| SideFX

Fix copy stamp N and up rotations 5 years

Pablo Giménez

Hi all. When using copy stamp, if you provide a N and up attributes the operator calculates the rotations using that coordiante system as a reference. I am having some troubles with some geometry that at some point just jumps, it orientation flickers. I have tought that probably the problem is that the copy operator is doing an euler rotation rather than using quaternions. Not sure if somebody else have had the same problem before, but any advice about waht is the best/easy way to get the same rotations but usign quaternions would be gret. Thanks! -- Un saludo Best Regards Pablo Gim?nez

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5 participants
10 comments

Space filling circles 7 years, 2 months

Andrew Lyons

Looks like someone found an artistic use for this: http://www.dj-tronic.com/dancefloormayhem.com/images/2009/TCM_albumcover.jpg I wonder who the mystery artist was. Anyone know who? Cheers On 6 August 2009 09:26, Andrew D Lyons <tstexture at gmail.com> wrote: > Yep - sorry about the line wrapping on that post. There is a more > succinct version of the script uploaded to here: > > http://www.sidefx.com/index.php?option=com_forum&Itemid=172&page=viewtopi... > > Cheers > > > 2009/8/6 David Johnson <daveinengland at gmail.com>: >> I had to edit the example to fix the line wraps that the email put in, but >> after that it ran just fine. Maybe someone could put it on odforce or in the >> SideFX forum. >> >> Dave >> >> On Thu, Aug 6, 2009 at 6:58 AM, Steve Tucker <Steve.Tucker at starz.com> wrote: >> >>> Interesting. ?If I attempt to run this in a new file, it doesn't work. >>> ?Can't create the geo object. ?If I cd /obj and then try running it, I get a >>> fatal exception error. >>> >>> ?- Steve >>> >>> Stephen Tucker, VFX Artist >>> p: 416.682.5200 x 5363 ?| f: 416.682.5209 >>> Starz Media Canada Co. | 230 Richmond Street East | Toronto, ON M5A 1P4 >>> www.starzanimation.com >>> >>> >>> -----Original Message----- >>> From: sidefx-houdini-list-bounces at sidefx.com [mailto: >>> sidefx-houdini-list-bounces at sidefx.com] On Behalf Of Andrew D Lyons >>> Sent: Wednesday, August 05, 2009 7:07 PM >>> To: sidefx-houdini-list at sidefx.com >>> Subject: Re: [Sidefx-houdini-list] Space filling circles >>> >>> That's an interesting problem. Not exactly circular - but close: >>> >>> Drop this in a textport: >>> ####################################################### >>> >>> # Automatically generated script: Wednesday August 05, 16:06 >>> \set noalias = 1 >>> set saved_path = `execute("oppwf")` >>> opcf /obj >>> >>> # Node circle_cells (Object/geo) >>> opadd -n geo circle_cells >>> oplocate -x 12.6117 -y 2.05949 circle_cells >>> opspareds ' ? ?group { ?name ? ?"stdswitcher5" ?label ? "Transform" >>> parm >>> { ? ? ? ? ? name ? ? ? ?"keeppos" ? ? ? ? ? baseparm ? ? ? ?joinnext >>> ?export ? ? ?none ? ?} >>> ? ? ? ?parm { ? ? ?name ? ? ? ?"pre_xform" ? ? ? ? baseparm ? ? ? ?export >>> ? ?none ? ?} ? ? ? parm >>> { ? ? ? ? ? name ? ? ? ?"xOrd" ? ? ?baseparm ? ? ? ?joinnext ? ? ? ?export >>> ? ? ?none ? ?} >>> ? ? ? ?parm { ? ? ?name ? ? ? ?"rOrd" ? ? ?baseparm ? ? ? ?export ? ? ?none >>> ? ?} ? ? ? parm { >>> ?name ? "t" ? ? ? ? baseparm ? ? ? ?export ? ? ?all ? ? } ? ? ? parm { >>> ?name ? ? ? ?"r" >>> baseparm ? ? ? ? ? ?export ? ? ?all ? ? } ? ? ? parm { ? ? ?name ? ? ? ?"s" >>> ? ? ? ? baseparm >>> export ?none ? ?} ? ? ? parm { ? ? ?name ? ? ? ?"p" ? ? ? ? baseparm >>> ?export ? ? ?none ? ?} >>> ? ? ? ?parm { ? ? ?name ? ? ? ?"scale" ? ? ? ? ? ? baseparm ? ? ? ?export >>> ? ?none ? ?} ? ? ? parm { >>> ?name ?"lookatpath" ? ? ? ?baseparm ? ? ? ?export ? ? ?none ? ?