yeh thanks for that again: it works just fine. it does choke a wee bit in the gui every now and then but it totally does what I was aiming for.

I also liked Jose's approach so thanks for that too - very creative!

I guess I'll just wait for new releases then and hope it gets incorporated as a one stop solution? question mark

cheers everyone



that's what I did to work around this. Fairly rough and untested though:

CheckerBoard2 {
 inputs 0
 name CheckerBoard1
 selected true
 xpos -148
 ypos -140
}
Transform {
 translate {{"\[python -execlocal cam\\ =\\
nuke.toNode('Camera1')\\naxis\\ =\\ nuke.toNode('Axis1')\\nwm\\ =\\
axis\\\['world_matrix'\\].valueAt(nuke.frame())\\nxform\\ =\\
nuke.math.Vector3(wm\\\[3\\],\\ wm\\\[7\\],\\ wm\\\[11\\])\\nret\\ =\\
nukescripts.snap3d.projectPoint(cam,\\ xform).x]"} {"\[python
-execlocal cam\\ =\\ nuke.toNode('Camera1')\\naxis\\ =\\
nuke.toNode('Axis1')\\nwm\\ =\\
axis\\\['world_matrix'\\].valueAt(nuke.frame())\\nxform\\ =\\
nuke.math.Vector3(wm\\\[3\\],\\ wm\\\[7\\],\\ wm\\\[11\\])\\nret\\ =\\
nukescripts.snap3d.projectPoint(cam,\\ xform).y]"}}
 center {1024 778}
 name Transform1
 selected true
 xpos -148
 ypos -68
}
Camera2 {
 inputs 0
 name Camera1
 selected true
 xpos -420
 ypos -70
}
push $cut_paste_input
Axis2 {
 rotate {0 -4 0}
 name parentAxis
 selected true
 xpos -366
 ypos -323
}
Axis2 {
 translate {-0.392 -0.04399999976 -2.140000105}
 name Axis1
 selected true
 xpos -293
 ypos -238
}
Scene {
 name Scene1
 selected true
 xpos -293
 ypos -129
}
push 0
ScanlineRender {
 inputs 3
 output_motion_vectors_type accurate
 name ScanlineRender1
 selected true
 xpos -303
 ypos -16
}
Merge2 {
 inputs 2
 name Merge1
 selected true
 xpos -148
 ypos -16
}







On 19/07/12 2:37 PM, Jose Fernandez de Castro wrote:
I'm wondering if anyone has used the snap3d.project points successfully to achieve this (I mean, if it's actually stable and usable). For starters it seems like it only takes the root format of the script, but it might be possible to cheat it through the win_scale u v. Anyway, just curious, an example setup:

set cut_paste_input [stack 0]
version 6.3 v8
Axis2 {
inputs 0
translate {{curve i x1048 -1.396000028 x1088 -0.9840000272 x1108 -0.1986213923 x1119 0.3740000129} {curve i x1048 0.5559999943 x1088 0.3759999871 x1102 0.41049599 x1108 0.4199999869 x1119 -0.5339999795} {curve i x1048 0 x1088 0 x1108 0 x1119 0}}
name Axis3
selected true
xpos 236
ypos 21
}
push $cut_paste_input
Camera2 {
translate {{curve x1104 0} {curve x1080 0.3 x1104 0} {curve x1104 7.050000191}}
rotate {0 5 0}
focal 13.5
name Camera3
selected true
xpos -25
ypos 68
addUserKnob {20 ProjectFrame l "Project Frame"}
addUserKnob {3 frameproj l "Projection Frame"}
frameproj 1000
addUserKnob {6 currFrame l "Set to current frame" +STARTLINE}
addUserKnob {22 setFrame l "Set Projection Frame" T "\nknoblist=\[]\nknoblistPre=\[\"translate\",\"rotate\",\"pivot\",\"scaling\",\"uniform_scale\",\"skew\",\"focal\",\"haperture\",\"vaperture\",\"far\",\"near\",\"win_scale\",\"win_translate\",\"winroll\",\"focal_point\",\"fstop\"]\nfor name in knoblistPre:\n knoblist.append(name)\n knoblist.append(name+\"_r\")\n knoblist.append(name+\"_l\")\n \ntry:\n nuke.thisNode().knob(\"read_from_file\").setValue(False)\nexcept(AttributeError):\n pass\nanimation=False\n\nfor i in knoblist:\n knob=nuke.thisNode().knob(i)\n if knob:\n if knob.hasExpression():\n animation=True\n newexpression=knob.toScript().split(\"\{\")\[1].split(\"\}\")\[0]\n if \"(frameproj)\" not in newexpression:\n knob.setExpression(\"%s(frameproj)\"%(newexpression))\n \n elif knob.isAnimated():\n print \"this ran\"\n animation=True\n knob.setExpression(\"curve(frameproj)\")\n\n\nif nuke.thisNode().knob(\"currFrame\").value():\n nuke.thisNode().knob(\"frameproj\").setValue(nuke.frame())\nif animation==True:\n previouslabel=nuke.thisNode().knob(\"label\").value()\n previouslabel=previouslabel.replace(\"\\nProjection frame: \[value frameproj]\",\"\")\n newlabel=previouslabel+\"\\nProjection frame: \[value frameproj]\"\n nuke.thisNode().knob(\"label\").setValue(newlabel)\n" +STARTLINE} addUserKnob {22 unsetFrame l "Unset Projection Frame" T "\nknoblist=\[]\nknoblistPre=\[\"translate\",\"rotate\",\"pivot\",\"scaling\",\"uniform_scale\",\"skew\",\"focal\",\"haperture\",\"vaperture\",\"far\",\"near\",\"win_scale\",\"win_translate\",\"winroll\",\"focal_point\",\"fstop\"]\nfor name in knoblistPre:\n knoblist.append(name)\n knoblist.append(name+\"_r\")\n knoblist.append(name+\"_l\")\nfor i in knoblist:\n knob=nuke.thisNode().knob(i)\n if knob:\n if knob.hasExpression():\n newexpression=knob.toScript().split(\"\{\")\[1].split(\"\}\")\[0].replace(\"(frameproj)\",\"\")\n if \"curve\" in newexpression:\n knob.setExpression(\"curve\")\n else:\n knob.setExpression(newexpression)\n\n\npreviouslabel= nuke.thisNode().knob(\"label\").value()\npreviouslabel=previouslabel.replace(\"\\nProjection frame: \[value frameproj]\",\"\")\nnuke.thisNode().knob(\"label\").setValue(previouslabel)\n" +STARTLINE}
}
set Ne20aad70 [stack 0]
Scene {
inputs 2
name Scene3
selected true
xpos 236
ypos 249
}
push $Ne20aad70
CheckerBoard2 {
inputs 0
format "1920 1080 0 0 1920 1080 1 HD"
name CheckerBoard3
selected true
xpos -175
ypos 10
}
Group {
inputs 2
name project_point2
selected true
xpos -109
ypos 310
addUserKnob {20 User}
addUserKnob {13 point3d}
point3d {{parent.Axis3.translate.left} {parent.Axis3.translate.left} {parent.Axis3.translate.left}}
addUserKnob {12 point2d}
point2d {{"\[python -execlocal n=nuke.thisNode()\\nret=nukescripts.snap3d.projectPoint(camera=n.input(1),point=(n\\\[\\\"point3d\\\"\\].value(0),n\\\[\\\"point3d\\\"\\].value(1),n\\\[\\\"point3d\\\"\\].value(2)))\\\[0\\]]" x1048 1400} {"\[python -execlocal n=nuke.thisNode()\\nret=nukescripts.snap3d.projectPoint(camera=n.input(1),point=(n\\\[\\\"point3d\\\"\\].value(0),n\\\[\\\"point3d\\\"\\].value(1),n\\\[\\\"point3d\\\"\\].value(2)))\\\[1\\]]" x1048 698}}
}
Input {
 inputs 0
 name IMAGE
 xpos -50
 ypos -94
}
Output {
 name Output1
 xpos -50
 ypos 10
}
Input {
 inputs 0
 name CAMERA
 selected true
 xpos 145
 ypos -111
 number 1
}
end_group



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