3D 뷰어에서 메시 정점을 캡처하고, 카메라를 통해 투영한 다음, 변환에 사용할 수 있도록 평균화된 2D XY 트랙을 생성합니다.
Reconcile Vertex Fast는 선택한 지오메트리 정점을 단일 2D 화면 공간 애니메이션으로 변환합니다. 3D 뷰어에서 ReadGeo 메쉬의 정점을 선택하고 해당 인덱스를 캡처한 다음, 이미지 입력의 프레임 범위에 걸쳐 연결된 카메라를 통해 투영합니다.
여러 개의 캡처된 정점이 각 프레임마다 평균화되어 하나의 XY 출력 곡선으로 생성됩니다. 전체 3D 조정 워크플로 없이 알려진 메시 포인트에서 빠른 2D 트래킹이 필요할 때 사용하십시오.
프레임 범위에는 img를, 투영에는 cam을 연결하고, 계산을 위해 활성 3D 뷰어에서 메시가 보이도록 유지하십시오. 계산 후에는 베이크된 변환 곡선을 사용하여 Transform 노드를 생성하거나 XY 출력 노브를 사용하여 다른 노드를 구동할 수 있습니다.
set cut_paste_input [stack 0]
version 13.0 v1
push 0
push 0
push $cut_paste_input
Group {
inputs 3
name ReconcileVertex
tile_color 0x7f3030ff
selected true
xpos 12819
ypos -4378
addUserKnob {20 ReconcileVertexTab l ReconcileVertex}
addUserKnob {26 hdr_capture l "" +STARTLINE T "<b>1. Capture Vertices</b>"}
addUserKnob {26 capture_help l "" +STARTLINE T "Select vertices on your ReadGeo mesh in the 3D viewer, then click Capture. Multiple vertices are averaged."}
addUserKnob {22 btn_capture l "Capture Selection" t "Read the current vertex selection from the 3D viewer and store the vertex indices." T "import nuke\n\ntry:\n from nukescripts.snap3d import selectedVertexInfos\nexcept ImportError:\n from nukescripts import snap3d\n selectedVertexInfos = snap3d.selectedVertexInfos\n\nnode = nuke.thisNode()\ninfos = list(selectedVertexInfos(0.5))\nif not infos:\n nuke.message(\"No vertices selected. Select vertices on your ReadGeo mesh in the 3D viewer first.\")\nelse:\n pairs = \[\]\n for v in infos:\n pairs.append(\"{0}:{1}\".format(v.objnum, v.index))\n idx_str = \", \".join(pairs)\n node\[\"vertex_indices\"\].setValue(idx_str)\n node\[\"status\"\].setValue(\"{0} vertices captured\".format(len(pairs)))\n" +STARTLINE}
addUserKnob {22 btn_clear_capture l Clear t "Clear captured vertex indices." -STARTLINE T "import nuke\nn = nuke.thisNode()\nn\[\"vertex_indices\"\].setValue(\"\")\nn\[\"status\"\].setValue(\"Cleared\")\n"}
addUserKnob {1 vertex_indices l "Vertex Indices" t "Captured vertex indices as objnum:index pairs. You can also type these manually."}
addUserKnob {26 ""}
addUserKnob {26 hdr_calc l "" +STARTLINE T "<b>2. Calculate</b>"}
addUserKnob {26 calc_help l "" +STARTLINE T "Connect Camera and BG image (frame range from img input). Outputs averaged 2D position."}
addUserKnob {22 btn_calculate l Calculate t "Project captured vertices through the camera, average their screen positions, and store as a single 2D animation curve." T "import nuke\nimport math\n\n\ndef _get_cam(node):\n cam_input = node.input(1)\n if not (cam_input and isinstance(cam_input, nuke.Node)):\n return None\n if \"Camera\" in cam_input.Class():\n return cam_input\n top = nuke.toNode(nuke.tcl(\"full_name \[topnode %s\]\" % cam_input.name()))\n if top and \"Camera\" in top.Class():\n return top\n return None\n\n\ndef _cam_projection_matrix(cam, frame, fmt):\n wm = nuke.math.Matrix4()\n for i in range(16):\n wm\[i\] = cam\[\"matrix\"\].getValueAt(frame, i)\n wm.transpose()\n camTransform = wm.inverse()\n\n roll = float(cam\[\"winroll\"\].getValueAt(frame, 0))\n sx = float(cam\[\"win_scale\"\].getValueAt(frame, 0))\n sy = float(cam\[\"win_scale\"\].getValueAt(frame, 1))\n tx = float(cam\[\"win_translate\"\].getValueAt(frame, 0))\n ty = float(cam\[\"win_translate\"\].getValueAt(frame, 1))\n m = nuke.math.Matrix4()\n m.makeIdentity()\n m.rotateZ(math.radians(roll))\n m.scale(1.0 / sx, 1.0 / sy, 1.0)\n m.translate(-tx, -ty, 0.0)\n\n focal = float(cam\[\"focal\"\].getValueAt(frame))\n hap = float(cam\[\"haperture\"\].getValueAt(frame))\n near = float(cam\[\"near\"\].getValueAt(frame))\n far = float(cam\[\"far\"\].getValueAt(frame))\n proj_mode = int(cam\[\"projection_mode\"\].getValueAt(frame))\n p = nuke.math.Matrix4()\n p.projection(focal / hap, near, far, proj_mode == 0)\n\n aspect = float(fmt.height()) / float(fmt.width())\n t = nuke.math.Matrix4()\n t.makeIdentity()\n t.translate(1.0, 1.0 - (1.0 - aspect / float(fmt.pixelAspect())), 0.0)\n\n x_sc = float(fmt.width()) / 2.0\n y_sc = x_sc * fmt.pixelAspect()\n s = nuke.math.Matrix4()\n s.makeIdentity()\n s.scale(x_sc, y_sc, 1.0)\n\n return s * t * p * m * camTransform\n\n\ndef _project(cam_matrix, world_pos):\n v4 = nuke.math.Vector4(world_pos.x, world_pos.y, world_pos.z, 1.0)\n tp = cam_matrix * v4\n try:\n return (tp.x / tp.w, tp.y / tp.w)\n except ZeroDivisionError:\n return (0.0, 0.0)\n\n\ndef _get_frame_range(node):\n bg = node.input(0)\n if bg:\n first = bg.firstFrame()\n last = bg.lastFrame()\n if first != last:\n return nuke.FrameRange(\"{0}-{1}\".format(first, last))\n return nuke.FrameRange(\"{0}-{1}\".format(nuke.root().firstFrame(), nuke.root().lastFrame()))\n\n\ndef _find_geo_knob():\n if not nuke.activeViewer():\n return None\n viewer = nuke.activeViewer()\n viewer_node = viewer.node()\n if hasattr(viewer, \"getGeometryNodes\"):\n for n in viewer.getGeometryNodes():\n if \"geo_select\" in n.knobs():\n return n\[\"geo_select\"\]\n for n in nuke.allNodes(recurseGroups=True):\n if \"geo_select\" in n.knobs():\n return n\[\"geo_select\"\]\n if \"geo\" in viewer_node.knobs():\n k = viewer_node\[\"geo\"\]\n if hasattr(k, \"getGeometry\"):\n return k\n return None\n\n\ndef calculate(node):\n idx_str = node\[\"vertex_indices\"\].value().strip()\n if not idx_str:\n nuke.message(\"No vertices captured. Use Capture Selection first.\")\n return\n\n pairs = \[\]\n for part in idx_str.split(\",\"):\n part = part.strip()\n if \":\" in part:\n obj, vtx = part.split(\":\", 1)\n pairs.append((int(obj.strip()), int(vtx.strip())))\n if not pairs:\n nuke.message(\"Could not parse vertex indices.\")\n return\n\n cam = _get_cam(node)\n if cam is None:\n nuke.message(\"Connect a Camera to input 2 (cam).\")\n return\n\n fmt = node.format()\n if not fmt:\n fmt = nuke.root()\[\"format\"\].value()\n\n frange = _get_frame_range(node)\n geo_knob = _find_geo_knob()\n if geo_knob is None:\n nuke.message(\"No active 3D viewer found. Open a 3D viewer with your geometry visible.