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Overview
| Comment: | fixed G2/G3 (arcs) to gcode reader |
|---|---|
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | ec0df6213ab5f9c02c27450562dcd5d1f5399fc5 |
| User & Date: | rmelton 2013-10-24 17:08:25 |
Context
|
2013-10-24
| ||
| 23:03 | fixed G2/G3 (arcs) last commit had deg/rad mistake check-in: 947f22cec0 user: rmelton tags: trunk | |
| 17:08 | fixed G2/G3 (arcs) to gcode reader check-in: ec0df6213a user: rmelton tags: trunk | |
|
2013-10-23
| ||
| 19:16 | fixed exercise to work at z0 check-in: 80ef4bd8f0 user: rmelton tags: trunk | |
Changes
Changes to lib/gcode/gcode_0.1.tcl.
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$type\
$color\
[list $cfg(X) $cfg(Y) $cfg(Z)]\
[list $new(X) $new(Y) $new(Z)]\
]
lassign [list $new(X) $new(Y) $new(Z) $new(E)] cfg(X) cfg(Y) cfg(Z) cfg(E)
}
proc G28 {args} {;## move to origin
variable cfg
if {($cfg(X) != 0) || ($cfg(Y) != 0) || ($cfg(Z) != 0)} {
## move to 0
}
lassign {0 0 0} cfg(X) cfg(Y) cfg(Z)
}
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$type\
$color\
[list $cfg(X) $cfg(Y) $cfg(Z)]\
[list $new(X) $new(Y) $new(Z)]\
]
lassign [list $new(X) $new(Y) $new(Z) $new(E)] cfg(X) cfg(Y) cfg(Z) cfg(E)
}
proc G2 {args} {
## clockwise arc (ref http://linuxcnc.org/docs/html/gcode/gcode.html#sec:G2-G3-Arc)
## note this code is only valid for XY arcs
variable cfg
variable pathList
set new(X) $cfg(X)
set new(Y) $cfg(Y)
set new(Z) $cfg(Z)
set new(E) $cfg(E)
set offsetI 0 ;# x offset to center
set offsetJ 0 ;# y offset to center
while {[llength $args] > 0} {
set args [lassign $args cmd]
switch -regexp -matchvar matchvar -- $cmd {
{X(-?[[:digit:]]+(\.[[:digit:]]+)?)} {
set new(X) [expr {$cfg(scale)*[lindex $matchvar 1]+($cfg(relP) ? $cfg(X) : 0)}]
#puts stderr "X $matchvar"
}
{Y(-?[[:digit:]]+(\.[[:digit:]]+)?)} {
set new(Y) [expr {$cfg(scale)*[lindex $matchvar 1]+($cfg(relP) ? $cfg(Y) : 0)}]
#puts stderr "Y $matchvar"
}
{F(-?[[:digit:]]+(\.[[:digit:]]+)?)} {
#puts stderr "F $matchvar"
}
{E(-?[[:digit:]]+(\.[[:digit:]]+)?)} {
set new(E) [expr {$cfg(scale)*[lindex $matchvar 1]+($cfg(relE) ? $cfg(E) : 0)}]
#puts stderr "E $matchvar"
}
{I(-?[[:digit:]]+(\.[[:digit:]]+)?)} {
set offsetI [expr {$cfg(scale)*[lindex $matchvar 1]}]
}
{J(-?[[:digit:]]+(\.[[:digit:]]+)?)} {
set offsetJ [expr {$cfg(scale)*[lindex $matchvar 1]}]
}
default {error "G2 bad cmd=$cmd"}
}
}
if {$new(E) > $cfg(E)} {
set type [list fill Layer_$cfg(layerNum)]
set color purple
if {$new(Z) > $cfg(layerZ)} {
incr cfg(layerNum)
set cfg(layerZ) $new(Z)
}
set width 1
} else {
set type [list move Layer_$cfg(layerNum)]
set color yellow
set width 1
}
set Xc [expr {$cfg(X)+$offsetI}]
set Yc [expr {$cfg(Y)+$offsetJ}]
#compute "start" angle
set theta0 [expr {atan((0-$offsetJ)/(0-$offsetI))}]
