animatrix
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OnCreated.py does not respond (external python file called when a node created)
animatrix replied to katosa's topic in Scripting
Hi Katosaori-san, You have to put OnCreated.py under your Houdini user folder: C:\Users\username\Documents\houdini18.0\scripts Something like: print kwargs["node"] -
Yes that happens when you copy paste code and even Sublime seems to mess up indents sometimes especially if you don't edit the code in Python syntax. But my idea was to model your network using the OpenCL force directed graph, solve it using the OpenCL SOP in the BG, and then copy the positions in animated form
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You can use this to layout your nodes in the network editor
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Retiming Ocean Spectra for Complex Ocean Shots | Worldwide HUG | Singapore
animatrix posted a topic in Education
When you have complex ocean spectra layered together using masks with varying speeds, and even animated timescales, retiming them while keeping the same approved look becomes a technical challenge. In this lesson you will see how to achieve this as a procedural post-retime operation, without having to modify any ocean spectra individually. -
Super cool Konstantin! I love seeing this kind of very unique and original ideas. Would be a great tutorial I can imagine a dozen uses just off top of my head!
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No, 1 will become (1,1,1). I just posted an example. He should be able to adapt it to his needs.
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I tried it before posting, it works fine. Can you post what error are you seeing? 1. {} is not needed in my code. Look here for similar C style syntax rules: http://www.cplusplus.com/forum/beginner/180452 2. You don't need to provide a vector type. VEX will automatically cast 0 into a vector.
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Hi, You can do it using a detail wrangle: int pts [ ] = array ( 1, 3, 4 ); foreach ( int pt; pts ) setpointattrib ( 0, "P", pt, 1 );
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Hi, This is a common feature request but it's not possible. Only think you can do is a hack where you create a for loop network with Iteration Method set to Count with 1 iteration. That way all the nodes inside would only execute once, just like having no loop. The downside is it might confuse other people.
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Subdivision surfaces are piecewise parametric surfaces defined over meshes of arbitrary topology. It's an algorithm that maps from a surface to another more refined surface, where the surface is described as a set of points and a set of polygons with vertices at those points. The resulting surface will always consist of a mesh of quadrilaterals.
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Hi Saori-san, You need to access the geometry on your hou.Node instance. For example: hou.node("/obj/GEO_model/null1").geometry().attribValue("name")
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We have already seen how to apply gradient ascent, descent and contour lines to heightfield like planar geometry. The same concept can be applied to heightfields. Because heightfields are volumes, getting the gradient is very easy by using the volumegradient function. The normal of a heightfield is (0, 1, 0) if the heightfield is an XZ volume, meaning facing up. Getting the cross product of both of these vectors will give you the contour lines.
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how to change HDA node color?
animatrix replied to Linguininess's topic in General Houdini Questions
Hi, You can put this code in Scripts > Python Module: def setNodeColor(kwargs): this = kwargs['node'] color = hou.Color(1, 0, 0) readmode = this.evalParm('readmode') if readmode == 1: color = hou.Color(1, 0.8, 0) elif readmode > 0: color = hou.Color(0.6, 1, 0.2) this.setColor(color) Then call it in the parameter's Callback Script parameter like this: hou.phm().setNodeColor(kwargs) -
How to change number of inputs/outputs on a subnet?
animatrix replied to kvaletet's topic in General Houdini Questions
Hi, I don't think that's possible. -
Now that we know about gradients, there is another concept that's related to them that can be acquired quite easily, and that concept is contour lines. A contour line (also isoline) of a function of two variables is a curve along which the function has a constant value, so that the curve joins points of equal value. There are very interesting relationships between the gradients and the contour lines.