} ? ? ? parm >>> { >>> name ? ?"lookup" ? ? ? ? ? ?baseparm ? ? ? ?export ? ? ?none ? ?} >>> parm { >>> name ? ?"pathobjpath" ? ? ? baseparm ? ? ? ?export ? ? ?none ? ?} >>> parm { >>> name ? ?"roll" ? ? ?baseparm ? ? ? ?export ? ? ?none ? ?} ? ? ? parm { >>> ?name ? ? ? ?"pos" >>> ? ? ? ? ? ?baseparm ? ? ? ?export ? ? ?none ? ?} ? ? ? parm { ? ? ?name >>> ? ?"uparmtype" >>> baseparm ? ? ? ? ? ?export ? ? ?none ? ?} ? ? ? parm { ? ? ?name >>> ?"pathorient" >>> baseparm ? ? ? ? ? ?export ? ? ?none ? ?} ? ? ? parm { ? ? ?name >>> ?"up" ? ? ? ?baseparm >>> export ?none ? ?} ? ? ? parm { ? ? ?name ? ? ? ?"bank" ? ? ?baseparm >>> ?export ? ? ?none >>> ? ? ? ?} ? ? } ? ? ?group { ? ?name ? ?"stdswitcher5_1" ? ? ? ?label >>> "Material" ? ? ?parm >>> { ? ? ? ? ? name ? ? ? ?"shop_materialpath" ? ? ? ? baseparm >>> ?joinnext >>> export ?none ? ?} ? ? ? parm { ? ? ?name ? ? ? ?"shop_materialopts" >>> baseparm >>> ?export none ? ?} ? ? } ? ? ?group { ? ?name ? ?"stdswitcher5_2" >>> ? ? ? ?label ? "Render" ? ? ? ?parm { ? ? ?name ? ? ? ?"tdisplay" >>> ?baseparm >>> export ?none ? ?} ? ? ? parm { ? ? ?name ? ? ? ?"display" >>> baseparm >>> export ?none ? ?} ? ? ? parm { ? ? ?name ? ? ? ?"vm_phantom" ? ? ? ?label >>> ? ? "Phantom" >>> ?type ? toggle ? ? ?default ? ? { "0" } ? ? ? ? ? ? range ? ? ? { 0 1 } >>> ? ? ? ? export ? ? ?none >>> ? ? ? ? ? ?parmtag ? ? { "spare_category" "Render" } ? } ? ? ? parm { >>> name ? ?"vm_renderable" ? ? ? ? ? ? label ? ? ? "Renderable" ? ? ? ?type >>> ? ? ?toggle >>> default { "1" } ? ? ? ? ? ? range ? ? ? { 0 1 } ? ? ? ? ? ? export >>> ?none ? ? ? ?parmtag ? ? { >>> "spare_category" "Render" } ? ? } ? ? ? group { ? ? ? ? ? ? name >>> ?"folder0" >>> label ? "Shading" ? ? ? ? ? parm { ? ? ? ? ? ? ?name ? ?"categories" >>> ? ? ?label ? "Categories" >>> ? ? ? ? ? ? ? ?type ? ?string ? ? ? ? ?default { "" } ? ? ? ? ?help ? ?"A >>> list of tags which can be >>> used to select the object" ? ? ? ? ? ? ?range ? { 0 1 } >>> export ?none ? ? ? ? ? ?parmtag { >>> "spare_category" "Shading" } ? ? ? ?} ? ? ? parm { ? ? ? ? ? ? ?name >>> ?"reflectmask" >>> ? ? ? ? ? ? ? ?label ? "Reflection Mask" ? ? ? ? ? ? ? type ? ?oplist >>> ? ?default { "*" } ? ? ? ? ? ? ? ? range ? { 0 >>> 1 } ? ? ? ? ? ? export ?none ? ? ? ? ? ?parmtag { "oprelative" "/obj" } >>> ? ? ? ? ? ? parmtag { >>> "opfilter" "!!OBJ/GEOMETRY!!" } ? ? ? ? ? ? ? ? parmtag { "spare_category" >>> "Shading" >>> } ? ? ? ? ? ? ? parmtag { "opexpand" "1" } ? ? ? ? ?} ? ? ? parm { >>> ? ? ?name ? ?"lightmask" >>> ? ? ? ? ? ? ? ?label ? "Light Mask" ? ? ? ? ? ?type ? ?oplist >>> ?default { "*" } ? ? ? ? ? ? ? ? range ? { 0 1 } >>> ? ? ? ? ? ? ? ?export ?none ? ? ? ? ? ?parmtag { "oprelative" "/obj" } >>> ? ? ? ? ? ? parmtag { "opfilter" >>> "!!OBJ/LIGHT!!" } ? ? ? ? ? ? ? parmtag { "spare_category" "Shading" } >>> ? ? ?parmtag { >>> "opexpand" "1" } ? ? ? ? ? ?} ? ? ? parm { ? ? ? ? ? ? ?name >>> ?"vm_volumefilter" >>> ? ? ? ? ? ? ? ?label ? "Volume Filter" ? ? ? ? ? ? ? ? type ? ?string >>> ? ?default { "gaussian" } >>> ? ? ? ? ? ? ? ?menu ? ?{ ? ? ? ? ? ? ? ? ? "box" ? ? ? "Box Filter" >>> ? ? ? ?"gaussian" ?"Gaussian" >>> "bartlett" ? ? ?"Bartlett (triangle)" ? ? ? ? ? ? ? "catrom" >>> ?"Catmull-Rom" >>> "hanning" ? ? ? "Hanning" ? ? ? ? ? ? ? ? ? "blackman" ?"Blackman" >>> ? ? ? ? ?"sinc" ? ? ?"Sinc >>> (sharpening)" ? ? ? ? ? } ? ? ? ? ? ? ? range ? { 0 1 } >>> export ?none ? ? ? ? ? ?parmtag { >>> "spare_category" "Shading" } ? ? ? ?} ? ? ? parm { >>> ? ? ? ? ? ? ? ?name ? ?"vm_volumefilterwidth" ? ? ? ? ?label ? "Volume >>> Filter Width" >>> ? ? ? ? ? ? ? ?type ? ?float ? ? ? ? ? default { "1.5" } >>> range ? { 0.001 5 } ? ? ? ? ? ? export ?none >>> ? ? ? ? ? ? ? ?parmtag { "spare_category" "Shading" } ? ? ?