#compute "stop" angle
set theta1 [expr {atan(($new(Y)-$Yc)/($new(X)-$Xc))}]
set stepAngle -5
lassign [list $cfg(X) $cfg(Y)] x0 y0
set Pi 3.14159265
for {set deg [expr {$theta0+$stepAngle}]} {$deg >= $theta1} {incr deg $stepAngle} {
set rads [expr {$deg/360.0*2*$Pi}]
set x1 [expr {cos($rads)*$radius+$Xc}]
set y1 [expr {sin($rads)*$radius+$Yc}]
lappend pathList [list \
$width\
$type\
$color\
[list $x0 $y0 $cfg(Z)]\
[list $x1 $y1 $cfg(Z)]\
]
lassign [list $x1 $y1] x0 y0
}
lassign [list $new(X) $new(Y) $new(E)] cfg(X) cfg(Y) cfg(E)
}
proc G3 {args} {
## counter-clockwise arc (ref http://linuxcnc.org/docs/html/gcode/gcode.html#sec:G2-G3-Arc)
variable cfg
variable pathList
set new(X) $cfg(X)
set new(Y) $cfg(Y)
set new(Z) $cfg(Z)
set new(E) $cfg(E)
set offsetI 0 ;# x offset to center
set offsetJ 0 ;# y offset to center
while {[llength $args] > 0} {
set args [lassign $args cmd]
switch -regexp -matchvar matchvar -- $cmd {
{X(-?[[:digit:]]+(\.[[:digit:]]+)?)} {
set new(X) [expr {$cfg(scale)*[lindex $matchvar 1]+($cfg(relP) ? $cfg(X) : 0)}]
#puts stderr "X $matchvar"
}
{Y(-?[[:digit:]]+(\.[[:digit:]]+)?)} {
set new(Y) [expr {$cfg(scale)*[lindex $matchvar 1]+($cfg(relP) ? $cfg(Y) : 0)}]
#puts stderr "Y $matchvar"
}
{F(-?[[:digit:]]+(\.[[:digit:]]+)?)} {
#puts stderr "F $matchvar"
}
{E(-?[[:digit:]]+(\.[[:digit:]]+)?)} {
set new(E) [expr {$cfg(scale)*[lindex $matchvar 1]+($cfg(relE) ? $cfg(E) : 0)}]
#puts stderr "E $matchvar"
}
{I(-?[[:digit:]]+(\.[[:digit:]]+)?)} {
set offsetI [expr {$cfg(scale)*[lindex $matchvar 1]}]
}
{J(-?[[:digit:]]+(\.[[:digit:]]+)?)} {
set offsetJ [expr {$cfg(scale)*[lindex $matchvar 1]}]
}
default {error "G3 bad cmd=$cmd"}
}
}
if {$new(E) > $cfg(E)} {
set type [list fill Layer_$cfg(layerNum)]
set color purple
if {$new(Z) > $cfg(layerZ)} {
incr cfg(layerNum)
set cfg(layerZ) $new(Z)
}
set width 1
} else {
set type [list move Layer_$cfg(layerNum)]
set color yellow
set width 1
}
set Xc [expr {$cfg(X)+$offsetI}]
set Yc [expr {$cfg(Y)+$offsetJ}]
#compute "start" angle
set theta0 [expr {atan((0-$offsetJ)/(0-$offsetI))}]
#compute "stop" angle
set theta1 [expr {atan(($new(Y)-$Yc)/($new(X)-$Xc))}]
set stepAngle 5
lassign [list $cfg(X) $cfg(Y)] x0 y0
set Pi 3.14159265
for {set deg [expr {$theta0+$stepAngle}]} {$deg <= $theta1} {incr deg $stepAngle} {
set rads [expr {$deg/360.0*2*$Pi}]
set x1 [expr {cos($rads)*$radius+$Xc}]
set y1 [expr {sin($rads)*$radius+$Yc}]
lappend pathList [list \
$width\
$type\
$color\
[list $x0 $y0 $cfg(Z)]\
[list $x1 $y1 $cfg(Z)]\
]
lassign [list $x1 $y1] x0 y0
}
lassign [list $new(X) $new(Y) $new(E)] cfg(X) cfg(Y) cfg(E)
}
proc G28 {args} {;## move to origin
variable cfg
if {($cfg(X) != 0) || ($cfg(Y) != 0) || ($cfg(Z) != 0)} {
## move to 0
}
lassign {0 0 0} cfg(X) cfg(Y) cfg(Z)
}
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