Question

我有gizmoB，它以照相机作为输入。 GizmoB居住在GizmoA中，GizmoA也将相机作为输入。我希望gizmoB能够通过表达式访问相机。但是我似乎没有做任何事情。 XML脚本可能会更好地解释它。

基本上是Camera-> GizmoA-> GizmoB。

感谢您的帮助。也许我走错了路，自从我使用Nuke和Python以来已经有一段时间了。

#! C:/Program Files/Nuke10.0v3/nuke-10.0.3.dll -nx
version 10.0 v3
define_window_layout_xml {<?xml version="1.0" encoding="UTF-8"?>
<layout version="1.0">
    <window x="0" y="0" w="1920" h="848" screen="0">
        <splitter orientation="1">
            <split size="40"/>
            <dock id="" hideTitles="1" activePageId="Toolbar.1">
                <page id="Toolbar.1"/>
            </dock>
            <split size="1241" stretch="1"/>
            <splitter orientation="2">
                <split size="287"/>
                <dock id="" activePageId="Viewer.2">
                    <page id="Viewer.2"/>
                    <page id="Viewer.1"/>
                </dock>
                <split size="495"/>
                <dock id="" activePageId="DAG.2">
                    <page id="DAG.1"/>
                    <page id="Curve Editor.1"/>
                    <page id="DopeSheet.1"/>
                    <page id="DAG.2"/>
                </dock>
            </splitter>
            <split size="615"/>
            <dock id="" activePageId="Properties.1" focus="true">
                <page id="Properties.1"/>
            </dock>
        </splitter>
    </window>
</layout>
}
Root {
 inputs 0
 name Q:/data/test.nk
 title "sq2600 s1 - nuke_scripts.nk"
 frame 2
 last_frame 96
 lock_range true
 colorManagement Nuke
 views {
  {LFT ""}
  {RGT ""}
 }
 addUserKnob {20 User}
 addUserKnob {1 lt_res}
 lt_res "\$\{a_res\}"
 addUserKnob {1 mp_res}
 mp_res 1
 addUserKnob {1 fx_res}
 fx_res "\$\{a_res\}"
 addUserKnob {1 mpaint_res +INVISIBLE}
 addUserKnob {1 lighting_res +INVISIBLE}
 addUserKnob {4 deptMode l "Choose a department mode:" M {none "Image Finaling" Layout Lighting FX}}
}
Camera2 {
 inputs 0
 read_from_file true
 rot_order XYZ
 translate {2.836216927 8.794775009 13.20492458}
 rotate {-17.39999962 22.20000076 7.170989063e-014}
 focal 35
 haperture 35.99992752
 vaperture 23.99995222
 near 0.1000000015
 far 25
 file camera1.fbx
 fbx_node_name {{7} "Producer Perspective" "Producer Top" "Producer Bottom" "Producer Front" "Producer Back" "Producer Right" "Producer Left" camera1}
 name Camera1
 xpos 1333
 ypos 5163
}
set N5363c00 [stack 0]
Read {
 inputs 0
 file ../images/test.%04d.exr
 format "1024 768 0 0 1024 768 1 "
 last 96
 origlast 96
 origset true
 name Read1
 xpos 1156
 ypos 5213
}
set N3ac68800 [stack 0]
Group {
 inputs 2
 name GizmoC
 label "(\[value space_transform])"
 selected true
 xpos 1449
 ypos 5282
 addUserKnob {20 SpaceTransform}
 addUserKnob {26 info l "" +STARTLINE T "Connect camera for transformation"}
 addUserKnob {26 ""}
 addUserKnob {41 in l input T Shuffle1.in}
 addUserKnob {4 data_type l "data type" M {"normal vectors" "point positions"}}
 data_type "point positions"
 addUserKnob {4 space_transform l "space transform" M {"cam to world" "world to cam" ""}}
 space_transform "world to cam"
 addUserKnob {41 out l output T ShuffleCopy1.out2}
 addUserKnob {26 ""}
}
 Input {
  inputs 0
  name cam
  xpos 852
  ypos -563
  number 1
 }
 Axis2 {
  name Axis3
  xpos 862
  ypos -489
 }
 NoOp {
  name NoOp1
  label "camera scale"
  xpos 852
  ypos -399
  addUserKnob {20 User}
  addUserKnob {13 scale}
  scale {{"\[value \[topnode parent.input1].scaling.x]"} {"\[value \[topnode parent.input1].scaling.y]"} {"\[value \[topnode parent.input1].scaling.z]"}}
  addUserKnob {7 uniform_scale l "uniform scale"}
  uniform_scale {{"\[value \[topnode parent.input1].uniform_scale]"}}
  addUserKnob {13 total_scale l "total scale"}
  total_scale {{"scale*uniform_scale ? 1/(scale*uniform_scale) : 0"} {"scale*uniform_scale ? 1/(scale*uniform_scale) : 0"} {"scale*uniform_scale ? 1/(scale*uniform_scale) : 0"}}