} ? ? ? parm { >>> ? ? ? ? ? ? ? ?name ? ?"vm_matte" ? ? ? ? ? ? ?label ? "Matte shading" >>> ? ? ? ? ? ? type ? ?toggle ? ? ? ? ?default { >>> "0" } ? ? ? ? ? range ? { 0 1 } ? ? ? ? ? ? ? ? export ?none >>> ?parmtag { "spare_category" >>> "Shading" } ? ? ? ? } ? } ? ? ? group { ? ? ? ? ? ? name ? ? ? ?"folder0_1" >>> label ? "Sampling" ? ? ? ? ?parm { ? ? ? ? ? ? ?name ? ?"geo_velocityblur" >>> ? ? ? ? ? ? ? ?label ? "Geometry Velocity Blur" ? ? ? ? ? ? ? ?type >>> ?toggle ? ? ? ? ?default { "0" } >>> ? ? ? ? ? ? ? ?range ? { 0 1 } ? ? ? ? ? ? ? ? export ?none >>> ?parmtag { "spare_category" "Sampling" >>> } ? ? ? ? ? } ? } ? ? ? group { ? ? ? ? ? ? name ? ? ? ?"folder0_2" >>> label ? ? ? "Dicing" >>> parm { ? ? ? ? ?name ? ?"vm_shadingquality" ? ? ? ? ? ? label ? "Shading >>> Quality" >>> ? ? ? ? ? ? ? ?type ? ?float ? ? ? ? ? default { "1" } >>> range ? { 0 10 } ? ? ? ? ? ? ? ?export ?none >>> ? ? ? ? ? ? ? ?parmtag { "spare_category" "Dicing" } ? ? ? } ? ? ? parm { >>> ? ? ? ? ? ? ? ?name ? ?"vm_rayshadingquality" ? ? ? ? ?label ? "Ray Shading >>> Quality" >>> ? ? ? ? ? ? ? ?type ? ?float ? ? ? ? ? default { "1" } >>> range ? { 0 10 } ? ? ? ? ? ? ? ?export ?none >>> ? ? ? ? ? ? ? ?parmtag { "spare_category" "Dicing" } ? ? ? } ? } >>> group { >>> name ? ?"folder0_3" ? ? ? ? label ? ? ? "Geometry" ? ? ? ? ?parm { >>> ? ? ? ? ? ? ? ?name ? ?"vm_rmbackface" ? ? ? ? ? ? ? ? label ? "Backface >>> Removal (Mantra)" >>> ? ? ? ? ? ? ? ?type ? ?toggle ? ? ? ? ?default { "0" } >>> range ? { 0 1 } ? ? ? ? ? ? ? ? export ?none >>> ? ? ? ? ? ? ? ?parmtag { "spare_category" "Geometry" } ? ? ? ? ? ? } >>> parm { >>> ? ? ? ? ? ? ? ?name ? ?"shop_geometrypath" ? ? ? ? ? ? label ? "Procedural >>> Shader" ? ? ? ? ? ? type ? ?oppath >>> ? ? ? ? ? ? ? ?default { "" } ? ? ? ? ?range ? { 0 1 } >>> export ?none ? ? ? ? ? ?parmtag { >>> "oprelative" "." } ? ? ? ? ? ? ?parmtag { "opfilter" "!!SHOP/GEOMETRY!!" } >>> ? ? ? ? ? ? ? ?parmtag { "spare_category" "Geometry" } ? ? ? ? ? ? } >>> parm { >>> ? ? ? ? ? ? ? ?name ? ?"vm_rendersubd" ? ? ? ? ? ? ? ? label ? "Polygons As >>> Subdivision (Mantra)" >>> ? ? ? ? ? ? ? ?type ? ?toggle ? ? ? ? ?default { "0" } >>> range ? { 0 1 } ? ? ? ? ? ? ? ? export ?none >>> ? ? ? ? ? ? ? ?parmtag { "spare_category" "Geometry" } ? ? ? ? ? ? } >>> parm { >>> ? ? ? ? ? ? ? ?name ? ?"vm_renderpoints" ? ? ? ? ? ? ? label ? "Render As >>> Points (Mantra)" >>> ? ? ? ? ? ? ? ?type ? ?toggle ? ? ? ? ?default { "0" } >>> range ? { 0 1 } ? ? ? ? ? ? ? ? export ?none >>> ? ? ? ? ? ? ? ?parmtag { "spare_category" "Geometry" } ? ? ? ? ? ? } >>> parm { >>> ? ? ? ? ? ? ? ?name ? ?"vm_metavolume" ? ? ? ? ? ? ? ? label ? "Metaballs >>> as Volume" ? ? ? ? ? type ? ?toggle >>> ? ? ? ? ? ? ? ?default { "0" } ? ? ? ? ? ? ? ? range ? { 0 1 } >>> ? ? export ?none ? ? ? ? ? ?parmtag { >>> "spare_category" "Geometry" } ? ? ? } ? ? ? parm { ? ? ? ? ? ? ?name >>> ?"vm_coving" >>> ? ? ? ? ? ? ? ?label ? "Coving" ? ? ? ? ? ? ? ?type ? ?integer >>> ? ? default { "1" } ? ? ? ? ? ? ? ? menu ? ?{ >>> "0" ? ? "Disable Coving" ? ? ? ? ? ? ? ? ? ?"1" "Coving for >>> displacement/sub-d" >>> "2" ? ? "Coving for all primitives" ? ? ? ? ? ? } ? ? ? ? ? ? ? range ? { 0 >>> 10 } ? ? ? ? ? ? ? ?export ?none >>> ? ? ? ? ? ? ? ?parmtag { "spare_category" "Geometry" } ? ? ? ? ? ? } >>> parm { >>> ? ? ? ? ? ? ? ?name ? ?"vm_computeN" ? ? ? ? ? label ? "Automatically >>> Compute Normals" >>> ? ? ? ? ? ? ? ?type ? ?toggle ? ? ? ? ?default { "1" } >>> range ? { 0 1 } ? ? ? ? ? ? ? ? export ?none >>> ? ? ? ? ? ? ? ?parmtag { "spare_category" "Geometry" } ? ? ? ? ? ? } ? } >>> ? ?