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Showing results for tags 'selection'.
Found 24 results
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Hi all! I had a bit of a question re scripting selections. Ive been using the excellent soputils.selectGroupParm() in a few of my tools but Ive recently needed the ability to select objects in a similar way. Ive done some looking into it and there doesn't seem to be a simple way to get an object selection state in a viewport after clicking an action button. Does anyone know how one would go about implementing like this or is it going to be a case of learning how the python state system works (I wouldnt know where to start with it right now). The image demonstrates what Im trying to achieve. You click the little arrow and the viewer enters an object/geo selection mode (similar to selectGroupParm) and on completion it returns a list of object node paths. Thanks!
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Often when I use loop selection (Shift+A) I get selection suggestions that make no sense. Is it possible to adjust the tool, to better follow edges in a "natural" way? I have used pattern selection, which works great, but I find it a bit tedious for these kinds of selection.
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Hello! I am undergrad student and I'm fairly new to both Houdini and this forum, so any help is appreciated I have a problem with selecting a box from a set of boxes based on distance. I did some research and found out that this can be achieved with distance from geometry node. So I have scattered boxes and I can mask some of these based on distance with this node. But my problem is that I could not extract those entities from the group. Is there a way that I could pick the closest box, and then use that box as an input for the rest of the process?
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Hi, I'm looking for a way to fine-tune exactly what visible OBJ nodes appear in a certain camera. I'm working on a Wrap-like tool similar to what Pixar show here: In terms of having the two camera views side by side, they have two separate obj networks for the source and destination meshes. I would like to contain the process in one network. If I have a simple OBJ network like so : And two cameras pointing to it, is there a way for Camera_A to only show sphere1 in the viewport, and hide box1, despite the fact that both are marked visible? I don't believe it's an option to collect the specific obj nodes together in a Geometry node via obj merges or similar, and just point the camera to that, since the OBJ transforms need to be directly interactible from the camera. Thanks for your help
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Hi, I am having trouble having my custom HDA group selection to behave the same way as existing nodes to work with group selections. For exemple, if I select certain edges of my object and create the node "Normal", it will automatically assign those edges to the node group, however, If I do the same with a HDA the result is not the same. I can add the "selectGroupParm" script to the group action button so I can create the group after the node creation, but I was wondering what extra steps I need to make in order to make it automatic when summoning the HDA. Thanks!!
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Hi, I am trying to select a node with a button in a HDA, but when I do select it, the object level switches to geometry level, how can I prevent that? I would like to select a drawcurve with an enter included, so when I press the button I will have the cursor switch to the red sphere icon to start drawing. any ideas would be highly appreciated it. Thanks,
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Hello, I made a rigid body simulation where I have different kind of pieces, like pavement, road etc. I grouped them in a group called "group1" How can I write this in vex in pointwrangle? Take the group1 and if the points in group1 are under -1 in @P.y then delete them. Thank you for your help
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Been searching for a while and I can't figure out how to split a selection of edges. For example, lets say you have a sphere, and you double click the equator edge loop to select it. What node splits that edge selection into two edges, so that you can now “select 3d connected geometry” on either newly created hemisphere? in 3ds Max it would be an edit poly > split (on edge sub object selection) Thanks! Adam
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i am trying to render out specific frames from my timeline, can this be automated and saved out to disk? i would like to have control over which frames exactly or control via a pattern, for example per 10 frames render
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So I'm making a HDA wich has a color sop inside of it, of wich Im using the group field, thats why I need to acces this field at the upper level (the HDA interface). So to to do this, when building the HDA interface I dragged that field directly from the color sop to the HDA interface, (pic1/3)but when I try to use it from the HDA it throws this error (pic2), wich I guess is referencing this code inside the group's script (pic4). I've never messed around with this kind of stuff, how can I solve this?
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Hi, I'm generating curves... I want with the "Group by range" select say the first point and offset it with $F, I have this done... for all curves doing the same.. But what if I want a random, in a way that offset of selection on every curve is different, I was trying to use primnum, but seems not to work... Do I need some "For Each"? And if so, how. Please and Thanks! Bretislav DontKnow.hip
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Hey OD Force, Decided to try and use Houdini 17 with HDM as my main hard surface modeler. Coming from a highly customized Maya set up. Is there a way to select an object, and run a "select similar" command. For components, it would select similar faces / edges / verts if the component had some type of symeterey (such as right vs left, top vs bottom,) For objects, it would select similar objects that have matching topology / bounding box volume. If more than 2 objects are select it woud select all objects in the scene by type such as poly objects, nurbs, etc I know at some point I would need to figure out a branching template for python commands, but to start, is there a select similar command?