 }
 Input {
  inputs 0
  name src
  xpos 164
  ypos -564
 }
 Dot {
  name Dot7
  xpos 198
  ypos -482
 }
set N59756400 [stack 0]
 Shuffle {
  in rgb
  alpha black
  out rgb
  name Shuffle1
  label "in: \[value in]"
  xpos 400
  ypos -489
 }
 Dot {
  name Dot1
  xpos 434
  ypos -397
 }
set N529ffc00 [stack 0]
 Dot {
  name Dot2
  xpos 666
  ypos -397
 }
 Add {
  channels rgb
  value {{-parent.Axis3.world_matrix.3} {-parent.Axis3.world_matrix.7} {-parent.Axis3.world_matrix.11} 0}
  name Add1
  label "inverse translation"
  xpos 632
  ypos -246
  disable {{!parent.data_type}}
 }
 ColorMatrix {
  matrix {
      {{"parent.Axis3.world_matrix.0 * parent.NoOp1.total_scale.x"} {"parent.Axis3.world_matrix.1 * parent.NoOp1.total_scale.y"} {"parent.Axis3.world_matrix.2 * parent.NoOp1.total_scale.z"}}
      {{"parent.Axis3.world_matrix.4 * parent.NoOp1.total_scale.x"} {"parent.Axis3.world_matrix.5 * parent.NoOp1.total_scale.y"} {"parent.Axis3.world_matrix.6 * parent.NoOp1.total_scale.z"}}
      {{"parent.Axis3.world_matrix.8 * parent.NoOp1.total_scale.x"} {"parent.Axis3.world_matrix.9 * parent.NoOp1.total_scale.y"} {"parent.Axis3.world_matrix.10 * parent.NoOp1.total_scale.z"}}
    }
  invert true
  name ColorMatrix3
  label "world to cam"
  xpos 632
  ypos -184
  disable {{hasError}}
 }
 Dot {
  name Dot3
  xpos 666
  ypos -77
 }
push $N529ffc00
 ColorMatrix {
  matrix {
      {{"parent.Axis3.world_matrix.0 * parent.NoOp1.total_scale.x"} {"parent.Axis3.world_matrix.1 * parent.NoOp1.total_scale.y"} {"parent.Axis3.world_matrix.2 * parent.NoOp1.total_scale.z"}}
      {{"parent.Axis3.world_matrix.4 * parent.NoOp1.total_scale.x"} {"parent.Axis3.world_matrix.5 * parent.NoOp1.total_scale.y"} {"parent.Axis3.world_matrix.6 * parent.NoOp1.total_scale.z"}}
      {{"parent.Axis3.world_matrix.8 * parent.NoOp1.total_scale.x"} {"parent.Axis3.world_matrix.9 * parent.NoOp1.total_scale.y"} {"parent.Axis3.world_matrix.10 * parent.NoOp1.total_scale.z"}}
    }
  name ColorMatrix2
  label "cam to world"
  xpos 400
  ypos -310
  disable {{hasError}}
 }
 Add {
  channels rgb
  value {{parent.Axis3.world_matrix.3} {parent.Axis3.world_matrix.7} {parent.Axis3.world_matrix.11} 0}
  name Add5
  label translation
  xpos 400
  ypos -246
  disable {{!parent.data_type}}
 }
 Switch {
  inputs 2
  which {{parent.space_transform}}
  name Switch1
  label transform
  xpos 400
  ypos -84
 }
push $N59756400
 ShuffleCopy {
  inputs 2
  alpha alpha2
  black red
  white green
  red2 blue
  green2 alpha
  out2 rgb
  name ShuffleCopy1
  label "out: \[value out2]"
  xpos 164
  ypos -84
  disable {{"!(NoOp1.total_scale.x && NoOp1.total_scale.y && NoOp1.total_scale.z && \[exists parent.input0])"}}
 }
 Output {
  name Output1
  xpos 164
  ypos 9
 }
end_group
Viewer {
 frame_range 1-96
 name Viewer1
 xpos 1449
 ypos 5211
}
push $N5363c00
push $N3ac68800
push 0
Group {
 inputs 3
 name gizmoA
 tile_color 0x5f5f5fff
 note_font "Bitstream Vera Sans"
 note_font_size 14
 note_font_color 0xfefefeff
 xpos 1156
 ypos 5380
}
 Output {
  inputs 0
  name Output
  xpos -1040
  ypos -504
 }
 Input {
  inputs 0
  name shot_cam
  label "\[value number]"
  xpos -901
  ypos -930
  number 2
 }
 Input {
  inputs 0
  name position
  label "\[value number]"
  xpos -1116
  ypos -935
  number 1
 }
 Group {
  inputs 2
  name GizmoB
  label "(\[value space_transform])"
  selected true
  xpos -958
  ypos -826
  addUserKnob {20 SpaceTransform}
  addUserKnob {26 info l "" +STARTLINE T "Connect camera for transformation"}
  addUserKnob {26 ""}
  addUserKnob {41 in l input T Shuffle1.in}
  addUserKnob {4 data_type l "data type" M {"normal vectors" "point positions"}}
  data_type "point positions"