} ? ? ?group >>> { ? ? ? name ? ?"stdswitcher5_3" ? ? ? ?label ? "Misc" ? ? ? ? ?parm { >>> ?name ? ? ? ?"use_dcolor" >>> ? ? ? ? ? ?baseparm ? ? ? ?export ? ? ?none ? ?} ? ? ? parm { ? ? ?name >>> ? ?"dcolor" >>> baseparm ? ? ? ? ? ?export ? ? ?none ? ?} ? ? ? parm { ? ? ?name >>> ?"picking" ? ? ? ? ? baseparm >>> ? ? ? ? ? ?export ? ? ?none ? ?} ? ? ? parm { ? ? ?name ? ? ? ?"pickscript" >>> ? ? ? ?baseparm >>> export ?none ? ?} ? ? ? parm { ? ? ?name ? ? ? ?"caching" >>> baseparm >>> export ?none ? ?} ? ? ? parm { ? ? ?name ? ? ? ?"vport_shadeopen" >>> baseparm >>> export ?none ? ?} ? ? ? parm { ? ? ?name ? ? ? ?"vport_displayassubdiv" >>> ? ? ? ? baseparm >>> ? ? ? ? ? ?invisible ? ? ? export ? ? ?none ? ?} ? ? } ?' circle_cells >>> opset -S on circle_cells >>> opparm circle_cells use_dcolor ( off ) >>> chautoscope circle_cells +tx +ty +tz +rx +ry +rz +sx +sy +sz >>> opset -d on -r off -h off -f off -y off -t off -l off -s off -u off -c >>> off -e on -b off -x off circle_cells >>> opexprlanguage -s hscript circle_cells >>> opcf circle_cells >>> >>> # Node circle1 (Sop/circle) >>> opadd -n circle circle1 >>> oplocate -x 3.41176 -y 0.0882355 circle1 >>> opparm circle1 type ( poly ) orient ( zx ) rad ( 21 21 ) divs ( 100 ) >>> opset -d off -r off -h off -f off -y off -t off -l off -s off -u off >>> -c off -e on -b off circle1 >>> opexprlanguage -s hscript circle1 >>> >>> # Node triangulate2d1 (Sop/triangulate2d) >>> opadd -n triangulate2d triangulate2d1 >>> oplocate -x 3.41176 -y -1.15882 triangulate2d1 >>> opparm triangulate2d1 refine ( on ) maxarea ( 2 ) minangle ( 30 ) >>> maxnewpts ( 19565 ) removeduplicatepoints ( off ) >>> opset -d off -r off -h off -f off -y off -t off -l off -s off -u off >>> -c off -e on -b off triangulate2d1 >>> opexprlanguage -s hscript triangulate2d1 >>> >>> # Node facet1 (Sop/facet) >>> opadd -n facet facet1 >>> oplocate -x 3.50951 -y -3.19412 facet1 >>> opparm facet1 unique ( on ) >>> opset -d off -r off -h off -f off -y off -t off -l off -s off -u off >>> -c off -e on -b off facet1 >>> opexprlanguage -s hscript facet1 >>> >>> # Node foreach1 (Sop/foreach) >>> opadd -n foreach foreach1 >>> oplocate -x 3.41176 -y -5.02471 foreach1 >>> chblockbegin >>> chadd -t 0 0 foreach1 numrange2 >>> chkey -t 0 -v 10 -m 0 -a 0 -A 0 -T a ?-F 'nprims("../" + opinput(".", >>> 0))-1' foreach1/numrange2 >>> chblockend >>> opparm foreach1 fortype ( number ) numrange ( 0 numrange2 1 ) >>> opset -d on -r on -h off -f off -y off -t off -l off -s off -u off -c >>> off -e on -b off foreach1 >>> opexprlanguage -s hscript foreach1 >>> opcf foreach1 >>> >>> # Node each1 (Sop/each) >>> opadd -n each each1 >>> oplocate -x 0.6102 -y 4.8513 each1 >>> chblockbegin >>> chadd -t 0 0 each1 attribtol >>> chkey -t 0 -v 0.001 -m 0 -a 0 -A 0 -T a ?-F 'ch("../attribtol")' >>> each1/attribtol >>> chadd -t 0 0 each1 attribval1 >>> chkey -t 0 -v 0 -m 0 -a 0 -A 0 -T a ?-F 'stamp("..", >>> chs("../forstamp") + "1", 0)' each1/attribval1 >>> chadd -t 0 0 each1 attribval2 >>> chkey -t 0 -v 0 -m 0 -a 0 -A 0 -T a ?-F 'stamp("..", >>> chs("../forstamp") + "2", 0)' each1/attribval2 >>> chadd -t 0 0 each1 attribval3 >>> chkey -t 0 -v 0 -m 0 -a 0 -A 0 -T a ?-F 'stamp("..", >>> chs("../forstamp") + "3", 0)' each1/attribval3 >>> chadd -t 0 0 each1 attrib >>> chkey -t 0 -v 0 -m 0 -a 0 -A 0 -T a ?-F >>> 'ifs(!!strcmp(chs("../fortype"), "attrib"), "", chs("../attrib"))' >>> each1/attrib >>> chadd -t 0 0 each1 group >>> chkey -t 0 -v 0 -m 0 -a 0 -A 0 -T a ?-F >>> 'ifs(!!strcmp(chs("../fortype"), "group"), "", stamps("..", >>> chs("../forstamp"), ""))' each1/group >>> chadd -t 0 0 each1 feedback >>> chkey -t 0 -v 0 -m 0 -a 0 -A 0 -T a ?