Experimental:Primitive POP

Summary

The Primitive POP lets you manually create primitives. Primitives are made from points, so it takes an optional input POP, from which you can delete its primitives and create new ones. Then you can add a set of new points manually using blocks of sequential parameters on the Points page.

Next on the Primitives page you create new triangles, quads, lines, line strips and point primitives. When Method is By Set, and Primitive Type is Triangles, every 3 points creates a triangle. When Method is By Pattern, the points are selected by Pattern Matching, for example selecting Line Strip and pattern [0-9] creates a 10-point line strip.

On the Setup page the points can be given any new built-in or custom attributes.

On the Setup page you can remove the original primitives from the input POP by turning on turn on Delete Primitives + Keep Points.

On the Post page you can remove unused points in the result or turn them into point primitives.

When you create new primitives from the consolidated set of points, using sequential blocks you can create any combination of primitive types, and each primitive's vertices can be manually-specified or generated using numeric patterns.

See also Point POP which is basically the Points page of the Primitive POP.

You can re-connect a set of existing points by connecting a POP to the input, turning on Delete Primitives and Keep Points, adding no new points, then creating new primitives on the Primitive page.

To create a Point primitive per point, on the Primitive page, change Type to Point.

primitivePOP_Class

Parameters - Setup Page

Delete Primitives and Keep Points keep -

Add Points addpts -

Pre-Multiply RGB by Alpha premultcolor -

New Attribute attr -

Name attr0name - ⊞ -

• Custom custom -

• N n -

• Color color -

• Tex tex -

• PointScale pointscale -

• LineWidth linewidth -

Custom Name attr0customname -

Type attr0type - ⊞ -

• float float -

• double double -

• int int -

• uint uint -

• dir dir -

• dbl dir ddir -

Number of Components attr0numcomps - ⊞ -

• 1 1 -

• 2 2 -

• 3 3 -

• 4 4 -

Default Value attr0value - ⊞ -

• Default Value attr0valuer -

• Default Value attr0valueg -

• Default Value attr0valueb -

• Default Value attr0valuea -

Parameters - Points Page

Delete Primitives and Keep Points keep -

Point pt -

Position pt0pos - ⊞ -

• Position pt0posx -

• Position pt0posy -

• Position pt0posz -

Parameters - Primitives Page

Method method - ⊞ -

• None none -

• By Set set -

• By Pattern pattern -

Primitives Type setprimtype - ⊞ -

• None none -

• Points points -

• Lines lines -

• Triangles triangles -

• Quads quads -

• Line Strip linestrip -

• Closed Line Strip closedlinestrip -

Set set - ⊞ -

• All Points all -

• Groups of N Points group -

• Skip Every Nth Point skip -

N n -

Primitive prim -

Type prim0type - ⊞ -

• None none -

• Points points -

• Lines lines -

• Triangles triangles -

• Quads quads -

• Line Strip linestrip -

• Closed Line Strip closedlinestrip -

Point Index Pattern prim0pattern -

Parameters - Post Page

Unused Points unusedpointsop - ⊞ -

• Do Nothing donothing -

• Remove remove -

• Turn into Point Prims pointprims -

Copy Topology Info Back to CPU cpureadback -

Parameters - Common Page

Bypass bypass -

Delete Input Attributes delinputattrs -

Parameter Color Space parmcolorspace - ⊞ - Controls how all color parameters on this node are interpreted. The color values as treated as being in the selected color space, and are converted to the Working Color Space before they are used as part of the node's operation. Note that this does not change the color space of the node itself, as that is always in the Working Color Space.

• sRGB srgb - sRGB color space, with sRGB transfer function. Considered an SDR color space with respect to Reference White.

• sRGB - Linear srgblinear - sRGB color space, with linear transfer function. Considered an SDR color space with respect to Reference White.

• Rec.601 (NTSC) rec601ntsc - Rec.601 with NTSC primaries color space, with Rec.601 transfer function. Considered an SDR color space with respect to Reference White.

• Rec.709 rec709 - Rec.709 color space, with Rec.709 (same as Rec.2020) transfer function. Considered an SDR color space with respect to Reference White.

• Rec.2020 rec2020 - Rec.2020 color space, with Rec.2020 (same as Rec.709) transfer function. Considered an HDR color space with respect to Reference White.

