Experimental:Pattern POP

Summary

The Pattern POP is a generator that makes simple line strip shapes using elementary math functions in X, Y and Z. Alternately it can add a new attribute to an input POP using the elementary math functions.

The math functions include sine, cos, triangles, square waves, as well as ease in/out and random. Parameters control phase, repeats and re-ranging.

The Pattern POP can:

• make one or more 3D line strips generating a P attribute containing a different curve in X, Y and Z. (it can create Tex at the same time). (generator)
• add a new attribute (1-4 components) to an input POP, each component containing a separate type of curve. (filter)
• modify an existing attribute of an input POP by adding/multiplying the curve to it. (filter)
• create a POP that has no P attribute - just a curve in a new attribute. (generator)

See also: Curve POP, Math Mix POP

patternPOP_Class

Parameters - Pattern Page

Number of Points numpoints -

Cyclic cyclic -

Connectivity connectivity - ⊞ -

• None none -

• Line Strip linestrip -

• Lines lines -

• Point Prims points -

Parameter Size parsize - ⊞ -

• 1 1 -

• 2 2 -

• 3 3 -

• 4 4 -

Type type - ⊞ -

• Type type0 -

• Type type1 -

• Type type2 -

Seed seed -

Number of Cycles numcycles - ⊞ -

• Number of Cycles numcycles0 -

• Number of Cycles numcycles1 -

• Number of Cycles numcycles2 -

Step per Cycle steppercycle - ⊞ -

• Step per Cycle steppercycle0 -

• Step per Cycle steppercycle1 -

• Step per Cycle steppercycle2 -

Bias bias - ⊞ -

• Bias bias0 -

• Bias bias1 -

• Bias bias2 -

Phase phase - ⊞ -

• Phase phase0 -

• Phase phase1 -

• Phase phase2 -

Exponent exp - ⊞ -

• Exponent exp0 -

• Exponent exp1 -

• Exponent exp2 -

Map from Low fromlow - ⊞ -

• Map from Low fromlow0 -

• Map from Low fromlow1 -

• Map from Low fromlow2 -

Map from High fromhigh - ⊞ -

• Map from High fromhigh0 -

• Map from High fromhigh1 -

• Map from High fromhigh2 -

Map to Low tolow - ⊞ -

• Map to Low tolow0 -

• Map to Low tolow1 -

• Map to Low tolow2 -

Map to High tohigh - ⊞ -

• Map to High tohigh0 -

• Map to High tohigh1 -

• Map to High tohigh2 -

Reverse reverse - ⊞ -

• Reverse reverse0 -

• Reverse reverse1 -

• Reverse reverse2 -

Line Break Each Cycle linebreakcycle - ⊞ -

• Line Break Each Cycle linebreakcycle0 -

• Line Break Each Cycle linebreakcycle1 -

• Line Break Each Cycle linebreakcycle2 -

Closed closed -

Output Line Break Attribute outputlinebreakattr -

Texture Coordinates texture - ⊞ -

• Off off -

• Ramp Start to End rampstartend -

• Ramp Per Cycle ramppercycle -

Combine Operation combineop - ⊞ -

• Set set -

• Add add -

• Multiply mult -

Combine Attribute Scope combineatttscope -

Output Attribute Scope outputattrscope - ⊞ -

• P P -

• N N -

• Color Color -

• Color.i012 Color.i012 -

• Tex Tex -

• PointScale PointScale -

• LineWidth LineWidth -

Override Automatic Attribute overrideautoattr -

New Attribute Type newattrtype - ⊞ -

• float float -

• double double -

• int int -

• uint uint -

• dir dir -

• dbl dir ddir -

New Attribute Number of Components attrnumcomps - ⊞ -

• 1 1 -

• 2 2 -

• 3 3 -

• 4 4 -

New Attribute Default Value newattrdefaultval - ⊞ -

• New Attribute Default Value newattrdefaultval1 -

• New Attribute Default Value newattrdefaultval2 -

• New Attribute Default Value newattrdefaultval3 -

• New Attribute Default Value newattrdefaultval4 -

Attribute Class attrclass - ⊞ -

• Point point -

• Vertex vertex -

• Primitive primitive -

Group group -

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 Pattern 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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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.

A parameter in most CHOPs that restricts which channels of that CHOP will be affected. Normally all channels of a CHOP are affected by the operator. TOPs have Channel Mask, a similar feature.

A sequence of vertices form a Polygon in a SOP. Each vertex is an integer index into the Point List, and each Point holds an XYZ position and attributes like Normals and Texture Coordinates.

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.

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.