-F '!ch("../mergeresults")' >>> each1/feedback >>> chblockend >>> opparm each1 feedback ( feedback ) group ( group ) attrib ( attrib ) >>> attribval ( attribval1 attribval2 attribval3 ) attribtol ( attribtol ) >>> forpath ( .. ) >>> opset -d off -r off -h off -f off -y off -t off -l off -s off -u off >>> -c off -e on -b off each1 >>> opexprlanguage -s hscript each1 >>> >>> # Node delete2 (Sop/delete) >>> opadd -n delete delete2 >>> oplocate -x 0.6102 -y 3.89295 delete2 >>> chblockbegin >>> chadd -t 0 0 delete2 rangeend >>> chkey -t 0 -v 0 -m 0 -a 0 -A 0 -T a ?-F '$N' delete2/rangeend >>> chadd -t 0 0 delete2 filter >>> chkey -t 0 -v 1 -m 0 -a 0 -A 0 -T a ?-F 'stamp("../", "FORVALUE", 0) >>> == prim("../" + opinput(".", 0), $PR, "__primnum", 0)' delete2/filter >>> chblockend >>> opparm delete2 negate ( keep ) groupop ( filter ) filter ( filter ) >>> pattern ( "" ) >>> opset -d off -r off -h off -f off -y off -t off -l off -s off -u off >>> -c off -e on -b off delete2 >>> opexprlanguage -s hscript delete2 >>> >>> # Node fit1 (Sop/fit) >>> opadd -n fit fit1 >>> oplocate -x 0.610753 -y 0.946953 fit1 >>> opparm fit1 stdswitcher ( 2 2 2 ) method ( interp ) orderu ( 3 ) >>> orderv ( 3 ) smooth ( 0.343 ) scope ( breakpnt ) dataparmv ( uniform ) >>> closeu ( wu ) closev ( wv ) corners ( on ) >>> opset -d on -r on -h off -f off -y off -t off -l off -s off -u off -c >>> off -e on -b off fit1 >>> opexprlanguage -s hscript fit1 >>> >>> # Node circle1 (Sop/circle) >>> opadd -n circle circle1 >>> oplocate -x 3.01075 -y 3.7 circle1 >>> opset -d off -r off -h off -f off -y off -t off -l off -s off -u off >>> -c off -e on -b off circle1 >>> opexprlanguage -s hscript circle1 >>> >>> # Node resample1 (Sop/resample) >>> opadd -n resample resample1 >>> oplocate -x 0.622517 -y 2.92353 resample1 >>> opparm resample1 edge ( on ) dolength ( off ) dosegs ( on ) segs ( 2 ) >>> opset -d off -r off -h off -f off -y off -t off -l off -s off -u off >>> -c off -e on -b off resample1 >>> opexprlanguage -s hscript resample1 >>> >>> # Node delete1 (Sop/delete) >>> opadd -n delete delete1 >>> oplocate -x 0.610753 -y 1.85283 delete1 >>> chblockbegin >>> chadd -t 0 0 delete1 rangeend >>> chkey -t 0 -v 0 -m 0 -a 0 -A 0 -T a ?-F '$N' delete1/rangeend >>> chblockend >>> opparm delete1 entity ( point ) groupop ( range ) range ( -1 rangeend ) >>> opset -d off -r off -h off -f off -y off -t on -l off -s off -u off -c >>> off -e on -b off delete1 >>> opexprlanguage -s hscript delete1 >>> oporder -e each1 delete2 fit1 circle1 resample1 delete1 >>> opcf .. >>> >>> # Node __PRIMNUM (Sop/attribcreate) >>> opadd -n attribcreate __PRIMNUM >>> oplocate -x 3.41176 -y -4.07765 __PRIMNUM >>> chblockbegin >>> chadd -t 0 0 __PRIMNUM value1 >>> chkey -t 0 -v 0 -m 0 -a 0 -A 0 -T a ?-F '$PR' __PRIMNUM/value1 >>> chblockend >>> opparm __PRIMNUM name ( __primnum ) varname ( __PRIMNUM ) class ( >>> primitive ) value ( value1 0 0 0 ) >>> opset -d off -r off -h off -f off -y off -t off -l off -s off -u off >>> -c off -e on -b off __PRIMNUM >>> opexprlanguage -s hscript __PRIMNUM >>> >>> # Node foreach2 (Sop/foreach) >>> opadd -n foreach foreach2 >>> oplocate -x 3.50951 -y -2.29415 foreach2 >>> opparm foreach2 fortype ( number ) numrange ( 0 4 1 ) mergeresults ( off ) >>> opset -d off -r off -h off -f off -y off -t off -l off -s off -u off >>> -c off -e on -b off foreach2 >>> opexprlanguage -s hscript foreach2 >>> opcf foreach2 >>> >>> # Node each1 (Sop/each) >>> opadd -n each each1 >>> oplocate -x 0.6102 -y 4.8513 each1 >>> chblockbegin >>> chadd -t 0 0 each1 attribtol >>> chkey -t 0 -v 0.001 -m 0 -a 0 -A 0 -T a ?