  addUserKnob {4 space_transform l "space transform" M {"cam to world" "world to cam" ""}}
  space_transform "world to cam"
  addUserKnob {41 out l output T ShuffleCopy1.out2}
  addUserKnob {26 ""}
 }
  Input {
   inputs 0
   name cam
   xpos 852
   ypos -563
   number 1
  }
  Axis2 {
   name Axis3
   xpos 862
   ypos -489
  }
  NoOp {
   name NoOp1
   label "camera scale"
   xpos 852
   ypos -399
   addUserKnob {20 User}
   addUserKnob {13 scale}
   scale {{"\[value \[topnode parent.input1].scaling.x]"} {"\[value \[topnode parent.input1].scaling.y]"} {"\[value \[topnode parent.input1].scaling.z]"}}
   addUserKnob {7 uniform_scale l "uniform scale"}
   uniform_scale {{"\[value \[topnode parent.input1].uniform_scale]"}}
   addUserKnob {13 total_scale l "total scale"}
   total_scale {{"scale*uniform_scale ? 1/(scale*uniform_scale) : 0"} {"scale*uniform_scale ? 1/(scale*uniform_scale) : 0"} {"scale*uniform_scale ? 1/(scale*uniform_scale) : 0"}}
  }
  Input {
   inputs 0
   name src
   xpos 164
   ypos -564
  }
  Dot {
   name Dot7
   xpos 198
   ypos -482
  }
set N374e8c00 [stack 0]
  Shuffle {
   in rgb
   alpha black
   out rgb
   name Shuffle1
   label "in: \[value in]"
   xpos 400
   ypos -489
  }
  Dot {
   name Dot1
   xpos 434
   ypos -397
  }
set N25e1bc00 [stack 0]
  Dot {
   name Dot2
   xpos 666
   ypos -397
  }
  Add {
   channels rgb
   value {{-parent.Axis3.world_matrix.3} {-parent.Axis3.world_matrix.7} {-parent.Axis3.world_matrix.11} 0}
   name Add1
   label "inverse translation"
   xpos 632
   ypos -246
   disable {{!parent.data_type}}
  }
  ColorMatrix {
   matrix {
       {{"parent.Axis3.world_matrix.0 * parent.NoOp1.total_scale.x"} {"parent.Axis3.world_matrix.1 * parent.NoOp1.total_scale.y"} {"parent.Axis3.world_matrix.2 * parent.NoOp1.total_scale.z"}}
       {{"parent.Axis3.world_matrix.4 * parent.NoOp1.total_scale.x"} {"parent.Axis3.world_matrix.5 * parent.NoOp1.total_scale.y"} {"parent.Axis3.world_matrix.6 * parent.NoOp1.total_scale.z"}}
       {{"parent.Axis3.world_matrix.8 * parent.NoOp1.total_scale.x"} {"parent.Axis3.world_matrix.9 * parent.NoOp1.total_scale.y"} {"parent.Axis3.world_matrix.10 * parent.NoOp1.total_scale.z"}}
     }
   invert true
   name ColorMatrix3
   label "world to cam"
   xpos 632
   ypos -184
   disable {{hasError}}
  }
  Dot {
   name Dot3
   xpos 666
   ypos -77
  }
push $N25e1bc00
  ColorMatrix {
   matrix {
       {{"parent.Axis3.world_matrix.0 * parent.NoOp1.total_scale.x"} {"parent.Axis3.world_matrix.1 * parent.NoOp1.total_scale.y"} {"parent.Axis3.world_matrix.2 * parent.NoOp1.total_scale.z"}}
       {{"parent.Axis3.world_matrix.4 * parent.NoOp1.total_scale.x"} {"parent.Axis3.world_matrix.5 * parent.NoOp1.total_scale.y"} {"parent.Axis3.world_matrix.6 * parent.NoOp1.total_scale.z"}}
       {{"parent.Axis3.world_matrix.8 * parent.NoOp1.total_scale.x"} {"parent.Axis3.world_matrix.9 * parent.NoOp1.total_scale.y"} {"parent.Axis3.world_matrix.10 * parent.NoOp1.total_scale.z"}}
     }
   name ColorMatrix2
   label "cam to world"
   xpos 400
   ypos -310
   disable {{hasError}}
  }
  Add {
   channels rgb
   value {{parent.Axis3.world_matrix.3} {parent.Axis3.world_matrix.7} {parent.Axis3.world_matrix.11} 0}
   name Add5
   label translation
   xpos 400
   ypos -246
   disable {{!parent.data_type}}
  }
  Switch {
   inputs 2
   which {{parent.space_transform}}
   name Switch1
   label transform
   xpos 400
   ypos -84
  }
push $N374e8c00
  ShuffleCopy {
   inputs 2
   alpha alpha2
   black red
   white green
   red2 blue
   green2 alpha
   out2 rgb
   name ShuffleCopy1
   label "out: \[value out2]"
   xpos 164
   ypos -84
   disable {{"!(NoOp1.total_scale.x && NoOp1.total_scale.y && NoOp1.total_scale.z && \[exists parent.input0])"}}
  }
  Output {
   name Output1
   xpos 164
   ypos 9
  }
 end_group
end_group