\")\n return\n\n num_verts = len(pairs)\n keys_x = \[\]\n keys_y = \[\]\n\n task = nuke.ProgressTask(\"Reconcile Vertices\")\n total = int(frange.last()) - int(frange.first()) + 1\n\n tmp = nuke.nodes.CurveTool()\n try:\n for i, frame in enumerate(frange):\n if task.isCancelled():\n break\n task.setProgress(int(100.0 * i / max(total, 1)))\n task.setMessage(\"Frame %d\" % frame)\n\n nuke.execute(tmp, frame, frame)\n cam_matrix = _cam_projection_matrix(cam, frame, fmt)\n\n objs = geo_knob.getGeometry()\n if objs is None:\n continue\n\n sum_x = 0.0\n sum_y = 0.0\n count = 0\n for obj_idx, vtx_idx in pairs:\n if obj_idx >= len(objs):\n continue\n pts = objs\[obj_idx\].points()\n if vtx_idx >= len(pts):\n continue\n pos = pts\[vtx_idx\]\n xform = objs\[obj_idx\].transform()\n wp = xform * nuke.math.Vector4(pos.x, pos.y, pos.z, 1.0)\n world_pos = nuke.math.Vector3(wp.x, wp.y, wp.z)\n sx, sy = _project(cam_matrix, world_pos)\n sum_x += sx\n sum_y += sy\n count += 1\n\n if count > 0:\n keys_x.append(nuke.AnimationKey(frame, sum_x / count))\n keys_y.append(nuke.AnimationKey(frame, sum_y / count))\n finally:\n nuke.delete(tmp)\n del task\n\n opknob = node\[\"output\"\]\n opknob.clearAnimated()\n opknob.setAnimated()\n for ch, curve in enumerate(opknob.animations()):\n curve.addKey(\[keys_x, keys_y\]\[ch\])\n\n node\[\"status\"\].setValue(\"{0} verts averaged, projected over {1}\".format(num_verts, frange))\n\n\nif __name__ == \"__main__\":\n calculate(nuke.thisNode())\n" +STARTLINE}
addUserKnob {22 btn_clear_calc l Clear t "Clear the output animation." -STARTLINE T "import nuke\n\nnode = nuke.thisNode()\nopknob = node\[\"output\"\]\nopknob.clearAnimated()\nopknob.setValue(0, 0)\nopknob.setValue(0, 1)\nnode\[\"status\"\].setValue(\"Output cleared\")\n"}
addUserKnob {12 output l "XY Output"}
addUserKnob {26 ""}
addUserKnob {26 hdr_output l "" +STARTLINE T "<b>3. Output</b>"}
addUserKnob {22 btn_transform l "Create Transform" t "Create a Transform node with the calculated 2D translate curve." T "import nuke\n\nnode = nuke.thisNode()\nopknob = node\[\"output\"\]\nif not opknob.isAnimated():\n nuke.message(\"No calculated data. Run Calculate first.\")\nelse:\n grid_y = int(nuke.toNode(\"preferences\").knob(\"GridHeight\").value())\n with nuke.root():\n xf = nuke.nodes.Transform()\n xf.setXYpos(node.xpos(), node.ypos() + grid_y * 3)\n tknob = xf\[\"translate\"\]\n tknob.clearAnimated()\n tknob.setAnimated()\n src_anims = opknob.animations()\n for ch, curve in enumerate(tknob.animations()):\n if ch < len(src_anims):\n curve.addKey(src_anims\[ch\].keys())\n node\[\"status\"\].setValue(\"Transform node created\")\n" +STARTLINE}
addUserKnob {26 ""}
addUserKnob {26 status l Status T "Ready"}
addUserKnob {26 ""}
addUserKnob {26 lbl l "" +STARTLINE T "ReconcileVertex v2.1"}
addUserKnob {22 btn_website l DerekVFX.ca T "nuke.tcl('start', 'https://derekvfx.ca')" +STARTLINE}
}
Input {
inputs 0
name cam
label "\[value number]"
xpos 400
ypos -301
number 1
}
Input {
inputs 0
name geo
label "\[value number]"
xpos 197
ypos -307
number 2
}
Input {
inputs 0
name img
label "\[value number]"
xpos 620
ypos -302
}
Output {
name Output1
selected true
xpos 620
ypos 158
}
end_group