group {890 190 910 210} -tags {handle2 p4} -filled 1 \ - -fillcolor $handleColor - - $w.zinc add text $group -anchor w -position {25 570} -tags bezier3 -color $textColor -width 270 - $w.zinc add curve $group {100 500 25 400} -tags {line3 l1-2} \ - -linecolor $barColor -linewidth 2 - $w.zinc add curve $group {475 400 400 500} -tags {line3 l3-4} \ - -linecolor $barColor -linewidth 2 - $w.zinc add curve $group {{100 500} {25 400 c} {475 400 c} {400 500}} \ - -tags {bezier3} -closed 0 -linecolor $splineColor -linewidth 5 - $w.zinc add arc $group {90 490 110 510} -tags {handle3 p1} -filled 1 \ - -fillcolor $handleColor - $w.zinc add arc $group {15 390 35 410} -tags {handle3 p2} -filled 1 \ - -linewidth 0 -fillcolor $handleColor - $w.zinc add arc $group {465 390 485 410} -tags {handle3 p3} -filled 1 \ - -linewidth 0 -fillcolor $handleColor - $w.zinc add arc $group {390 490 410 510} -tags {handle3 p4} -filled 1 \ - -fillcolor $handleColor - - $w.zinc add text $group -anchor w -position {570 570} -tags bezier4 -color $textColor -width 270 - $w.zinc add curve $group {600 500 600 350} -tags {line4 l1-2} \ - -linecolor $barColor -linewidth 2 - $w.zinc add curve $group {900 650 900 500} -tags {line4 l3-4} \ - -linecolor $barColor -linewidth 2 - $w.zinc add curve $group {{600 500} {600 350 c} {900 650 c} {900 500}} \ - -tags {bezier4} -closed 0 -linecolor $splineColor -linewidth 5 - $w.zinc add arc $group {590 490 610 510} -tags {handle4 p1} -filled 1 \ - -fillcolor $handleColor - $w.zinc add arc $group {590 340 610 360} -tags {handle4 p2} -filled 1 \ - -linewidth 0 -fillcolor $handleColor - $w.zinc add arc $group {890 640 910 660} -tags {handle4 p3} -filled 1 \ - -linewidth 0 -fillcolor $handleColor - $w.zinc add arc $group {890 490 910 510} -tags {handle4 p4} -filled 1 \ - -fillcolor $handleColor - - $w.zinc add text $group -anchor w -position {25 870} -tags bezier5 -color $textColor -width 270 - $w.zinc add curve $group {100 800 175 700} -tags {line5 l1-2} \ - -linecolor $barColor -filled 0 -linewidth 2 - $w.zinc add curve $group {325 700 400 800} -tags {line5 l3-4} \ - -linecolor $barColor -filled 0 -linewidth 2 - $w.zinc add curve $group {{100 800} {175 700 c} {325 700 c} {400 800}} \ - -tags {bezier5} -closed 0 -linecolor $splineColor -linewidth 5 - $w.zinc add arc $group {90 790 110 810} -tags {handle5 p1} -filled 1 \ - -fillcolor $handleColor - $w.zinc add arc $group {165 690 185 710} -tags {handle5 p2} -filled 1 \ - -linewidth 0 -fillcolor $handleColor -filled 1 - $w.zinc add arc $group {315 690 335 710} -tags {handle5 p3} -filled 1 \ - -linewidth 0 -fillcolor $handleColor -filled 1 - $w.zinc add arc $group {390 790 410 810} -tags {handle5 p4} -filled 1 \ - -fillcolor $handleColor - - $w.zinc add text $group -anchor w -position {570 970} -tags bezier6 -color $textColor -width 280 - $w.zinc add curve $group {600 800 625 700} -tags {line6 l1-2} \ - -linecolor $barColor -linewidth 2 - $w.zinc add curve $group {725 700 750 800} -tags {line6 l3-4} \ - -linecolor $barColor -linewidth 2 - $w.zinc add curve $group {750 800 775 900} -tags {line6 l4-5} \ - -linecolor $barColor -linewidth 2 - $w.zinc add curve $group {875 900 900 800} -tags {line6 l6-7} \ - -linecolor $barColor -linewidth 2 - $w.zinc add curve $group { - {600 800} {625 700 c} {725 700 c} {750 800} - {775 900 c} {875 900 c} {900 800} - } -tags {bezier6} -filled 0 -closed 0 -linecolor $splineColor -linewidth 5 - $w.zinc add arc $group {590 790 610 810} -tags {handle6 p1} -filled 1 \ - -fillcolor $handleColor - $w.zinc add arc $group {615 690 635 710} -tags {handle6 p2} -filled 1 \ - -linewidth 0 -fillcolor $handleColor - $w.zinc add arc $group {715 690 735 710} -tags {handle6 p3} -filled 1 \ - -linewidth 0 -fillcolor $handleColor - $w.zinc add arc $group {740 790 760 810} -tags {handle6 p4} -filled 1 \ - -linecolor blue -fillcolor blue -linewidth 2 - $w.zinc add arc $group {766 891 784 909} -tags {handle6 p5} -filled 1 \ - -fillcolor $handleColor - $w.zinc add arc $group {865 890 885 910} -tags {handle6 p6} -filled 1 \ - -linewidth 0 -fillcolor $handleColor - $w.zinc add arc $group {890 790 910 810} -tags {handle6 p7} -filled 1 \ - -fillcolor $handleColor - - - $w.zinc scale $group 0.6 0.6 - - ## Set the text of the text item with a tag "tag" - ## to a human-readable form of the coords of the - ## corresponding curve with the same tag "tag" - proc setText {tag} { - variable w - set textItem [$w.zinc find withtype text $tag] - set curveItem [$w.zinc find withtype curve $tag] - set coords [$w.zinc coords $curveItem] - set count 0 - $w.zinc itemconfigure $textItem -text $coords - } - - foreach bezierCount {1 2 3 4 5 6} { - setText "bezier$bezierCount" - set curveItem [$w.zinc find withtype curve "bezier$bezierCount"] - set coords [$w.zinc coords $curveItem] - #puts "$bezierCount : $curveItem : $coords" - $w.zinc bind "handle$bezierCount" <1> {::curveBezier::itemStartDrag %x %y} - $w.zinc bind "handle$bezierCount" <B1-Motion> {::curveBezier::itemDrag %x %y} - #$w.zinc bind "handle$bezierCount" "<ButtonPress-1>" {\&press \&motion} - #$w.zinc bind "handle$bezierCount" "<ButtonRelease-1>" {\&release} - } - - - - - ##### bindings for moving the handles - variable item "" - variable bezierNum "" - variable ptNum "" - - variable xOrig 0 - variable yOrig 0 - - proc itemStartDrag {x y} { - variable w - variable xOrig - variable yOrig - variable bezierNum - variable ptNum - variable item - - set xOrig $x - set yOrig $y - set item [$w.zinc find withtag current] - - foreach val [$w.zinc gettags $item] { - regexp {([a-z]+)(\d)} $val "" name num - if {$name=="handle"} {set bezierNum $num} - if {$name=="p"} {set ptNum $num} - } - #puts "bezierNum=$bezierNum ptNum=$ptNum" - } - - # Callback for moving an item - proc itemDrag {x y} { - variable xOrig - variable yOrig - variable w - variable item - - $w.zinc transform $item "[expr $x - $xOrig] [expr $y - $yOrig]" - moveHandle [expr $x - $xOrig] [expr $y - $yOrig] - set xOrig $x - set yOrig $y - } - - - proc moveHandle {dx dy} { - variable w - variable bezierNum - variable ptNum - variable item - - set pt1 [lindex [$w.zinc coords $item] 0] - set pt2 [lindex [$w.zinc coords $item] 1] - - ## modifying the handle coords - $w.zinc coords $item "[expr [lindex $pt1 0]+$dx] [expr [lindex $pt1 1]+$dy] [expr [lindex $pt2 0]+$dx] [expr [lindex $pt2 1]+$dy]" - set prevPtNum [expr $ptNum-1] - - # there should only be one such item! - set lineA [$w.zinc find withtag "line$bezierNum && l$prevPtNum-$ptNum"] - if {$lineA!=""} { - set x [lindex [$w.zinc coords $lineA 0 1] 0] - set y [lindex [$w.zinc coords $lineA 0 1] 1] - $w.zinc coords $lineA 0 1 "[expr $x+$dx] [expr $y+$dy]" - } - - set nextPtNum [expr $ptNum+1] - # there should only be one such item: - set lineB [$w.zinc find withtag "line$bezierNum && l$ptNum-$nextPtNum"] - if {$lineB!=""} { - set x [lindex [$w.zinc coords $lineB 0 0] 0] - set y [lindex [$w.zinc coords $lineB 0 0] 1] - $w.zinc coords $lineB 0 0 "[expr $x+$dx] [expr $y+$dy]" - } - set tab [$w.zinc coords "bezier$bezierNum" 0 [expr $ptNum-1]] - set x [lindex $tab 0] - set y [lindex $tab 1] - set control [lindex $tab 2] - $w.zinc coords "bezier$bezierNum" 0 [expr $ptNum-1] "[expr $x+$dx] [expr $y+$dy] $control" - setText "bezier$bezierNum" - } -} - |