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proc randomenclosure {cx cy p1 p2 p3 p4} { |
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set r 0 |
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set pi 3.145926 |
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set pi2 [expr {$pi*2}] |
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set x0 [expr {$cx + rand()*$p3 + $p4}] |
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set ans "\[\[$x0,$cy\]" |
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while {1} { |
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set r [expr {$r+$p1+$p2*rand()}] |
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if {$r>=$pi2} break |
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set m [expr {rand()*$p3 + $p4}] |
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set x [expr {$cx+$m*cos($r)}] |
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set y [expr {$cy+$m*sin($r)}] |
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append ans ",\[$x,$y\]" |
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} |
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append ans ",\[$x0,$cy\]\]" |
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return $ans |
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} |
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proc randomshape1 {} { |
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set cx [expr {100+int(rand()*800)}] |
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set cy [expr {100+int(rand()*600)}] |
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set p1 [expr {rand()*0.1}] |
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set p2 [expr {rand()*0.5+0.5}] |
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set p3 [expr {rand()*100+25}] |
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set p4 [expr {rand()*25}] |
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return [randomenclosure $cx $cy $p1 $p2 $p3 $p4] |
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} |
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proc randomshape1_sm {} { |
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set cx [expr {100+int(rand()*800)}] |
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set cy [expr {100+int(rand()*600)}] |
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set p1 [expr {rand()*0.1}] |
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set p2 [expr {rand()*0.5+0.5}] |
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set p3 [expr {rand()*10+25}] |
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set p4 [expr {rand()*5}] |
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return [randomenclosure $cx $cy $p1 $p2 $p3 $p4] |
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} |
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proc randomshape2 {} { |
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set cx [expr {400+int(rand()*200)}] |
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set cy [expr {300+int(rand()*200)}] |
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set p1 [expr {rand()*0.05}] |
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set p2 [expr {rand()*0.5+0.5}] |
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set p3 [expr {rand()*50+200}] |
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set p4 [expr {rand()*50+100}] |
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return [randomenclosure $cx $cy $p1 $p2 $p3 $p4] |
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} |
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proc randomcolor {} { |
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set n [expr {int(rand()*5)}] |
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return [lindex {red orange green blue purple} $n] |
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} |
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puts {.print '<html>'} |
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puts {.print '<svg width="1000" height="800" style="border:1px solid black">'} |
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puts {CREATE TABLE t1(poly,clr);} |
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puts {CREATE TABLE t2(poly,clr);} |
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for {set i 0} {$i<30} {incr i} { |
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puts "INSERT INTO t1(rowid,poly,clr)" |
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puts " VALUES($i,'[randomshape1]','[randomcolor]');" |
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} |
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for {set i 30} {$i<80} {incr i} { |
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puts "INSERT INTO t1(rowid,poly,clr)" |
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puts " VALUES($i,'[randomshape1_sm]','[randomcolor]');" |
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} |
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for {set i 100} {$i<105} {incr i} { |
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puts "INSERT INTO t2(rowid,poly,clr)" |
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puts " VALUES($i,'[randomshape2]','[randomcolor]');" |
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} |
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puts {DELETE FROM t1 WHERE geopoly_json(poly) IS NULL;} |
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puts {SELECT geopoly_svg(poly, |
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printf('style="fill:none;stroke:%s;stroke-width:1;"',clr)) |
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FROM t1;} |
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puts {SELECT geopoly_svg(poly, |
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printf('style="fill:none;stroke:%s;stroke-width:2;"',clr)) |
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FROM t2;} |
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puts {.print '<svg>'} |
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