Answer 1

对于此脚本，我关闭了read from fbx file选项，然后手动为Camera1设置了动画。

Patrick，我看到您打开了ColorMatrix1和ColorMatrix3中的值反转，如果您在RGB矩阵中有零，这会导致错误（因为{{1 }}个节点等于ColorMatrix）。

您已在0节点内编写了一个表达式（该表达式会影响NoOp1节点）：

ColorMatrix

表达式本身可以确定，但是parent.Axis3.world_matrix.0 * parent.NoOp1.total_scale.x和scale属性的默认值不能为uniform scale –它们必须为0 （适用于可见的RGB光谱）甚至+1（适用于不可见的PP光谱-负色值在NUKE中是很常见的，尤其是对于诸如点位置的渲染过程）。因此，您基于-1节点中total scale属性的三元运算符的条件表达式不正确：

NoOp1

因此您的表情至少必须类似于以下内容：

scale * uniform_scale ? 1/(scale * uniform_scale) : 0    // INCORRECT EXPRESSION

即使scale * uniform_scale ? abs(1/(scale * uniform_scale)) : 1不起作用，您也会获得if-statement的默认值，用于在1中进行缩放。

else-statement和scale旋钮中的值等于uniform scale，因为您应该为顶部节点分配输入的正确名称（TCL表达式本身的语法也可以）：

或：

[value [topnode parent.Camera1].scaling.x]
[value [topnode parent.Camera1].scaling.y]
[value [topnode parent.Camera1].scaling.z]

[value [topnode parent.Camera1].uniform_scale]

此外，我注意到您在[value [topnode parent.input1].scaling.x] // Axis node has 'input0' and 'input1' [value [topnode parent.input1].scaling.y] [value [topnode parent.input1].scaling.y] [value [topnode parent.input1].uniform_scale]和Switch1节点中的两个表达式中都有错误。 Switch2节点内的表达式如下：

Switch1

但是，正如您所看到的，此表达式也会导致错误（我在NUKE脚本中根本看不到任何parent.space_transform // NO 'space_transform' HERE属性）：

因此我修复了所有上述错误，现在脚本可以正常工作。

通过单击播放此GIF序列。

我只能共享工作脚本的加密XML代码。因此，要阅读该书，您需要The Foundry NUKE 11.3v1 非商业版。这是我的代码（复制粘贴此非常长的字符串）：

space_transform

希望这会有所帮助。

NUKE表达式引用顶级相机

1 个答案: