diff options
Diffstat (limited to 'extensions/gui/ix/toxy/filter.wid')
| -rwxr-xr-x | extensions/gui/ix/toxy/filter.wid | 286 |
1 files changed, 286 insertions, 0 deletions
diff --git a/extensions/gui/ix/toxy/filter.wid b/extensions/gui/ix/toxy/filter.wid new file mode 100755 index 00000000..b05c938a --- /dev/null +++ b/extensions/gui/ix/toxy/filter.wid @@ -0,0 +1,286 @@ +namespace eval ::ix {
+ proc random_int {} {
+ return [expr "int(floor(rand()*16))"]
+ }
+ proc random_clr {} {
+ return [format "\#%1X%1X%1X%1X%1X%1X" [random_int] [random_int] [random_int] [random_int] [random_int] [random_int]]
+ }
+ variable _
+ proc filter_update {path target n} {
+ set type [$path.filter itemcget type_$n -text]
+ set q [$path.filter itemcget q_$n -text]
+ set loc [$path.filter coords sqr_$n]
+ set x [expr 5 + [lindex $loc 0]]
+ set y [expr 5 + [lindex $loc 1]]
+ set inv [filter_invtr $path $target $x $y]
+ set freq [lindex $inv 0]
+ set mag [lindex $inv 1]
+ filter_bqp $path $target $n $type $freq $mag $q
+ }
+ proc filter_bqp {path target n type f0 dBgain Q} {
+ variable _
+ set A [expr pow(10,($dBgain/40.0))]
+ set Fs $_($target:rate)
+ set pi [expr {atan(1) * 4}]
+ set w0 [expr 2 * $pi * $f0 / $Fs]
+ set alpha [expr sin($w0) / (2 * $Q)]
+ switch $type {
+ notch {
+ set b0 1
+ set b1 [expr -2 * cos($w0)]
+ set b2 1
+ set a0 [expr 1 + $alpha]
+ set a1 $b1
+ set a2 [expr 1 - $alpha]
+ }
+ lowpass {
+ set b0 [expr (1 - cos($w0))/2]
+ set b1 [expr 1 - cos($w0)]
+ set b2 $b0
+ set a0 [expr 1 + $alpha]
+ set a1 [expr -2 * cos($w0)]
+ set a2 [expr 1 - $alpha]
+ }
+ highpass {
+ set b0 [expr (1 + cos($w0))/2]
+ set b1 [expr -(1 + cos($w0))]
+ set b2 $b0
+ set a0 [expr 1 + $alpha]
+ set a1 [expr -2 * cos($w0)]
+ set a2 [expr 1 - $alpha]
+ }
+ qbandpass {
+ set b0 [expr sin($w0)/2]
+ set b1 0
+ set b2 [expr -$b0]
+ set a0 [expr 1 + $alpha]
+ set a1 [expr -2 * cos($w0)]
+ set a2 [expr 1 - $alpha]
+ }
+ bandpass {
+ set b0 $alpha
+ set b1 0
+ set b2 [expr -$alpha]
+ set a0 [expr 1 + $alpha]
+ set a1 [expr -2 * cos($w0)]
+ set a2 [expr 1 - $alpha]
+ }
+ allpass {
+ set b0 [expr 1 - $alpha]
+ set b1 [expr -2 * cos($w0)]
+ set b2 [expr 1 + $alpha]
+ set a0 $b2
+ set a1 $b1
+ set a2 $b0
+ }
+ peakingEQ {
+ set b0 [expr 1 + $alpha * $A]
+ set b1 [expr -2 * cos($w0)]
+ set b2 [expr 1 - $alpha * $A]
+ set a0 [expr 1 + $alpha / $A]
+ set a1 $b1
+ set a2 [expr 1 - $alpha / $A]
+ }
+ lowShelf {
+ set b0 [expr $A*(($A+1)-($A-1)*cos($w0)+2*sqrt($A)*$alpha)]
+ set b1 [expr 2*$A*(($A-1)-($A+1)*cos($w0))]
+ set b2 [expr $A*(($A+1)-($A-1)*cos($w0)-2*sqrt($A)*$alpha)]
+ set a0 [expr ($A+1)+($A-1)*cos($w0)+2*sqrt($A)*$alpha]
+ set a1 [expr -2*(($A-1)+($A+1)*cos($w0))]
+ set a2 [expr ($A+1)+($A-1)*cos($w0) - 2*sqrt($A)*$alpha ]
+ }
+ highShelf {
+ set b0 [expr $A*(($A+1)+($A-1)*cos($w0)+2*sqrt($A)*$alpha)]
+ set b1 [expr -2*$A*(($A-1)+($A+1)*cos($w0))]
+ set b2 [expr $A*(($A+1)+($A-1)*cos($w0)-2*sqrt($A)*$alpha)]
+ set a0 [expr ($A+1)-($A-1)*cos($w0)+2*sqrt($A)*$alpha]
+ set a1 [expr 2*(($A-1)-($A+1)*cos($w0))]
+ set a2 [expr ($A+1)-($A-1)*cos($w0) - 2*sqrt($A)*$alpha ]
+ }
+ }
+ set f 0
+ set fr {}
+ set _($target:fmag_$n) {1}
+ set h [winfo height $path.filter]
+ set h2 [expr $h / 2]
+ while {$f < [winfo width $path.filter]} {
+ incr f