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In Houdini 16.5 when I bring the mouse to the viewport, current tool automatically goes into the selection mode. This is normal?
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Is there any way to verify if some geometry components selected?
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In older versions of Houdini I could add a point to a group's selection. Has that changed in H16 because I can't seem to get it to happen? Any advice would be appreciated. Thank you David
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Hi, i wanted to use the Facet SOP on a certain selection of points. The node network looks like this: The group parameters are as follows and select four points. The Facet SOP parameter are as follows: Every option I select in the Facet SOP (e.g. Make Planar) effects all points and not only the selected points. Has anyone an idea why ? Thanks in advance
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Hey, I am trying to do some stuff in python with viewport selections. I want to query whether or not the user has anything selected, not necessarily get what is already selected. As far as I can tell the only way to do anything with the viewport is through toolutils. If I use "toolutils.sceneViewer().selectGeometry()" and nothing is selected, it waits until the user hits enter over the viewport before continuing. Is there any way to simply return whether or not any geometry has been selected without having to wait for the user to hit enter? import toolutils sv = toolutils.sceneViewer() geo = sv.selectGeometry() if geo: print "There is a selection" else: print "No geo selected" Thanks! James C
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Hi, a concrete slab ( box with size 3, 0.2, 1.5) after a voronoi fracture, I'm with prim groups: piece0 piece1 piece2 ... I'd like to select a few of them (pieces at the border of the slab) I know how to do it manually in the viewport / component groups / enable group selection or press 9 but how can I use this in a procedural way ? Like in a group node, with a bounding box ? It will only group the primitives, is there a way to extend the selection to connected geo ? must be possible..
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How do you guys select bones inside geometry? Seems like an impossible task short of using the Netview. Even though I'm in wire framemode, the geometry will still highlight and select. In Softimage there's an Xray display mode (which is different from Houdini's in concept) and bones, nulls, curves are drawn on top of renderable objects (Sub-D or NURBS surfaces) and are given priority over the geometry underneath when selecting. That's apart from being able to simply select through wireframe when in wireframe mode with Xray off. Now, I don't expect Houdini to have XSI's Xray mode, but at least a way of being able to select bones through geo at all.
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Hi, I'm trying to do an HDA that will have an input of a geometry, delete geo keep points... then a point blast based on a selection and then output it as obj sequence. well I want it to be an HDA so I need to make the selection in the digital asset upper level. The problem is when I drag the group selection to the parm interface it copies but then I select the little arrow and it says not enough inputs connected... do you have any idea how to connect them and be available to select in the top level? I'll send an example in attach. blast_selection.hda
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Hi Everyone! I have a grid, i'd like to select the diagonal points. Im using a group SOP, filter by expression: abs(TX) = abs(TZ); The result is funky (does not select all "TX=-TZ" diagonal but only corner pts) Any workarounds? Thank you very much!!! diagonal_select.hip
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Hi, I created a box as a Polygon Mesh in houdini 13. After giving it some axis divisions I want to select only some Verts or Faces. But I really cant select anything what makes sense. When I create a selection frame around the whole object to select all faces,verts or edges it only select some randome faces. Is there a hidden parameter which controls this? I din´t find a solution for that I compared it with the selection in houdini 14 and there everything is working as I would expect it to work. I would appreciate any help. Thank you. kind regards Jonathan
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Hi Everyone, I started learning Houdini a couple of weeks ago, and I love it so far! Basically I am trying to use the vopsop to simulate the behaviour of the "grow selection tool", without any luck unfortunately. So if I select the points nearest to the ground plane in the vopsop, I want to be able to grow this selection (with a slider or something) on the mesh. Not in any particular direction, just following the geometry, as the actual tool would. Any help/advice is much appreciated! Thanks, George
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Hello all, I am new to Houdini Fx, as to this forum. While spitting through all tutorials, i keep on running at a problem. Maybe its a small problem for you guys, but I cannot fix this. The problem is, that I cannot box select. For example, as I was doing a tutorial about animating in spring SOP's I had to select the points that weren't attached to the ground and make it a group. So I had it in front view, and dragged a box over the points, but nothing is selected. I tried various key combinations, like dragging with a shift or ctrl. But nothing seems to work. I than selected all by pressing a but I had to unselect the points manually with shift and clicking them one by one. Now the points are on a grid, so it was in the x and in the y direction, so that is a whole lotta work. I tried it with several projects but the box selection is not working. Can someone tell me what is wrong? Is there a different approach or am I just doing it wrong?
