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Showing results for tags 'object'.
Normal Map for Mantra Surface Shader
garretthoyos posted a topic in ShadersI don't know why, but I've never successfully been able to import a normal map into houdini from zbrush or mudbox. I've had this issue for a year now, and I always just do bump instead. It works, but I'd rather have a tangent space normal map. Both tangent space and object space appear to screw up the lighting in Houdini renders. I'm using the mantra surface shader, default with houdini 13. Anyone know how to get this to work without the harsh edges on the shadows? Image 1 shows how the object looks with a normal map plugged in Image 2 shows how the object looks with "normal" selected from the drop down menu without the map being checked on. Image 3 shows how it looks without the normal option being selected from the drop down menu, just regular obj, no maps. Image 4 shows what I mean by "drop down menu" This is not the problem with the obj or the maps. They work fine in maya. Something weird is happening in Houdini. Thanks!!!
Delete DOP object with pythonHi, How can I delete DOP object with python? I couldn't find delete method in hou.DopObject yet. Thank you,
Rendering properties at object level
Sifis posted a topic in Lighting & RenderingHi, I know that we can add rendering properties in several levels of houdini as in primitives, objects, cameras and output drivers. The thing I've noticed though, is that some rendering properties work well at object or primitive level and some don't. For example, when I tried to add "opacity limit" to two objects and set different values, it didn't override the opacity limit setting of the output driver. In another case though, when I added reflection limit in object level, it worked as it should which lead me to the conclusion that some rendering properties work well in object level and some are uniform. This makes sense for some properties but I don't see the reason why "opacity limit" shouldn't work at object level. Is this as it suppose to work or am I doing something completely wrong? Any advise could help.
how fracture object calculates mass
substep posted a topic in General Houdini QuestionsHi. I have a question about how mass is calculated for a RBD fracture dop. when using bullet, is the mass being calculated for the actual volume of the object itself, or for the collision geo (convex hull) that represents it? I do notice sometimes, that on some smaller pieces, the collision geometry is almost half as big as the object it represents. I think this is fixed by decreasing the padding. but still, which one is it calculating the mass from? thanks!
RBD Point Object + FracturingHi everyone. Long time lurker, first time poster here I'm going to have a sim with 100s of identical objects that are all stacked on top of one another and will need to be fractured. For this, I'm assuming that the best thing for me to use is the "RBD Point Object" tool on the shelf. Works great and allows me to do things like choose when my objects become active. Great. BUT. I can't find a way to get these RBD objects to fracture and then simulate. Is there something I'm doing wrong? I've instead opted to go down the route of having a regular RBD object, and increasing the "Number of Objects" parameter. I can then set the initial state with the $OBJ variable to be what I need. However, using this method, I can't find a way to activate the RBDs when I'd like. If someone could give me some pointers, I'd love them forever. I've attached my basic RBD Point Object scene. Thanks, Sid jw_breakingGlasses_v02_instancedRBDs.hip
How to contraint each fractured object to its pivot?Hi Guys, I need to constraint each fractured objects to its pivot, I read on a old topic that is possible with the apply relationships node+pin constraint, but i'm having some troubles... The other method changing the state of the objects works but if I add a glue network it doesn't work anymore cuz there are 2 overrides I think. Using this expression in the constrained location inside the pin constraint works but of course it not gets the pivot of each fractured piece. dopoption(".",$OBJID,"Position","px") [/CODE] Thanks in advance. Eduard