-F 'ch("../attribtol")' >>> each1/attribtol >>> chadd -t 0 0 each1 attribval1 >>> chkey -t 0 -v 0 -m 0 -a 0 -A 0 -T a ?-F 'stamp("..", >>> chs("../forstamp") + "1", 0)' each1/attribval1 >>> chadd -t 0 0 each1 attribval2 >>> chkey -t 0 -v 0 -m 0 -a 0 -A 0 -T a ?-F 'stamp("..", >>> chs("../forstamp") + "2", 0)' each1/attribval2 >>> chadd -t 0 0 each1 attribval3 >>> chkey -t 0 -v 0 -m 0 -a 0 -A 0 -T a ?-F 'stamp("..", >>> chs("../forstamp") + "3", 0)' each1/attribval3 >>> chadd -t 0 0 each1 attrib >>> chkey -t 0 -v 0 -m 0 -a 0 -A 0 -T a ?-F >>> 'ifs(!!strcmp(chs("../fortype"), "attrib"), "", chs("../attrib"))' >>> each1/attrib >>> chadd -t 0 0 each1 group >>> chkey -t 0 -v 0 -m 0 -a 0 -A 0 -T a ?-F >>> 'ifs(!!strcmp(chs("../fortype"), "group"), "", stamps("..", >>> chs("../forstamp"), ""))' each1/group >>> chadd -t 0 0 each1 feedback >>> chkey -t 0 -v 0 -m 0 -a 0 -A 0 -T a ?-F '!ch("../mergeresults")' >>> each1/feedback >>> chblockend >>> opparm each1 feedback ( feedback ) group ( group ) attrib ( attrib ) >>> attribval ( attribval1 attribval2 attribval3 ) attribtol ( attribtol ) >>> forpath ( .. ) >>> opset -d off -r off -h off -f off -y off -t off -l off -s off -u off >>> -c off -e on -b off each1 >>> opexprlanguage -s hscript each1 >>> >>> # Node divide2 (Sop/divide) >>> opadd -n divide divide2 >>> oplocate -x 0.6102 -y 3.42343 divide2 >>> opparm divide2 convex ( off ) dual ( on ) >>> opset -d on -r on -h off -f off -y off -t off -l off -s off -u off -c >>> off -e on -b off divide2 >>> opexprlanguage -s hscript divide2 >>> oporder -e each1 divide2 >>> opcf .. >>> oporder -e circle1 triangulate2d1 facet1 foreach1 __PRIMNUM foreach2 >>> opcf .. >>> >>> opcf /obj >>> opcf circle_cells >>> opwire -n circle1 -0 triangulate2d1 >>> opwire -n foreach2 -0 facet1 >>> opwire -n __PRIMNUM -0 foreach1 >>> opcf foreach1 >>> opwire -n -i 0 -0 each1 >>> opwire -n each1 -0 delete2 >>> opwire -n delete1 -0 fit1 >>> opwire -n delete2 -0 resample1 >>> opwire -n resample1 -0 delete1 >>> opcf .. >>> opwire -n facet1 -0 __PRIMNUM >>> opwire -n triangulate2d1 -0 foreach2 >>> opcf foreach2 >>> opwire -n -i 0 -0 each1 >>> opwire -n each1 -0 divide2 >>> opcf .. >>> opcf .. >>> opcf $saved_path >>> >>> ###################################################### >>> >>> 2009/8/5 Doug Struthers <dragonfly at dougstruthers.com>: >>> > Thanks for your inputs. >>> > >>> > Since there do not need to be thousands of them I bet I can iterate on >>> them >>> > to get a close approximation without taking a long long time to compute. >>> > >>> > It is intriguing to think that there may be a function with dops that the >>> > solution falls out of but I am still a way down the learning curve with >>> all >>> > the functionality that exists in vops let alone rolling my own. >>> > >>> > Cheers >>> > >>> > Doug >>> > >>> > On Wed, Aug 5, 2009 at 9:09 AM, Gene Dreitser <keyframe at rogers.com> >>> wrote: >>> > >>> >> >>> >> Might also be worth it to take a look at the output of the isooffset sop >>> >> using the 'tetra-mesh' output type. ?Tetra-type set to 'cubes'. >>> >> >>> >> While it will not pack perfectly, it DOES create a predictable pattern >>> of >>> >> rows and columns that one might be able to make use, and as an added >>> bonus, >>> >> it can use ray-intersect to sample the original mesh. >>> >> >>> >> Best, >>> >> >>> >> G >>> >> >>> >> ?