+ set w [expr $pi * [filter_invtr_x $path $target $f] / $_($target:nyquist)]
+ set mag [expr sqrt(pow(($b0+$b1*cos($w)+$b2*cos(2*$w)),2)+pow(($b1*sin($w)+$b2*sin(2*$w)),2))/sqrt(pow(($a0+$a1*cos($w)+$a2*cos(2*$w)),2)+pow(($a1*sin($w)+$a2*sin(2*$w)),2))]
+ lappend fr $f [expr $h - $h2 * $mag]
+ lappend _($target:fmag_$n) $mag
+ }
+ $path.filter coords resp_$n $fr
+ pd [concat $target.rp _cb params $n [expr -1 * $a1 / $a0] [expr -1 * $a2 / $a0] [expr $b0 / $a0] [expr $b1 / $a0] [expr $b2 / $a0] \;]
+ filter_resp $path $target
+ }
+ proc filter_resp {path target} {
+ variable _
+ if {$_($target:init) == 1} {
+ set f 0
+ set fr {}
+ set h [winfo height $path.filter]
+ set h2 [expr $h / 2]
+ while {$f < [winfo width $path.filter]} {
+ incr f
+ set cx 0
+ set ci 1
+ while {$cx < $_($target:n)} {
+ incr cx
+ set ci [expr $ci * [lindex $_($target:fmag_$cx) $f]]
+ }
+ lappend fr $f [expr $h - $h2 * $ci]
+ }
+ $path.filter coords resp $fr
+ }
+ }
+ proc filter_motion {path target x y} {
+ set v [filter_invtr $path $target $x $y]
+ $path itemconfigure freq -text "[expr int([lindex $v 0])] hz"
+# $path itemconfigure dB -text "[expr int([lindex $v 1])] dB"
+ }
+ proc filter_invtr {path target x y} {
+ return [list [filter_invtr_x $path $target $x] [filter_invtr_y $path $target $y]]
+ }
+ proc filter_invtr_x {path target x} {
+ variable _
+ set gw [winfo width $path]
+ if {$_($target:log) > 0} {
+ return [expr $_($target:scale) * exp($_($target:log) * $x / $gw.0)]
+ } else {
+ return freq [expr $_($target:nyquist) * $x / $gw.0]
+ }
+ }
+ proc filter_invtr_y {path target y} {
+ set gh [winfo height $path]
+ return [expr (12 * ($y / $gh.0 - 0.5) * - 1.0)]
+ }
+ proc filter_new {path target w h bg div log rate n} {
+ variable _
+ set _($target:init) 0
+ set _($target:n) $n
+ set _($target:log) $log
+ set _($target:rate) $rate
+ set _($target:nyquist) [expr $rate / 2]
+ set _($target:scale) [expr $_($target:nyquist) / exp($_($target:log))]
+ if {[winfo exists $path.filter] != 1} {
+ canvas $path.filter -bg $bg -width $w -height $h
+ pack $path.filter -side left
+ bind $path.filter <Motion> "::ix::filter_motion %W $target %x %y"
+# bind $path.filter <ButtonRelease> "::ix::filter_resp $path $target"
+ bind $path.filter <Leave> {
+ %W itemconfigure freq -text ""
+ %W itemconfigure dB -text ""
+ }
+ bind $path.filter <1> "::ix::filter_click $path $target %x %y"
+ bind $path.filter <B1-Motion> [bind $path.filter <1>]
+ filter_gridlines $path $target $div
+ filter_filters $path $target $n
+ $path.filter create text 2 1 -tags freq -text "" -anchor nw -justify left -font {{Bitstream Vera Sans} 9}
+# $path.filter create text 96 1 -tags dB -text "" -anchor ne -justify right -font {{Bitstream Vera Sans} 9}
+ $path.filter create line 0 0 0 0 -tags resp -fill grey44 -width 1.6
+ set fn 0
+ while {$fn < $n} {
+ incr fn
+ foreach a [list sqr_$fn type_$fn q_$fn] {$path.filter raise $a}
+ }
+ set bd [expr {[$path cget -bd] * 2}]
+ $path configure -bg $bg -width [expr [winfo width $path.filter] + $bd] -height [expr [winfo height $path.filter] + $bd]
+ }
+ pd "$target.rp _cb n $n;"
+ set _($target:init) 1
+ }
+ proc filter_filters {path target n} {
+ set gh [winfo height $path.filter]
+ set gw [winfo width $path.filter]
+ set fn 0
+ while {$fn < $n} {
