ReRange POP

Summary

The ReRange POP takes any attribute of its input, re-ranges its values, and outputs them to the same attribute, any other existing attribute or a new attribute. It operates on either point, vertex or primitive attributes.

It takes each value of the specified attribute and applies a From range - To range conversion.

If you set Parameter Size to 3 and your attribute is a float3 like P, then for each component of P you can have separate re-range parameters for each attribute component.

The attributes you specify can be any type, including float2, float3, float4, double, etc. You can cause the output parameter to be converted to integers.

When creating a new attribute, you simply put the new attribute name in Output Attribute Scope. The ReRange POP will determine what data type it will be, but you can override it with the >>> expansion parameters.

For Input Attribute Scope you can specify a subset of the components, like P(1) P(0) (same as P.yx swizzle notation) which has the effect of re-ordering Y and X.

rerangePOP_Class

Parameters - ReRange Page

Attribute Class attrclass - ⊞ - Makes the POP operate on point attributes, vertex attributes or primitive attributes where applicable.

• Point point -

• Vertex vertex -

• Primitive primitive -

Group group - If there are input groups, specifying a group name in this field will cause this POP to act only upon the group specified.

Input Attribute Scope inputattrscope - Input's attributes you want to affect within the chosen attribute class, or attribute components.

Parameter Size parsize - ⊞ - Number of independent configurable parameter values.

• 1 1 -

• 2 2 -

• 3 3 -

• 4 4 -

Map from Low fromlow - Reranges the attribute value.

Map from High fromhigh - Reranges the attribute value.

Map to Low tolow - Reranges the attribute value.

Map to High tohigh - Reranges the attribute value.

Cast to castto - ⊞ - Allows to cast the output attribute to a different type if wanted.

• Automatic auto -

• Float float -

• Int int -

Output Attribute Scope outputattrscope - ⊞ - Name of attribute to output (can choose components of attribute), can choose from menu.

• P P -

• N N -

• Color Color -

• Color.rgb Color.rgb -

• Tex Tex -

• PointScale PointScale -

• LineWidth LineWidth -

Override Automatic Attribute overrideautoattr - Whether to override the kind of attribute automatically created based on the POP input and parameters. Allows to specify manually the type and number of components of the new attribute.

Attribute Type attrtype - ⊞ - The output attribute's data type, default float.

• float float -

• double double -

• int int -

• uint uint -

• Color color -

• Color (double) dcolor -

• Direction dir -

• Direction (double) ddir -

Components attrnumcomps - ⊞ - The number of components in the new custom attribute.

• 1 1 -

• 2 2 -

• 3 3 -

• 4 4 -

Default Value attrdefaultval - ⊞ - Default values of the output attribute components if they cannot be computed.

• Default Value attrdefaultval0 - Default value(s) of the attribute.

• Default Value attrdefaultval1 - Default value(s) of the attribute.

• Default Value attrdefaultval2 - Default value(s) of the attribute.

• Default Value attrdefaultval3 - Default value(s) of the attribute.

Parameters - Common Page

Bypass bypass - Pass through the first input to the output unchanged.

Free Extra GPU Memory freeextragpumem - Free memory that has accumulated when output memory has grown and shrunk.

Delete Input Attributes delinputattrs - Only output which attributes you specify in this POP - helps isolate attributes into a separate branch.

Operator Inputs

• Input 0: -

Info CHOP Channels

Extra Information for the ReRange 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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POPs (Point Operators) is a new  of TouchDesigner that runs on the GPU accelerated graphics card or chips, and creates/modifies 3D data which is rendered by the  or passed to devices like DMX lighting, LED arrays, lasers or other external systems.

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.

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

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

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

A Group in POPs and SOPs is a named subset of points or primitives. It is created with the or Group SOP. Numerous operations in POPs and SOPs (using a Group parameter) can be restricted to affect the points or primitives in selected groups, and not affect others.

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

The Graphics Processing Unit. This is the high-speed, many-core processor of the graphics card/chip that takes geometry, images and data from the CPU and creates images and processed data.

Information associated with (or ) geometry. , and (polygons, lines, etc) can have any number of attributes. In POPs, position (P) is standard, and built-in optional attributes are (N), texture coordinates (Tex), color (Color), etc.

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