-- >>> >> Gene Dreitser >>> >> Loki Visual Effects >>> >> p: 416.532.5654 // c: 416.803.0682 // www.lokivfx.com >>> >> >>> >> >>> >> >>> >> ----- Original Message ---- >>> >> From: Andy Nicholas <andy at andynicholas.com> >>> >> To: sidefx-houdini-list at sidefx.com >>> >> Sent: Wednesday, August 5, 2009 12:05:13 PM >>> >> Subject: Re: [Sidefx-houdini-list] Space filling circles >>> >> >>> >> Hi Doug, >>> >> Are you asking this because you know of this being done somewhere else? >>> I >>> >> only ask because I just Googled this (out of my own interest), and >>> judging >>> >> on how many papers are written on this topic, I'd say that it's a >>> >> non-trivial problem to solve. >>> >> >>> >> The only thing that springs to mind, would be to create an iterative >>> >> approach, using the SOP solver or the Feedback SOP (proto_install). >>> >> >>> >> Note that I haven't tested this, or fully thought it through, but the >>> >> following... might... just... ?work... >>> >> >>> >> Start off with a triangular polygon with a random sized disc at each >>> >> vertex so that their circumferences touch. From that, take a pair of >>> discs >>> >> and create another randomly sized one and place it (using simple >>> >> trigonometry) so that it touches the first two. Extend the triangle into >>> a >>> >> four sided polygon with the new point at the center of the new disc. >>> >> Repeat the process, but ignoring any discs internal to the polygon. >>> >> >>> >> I can see this approach breaking down if you ever have a non-convex >>> >> polygon, but there are probably some constraints that you could figure >>> out >>> >> that will prevent this from happening. >>> >> >>> >> Andy >>> >> >>> >> >>> >> >>> >> >>> >> > Hi >>> >> > >>> >> > Can anyone point me to a Houdini method (or other solution) for >>> packing >>> >> > random sized circles so that they are tightly packed and each >>> >> > circumference >>> >> > just touches its neighbors? >>> >> > >>> >> > Thanks >>> >> > >>> >> > Doug >>> >> > >>> >> > -- >>> >> > www.dougstruthers.com >>> >> > _______________________________________________ >>> >> > Sidefx-houdini-list mailing list >>> >> > Sidefx-houdini-list at sidefx.com >>> >> > https://lists.sidefx.com:443/mailman/listinfo/sidefx-houdini-list >>> >> > >>> >> >>> >> >>> >> _______________________________________________ >>> >> Sidefx-houdini-list mailing list >>> >> Sidefx-houdini-list at sidefx.com >>> >> https://lists.sidefx.com:443/mailman/listinfo/sidefx-houdini-list >>> >> >>> >> _______________________________________________ >>> >> Sidefx-houdini-list mailing list >>> >> Sidefx-houdini-list at sidefx.com >>> >> https://lists.sidefx.com:443/mailman/listinfo/sidefx-houdini-list >>> >> >>> > >>> > >>> > >>> > -- >>> > www.dougstruthers.com >>> > _______________________________________________ >>> > Sidefx-houdini-list mailing list >>> > Sidefx-houdini-list at sidefx.com >>> > https://lists.sidefx.com:443/mailman/listinfo/sidefx-houdini-list >>> > >>> >>> >>> >>> -- >>> ======================================= >>> Andrew D Lyons | Digital Artist | http://www.tstex.com >>> ======================================= >>> _______________________________________________ >>> Sidefx-houdini-list mailing list >>> Sidefx-houdini-list at sidefx.com >>> https://lists.sidefx.com:443/mailman/listinfo/sidefx-houdini-list >>> _______________________________________________ >>> Sidefx-houdini-list mailing list >>> Sidefx-houdini-list at sidefx.com >>> https://lists.sidefx.com:443/mailman/listinfo/sidefx-houdini-list >>> >> _______________________________________________ >> Sidefx-houdini-list mailing list >> Sidefx-houdini-list at sidefx.com >> https://lists.sidefx.com:443/mailman/listinfo/sidefx-houdini-list >> > > > > -- > ======================================= > Andrew D Lyons | Digital Artist | http://www.tstex.com > ======================================= > -- ======================================= Andrew D Lyons | Digital Artist | http://www.tstex.com =======================================