• DCI-P3 dcip3 - DCI-P3 color space, with D65 white point and 2.6 gamma transfer function. Considered an HDR color space with respect to Reference White.

• DCI-P3 (D60) dcip3d60 - DCI-P3 "D60 sim" color space, with D60 white point, and 2.6 gamma transfer function. Considered an HDR color space with respect to Reference White.

• Display-P3 (D65) displayp3d65 - Display-P3 color space, with D65 white point, and sRGB gamma transfer function. Considered an HDR color space with respect to Reference White.

• ACES2065-1 aces2065-1 - ACES 2065-1 (also known as ACES AP0) color space, with a linear gamma transfer function. Considered an HDR color space with respect to Reference White.

• ACEScg acescg - ACEScg (also known as ACES AP1) color space, with a linear gamma transfer function. Considered an HDR color space with respect to Reference White.

• Passthrough passthrough - When selected, the color values will be used as-is in the operation, without any modification or attempt to convert them into the Working Color Space.

Parameter Reference White parmreferencewhite - ⊞ - When converting a parameter color value to the Working Color Space, this controls how it should be treated with respect to Reference White. If the Working Color Space is the same Reference White, then no adjustment is done. If they are different, then the Reference White level (brightness) of this color will be adjusted to the range expected by the Working Color Space. For example if the project is set to have a SDR Reference White of 120 nits, and the HDR Reference White is 80 nits, then a color of (1, 1, 1), which is 120 nits in the SDR color space, will be converted to be (1.5, 1.5, 1.5), which is 120 nits still in the HDR Working Color Space.

• Default For Color Space default - Will use either the SDR or the HDR Reference White, based on the color space selected.

• Standard (SDR) sdr - Will treat the Parameter Color Space as SDR for it's reference white value.

• High (HDR) hdr - Will treat the Parameter Color Space as HDR for it's reference white value.

Operator Inputs

• Input 0: -

Info CHOP Channels

Extra Information for the Create POP can be accessed via an Info CHOP.

Common Operator Info Channels

• total_cooks - Number of times the operator has cooked since the process started.

• cook_time - Duration of the last cook in milliseconds.

• cook_frame - Frame number when this operator was last cooked relative to the component timeline.

• cook_abs_frame - Frame number when this operator was last cooked relative to the absolute time.

• cook_start_time - Time in milliseconds at which the operator started cooking in the frame it was cooked.

• cook_end_time - Time in milliseconds at which the operator finished cooking in the frame it was cooked.

• cooked_this_frame - 1 if operator was cooked this frame.

• warnings - Number of warnings in this operator if any.

• errors - Number of errors in this operator if any.

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A surface type in SOPs that includes polygon, curve (NURBS and Bezier), patch (NURBS and Bezier) and other basic shapes like sphere, tube and metaball. Points and Primitives are part of the Geometry Detail, which is a part of a SOP.

Each SOP has a list of Points. Each point has an XYZ 3D position value plus other optional attributes. Each polygon Primitive is defined by a vertex list, which is list of point numbers.

An operator whose Bypass flag is set does nothing: All data going into its first input appears at its output unaffected.

Information associated with SOP geometry. Points and primitives (polygons, NURBS, etc.) can have any number of attributes - position (P) is standard, and built-in optional attributes are normals (N), texture coordinates (uv), color (Cd), etc.

A Link. The grey dashed lines between nodes is a Reference or Link that indicates one operator is getting data from another operator from any Operator Family.

The grey dashed lines between nodes is a Reference (or Link). A Reference is (1) a Parameter Reference, a parameter in an OP that is a name or path to another operator, (2) a Node Reference, an expression in a parameter or DAT script that contains the name or path of another operator, (3) a DAT Cell Reference or (4) a CHOP Channel Reference.

A Link or Reference is a dashed line between nodes that represent other data flowing between nodes. Examples are CHOP Exports, node Paths in parameters, and expressions in parameters referencing CHOP channels, DAT tables and other nodes. In contrast is a Wire that connects nodes in the same Operator Family.

A parameter reference can be setup between any two parameters by putting an expression in one parameter that refers to another parameter. This creates a Link between the two parameters such that when one changes, the other will change automatically (known in other software as a "constraint").

An Operator Family which operate on Channels (a sequence of numbers (Samples)) which are used for animation, audio, mathematics, simulation, logic, UI construction, and data streamed from/to devices and protocols.