+ incr fn
+ set px [expr $gw.0 * $fn.0 / $n.0]
+ set py [expr $gh.0 / 2.0]
+ set fill [random_clr]
+ $path.filter create rectangle 0 0 0 0 -tags sqr_$fn -fill $fill
+ $path.filter create line 0 0 0 0 -tags resp_$fn -fill $fill
+ $path.filter create text 0 0 -tags type_$fn -fill grey33 -font {{Bitstream Vera Sans} 8} -text "peakingEQ" -anchor e -justify right
+ $path.filter create text 0 0 -tags q_$fn -fill white -font {{Bitstream Vera Sans} 8} -text "1.0" -anchor w -justify left
+ set b1 "::ix::filter_move $path $target $fn %x %y"
+ set b2 "::ix::filter_menu $path $target $fn %X %Y"
+ set b3 "::ix::filter_move_q $path $target $fn %x %y"
+ set b4 "::ix::filter_locus $path $target $fn %x %y"
+ foreach a [list sqr_$fn type_$fn q_$fn] {
+ $path.filter bind $a <1> $b1
+ $path.filter bind $a <2> $b2
+ $path.filter bind $a <3> $b4
+ $path.filter bind $a <B3-Motion> $b3
+ $path.filter bind $a <B1-Motion> $b1
+ }
+ filter_move $path $target $fn $px $py
+ }
+ }
+ proc filter_menu {path target n x y} {
+ if {[winfo exists $path.ft] == 1} { destroy $path.ft}
+ set m [menu $path.ft -tearoff no]
+ foreach ft {lowpass highpass qbandpass bandpass notch allpass peakingEQ lowShelf highShelf} {
+ $m add command -label $ft -command "::ix::filter_type $path $target $n $ft"
+ }
+ tk_popup $path.ft $x $y
+ }
+ proc filter_type {path target n type} {
+ $path.filter itemconfigure type_$n -text "$type"
+ filter_update $path $target $n
+ }
+ proc filter_click {path target x y} {
+ variable _
+ filter_move $path $target $_($target:recent) $x $y
+ }
+ proc filter_move {path target n px py} {
+ variable _
+ $path.filter coords sqr_$n [expr $px - 5] [expr $py - 5] [expr $px + 5] [expr $py + 5]
+ $path.filter coords type_$n [expr $px - 9] [expr $py]
+ $path.filter coords q_$n [expr $px + 9] [expr $py]
+ filter_motion $path.filter $target $px $py
+ set _($target:recent) $n
+ filter_update $path $target $n
+ }
+ proc filter_locus {path target n px py} {
+ variable _
+ set _($target:lx) $px
+ }
+ proc filter_move_q {path target n px py} {
+ variable _
+ set delta [expr ($px.0 - $_($target:lx).0) / 25]
+ set move [expr [$path.filter itemcget q_$n -text] + $delta]
+ if {$move > 0} {
+ $path.filter itemconfigure q_$n -text $move
+ }
+ filter_update $path $target $n
+ set _($target:lx) $px
+ }
+ proc filter_gridlines {path target lines} {
+ variable _
+ puts "gridlines"
+ set color white
+ set w $path.filter
+ $w delete gridlines
+ set gh [winfo height $w]
+ set gw [winfo width $w]
+ for {set x 1} {$x <= $lines} {incr x} {
+ if {$lines < 16 && $lines > 0} {
+ set oh [expr $gh.0 * $x.0 / $lines.0]
+ set ow [expr $gw.0 * $x.0 / $lines.0]
+ $w create line $ow 0 $ow $gh -fill $color -tags gridlines
+ $w create line 0 $oh $gw $oh -fill $color -tags gridlines
+ set fontsize [expr int(80.0/$lines.0)]
+ $w create text $ow [expr $gh - $fontsize] -font [list {Bitstream Vera Sans} $fontsize] -tags gridlines -text [expr int([filter_invtr_x $path $target $ow])]
+ }
+ }
+ $w raise ${target}sqr
+ }
+}
+#> filter frame
+#. -bd 3 #w 384 #h 144 #bg gray90 #div 6 #n 3
+#. #log 1 #rate 44100
+#. @div ::ix::filter_gridlines .- .| .#1
+#. @params ::ix::filter_lp .- .| .#args
+puts "filter .- .|"
+::ix::filter_new .- .| .#w .#h .#bg .#div .#log .#rate .#n
|