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5 participants
7 comments

Geometry ROP HDA 7 years, 2 months

Magnus Pettersson

Hello guys, Im wondering if there is a way to get same look on a HDA as the ROP_geometry in SOPs (1 input and 0 outputs)? Im wanting to wrap the rop_geometry up in a digital asset to add some pipeline functionality when writing out stuff but i dont want any outputs going out from my hda, is this possible? ................................................................................................. Magnus Pettersson | Lead Effects TD Storm Studio AS www.stormstudios.no

no category

6 participants
9 comments

Apprentice on Windows 7 7 years, 2 months

Doug Struthers

Apprentice 11.0.581 is unable to write its preferences to C:/Users/Me/Documents/houdini11.0/* because Permission is denied. Changing this permission in Windows 7 does not appear to be possible without 3rd party tools such as lockhunter or Unlocker, some of which may have malware according to MS. Is there a known work around for this? Thanks Doug -- www.dougstruthers.com

no category

3 participants
5 comments

paper folding 7 years, 2 months

robert east

Hi List, I found this interesting video by chance on paper folding http://www.vimeo.com/25096113 . Just out of sheer interest if I wanted to approach this technique in Houdini what area of maths / vops should I be looking into. regards Rob -- Robert East Sydney Australia +61 (0) 299672804 "Houdini is a pipeline in a box. Maya is a box that you have to build a pipeline for"

no category

2 participants
2 comments

Get time from CH_Manager rather than OP_Context in HDK, why? 7 years, 2 months

Pablo Giménez

Hi all. I have been looking in the SParticle example from the HDK, and something I spotted inmediatelly is that the current frame is coming from: chman = OPgetDirector()->getChannelManager(); currframe = chman->getSample(context.getTime()); Is the first time I have seen this I usually just use OP_Context to get the current time or frame. Why this example is using a Channel Manager to ge the time. What are exactly directors? And the channel Manager? I have read the comments in OP/OP_Director.h but is still not really clear waht these nodes are for. Thanks -- Un saludo Best Regards Pablo Gim?nez

no category

2 participants
6 comments

Question about varying thickness 7 years, 2 months

Alex Czetwertynski

I'm modelling some reeds and am using a simple curve with twist SOPS to bend and twist it. However I would like to find a way to vary the thickness of each reed leaf. I know I can create a ramp parameter in a VOP SOP to control something like thickness, but what can I plug that into to actually gain control over the thickness of the leaf. Thanks! Alex

no category

6 participants
5 comments

moving to Toronto, can you help? 7 years, 2 months

Alvaro Castaneda

Hi Guys a fellow Houdini artist needs your help. I'm kinda off topic here but not, I'm moving to Toronto for my new job and need a small place to rent for a few week till I can close the deal with an apartment. I'm looking for something close to downtown since my job is there, but I'm not closed to suggestions. I know a lot of you live in Toronto so any help would be very appreciated. Thanks guys and thanks Houdini for landing me an awesome job :) Cheers!! ?? *.:varomix:.* MIX Studio 3D Artist/Generalist TD www.varomix.net My profiles: [image: LinkedIn] <http://www.linkedin.com/in/varomix> [image: Twitter] <http://twitter.com/varomix> [image: Facebook]<http://www.facebook.com/varomix>

no category

5 participants
5 comments

visualizing env light hdr 7 years, 2 months

Zoran Arizanovic

hi what would be the best way to setup a scene so i could see hdr on a env light in the viewport thanks zoran

no category

6 participants
7 comments

Houdini + 3Delight + PTC 7 years, 2 months

Alvaro Castaneda

Hi guys Been trying literally all day to get ptc files out of Houdini + 3Delight but I just can't seem to make it work at all, I started using the ptc occlusion example included with 3delight ANyone has any experience doing ptc? can you help. please? Thanks

no category

2 participants
6 comments

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sidefx-houdini-list July 2011