Experimental:Ray POP
Summary
The Ray POP casts a ray from each points of the input, in the direction defined by the Ray Attribute, and outputs new attributes that report what each ray hits.
The second input is the set of triangles and quads that the rays are tested against. The Ray POP can count the number of primitives it hit as it transmits through all primitive in its line, and the distance to the closest primitive.
It can output properties of the primitive it hit - its primitive index, the barymetric position on the primitive it hit, and the values of any attributes on the primitive it hit.
It an also output information about rays that are reflected. Assuming the Collision Geometry is a closed surface, the Ray POP can report whether it is located inside or outside the volume.
It can be put into a mode where it outputs line strips representing the rays that it casts, intersects and reflects.
See also Math Mix POP (has ray functions)
Parameters - Ray Page
Ray Attribute
rayattrib -
Negate Ray
negateray -
Number of Bounces
numbounces -
Connect Points
connectpoints -
Limit Ray Length
limitraylength -
Ray Distance Max Attrib
raydistancemaxattr -
Trim Ray
trimray -
Trim Distance Attrib
trimdistanceattr -
Any Hit
anyhit -
Hit Normal
hitnormal -
Hit Normal Name
hitnormalname -
Reflected Ray
doreflectedray -
Reflected Ray Name
reflectedrayname -
Point Intersection Distance
dist -
Point Intersection Distance Name
distname -
Farthest Hit
farhit -
Farthest Hit Name
farhitname -
Number of Hits
numhits -
Number of Hits Name
numhitsname -
Inside
inside -
Inside Name
insidename -
Hit Primitive Index
hitprimindex -
Hit Primitive Index Name
hitprimindexname -
Barycentric Coordinates
barycoords -
Barycentric Coordinates Name
barycoordsname -
Scale
scale -
Lift
lift -
Hit Point Attr Scope
hitpointattrscope - ⊞ -
- *
*-
Hit Primitive Attr Scope
hitprimattrscope - ⊞ -
- *
*-
Hit Vertex Attr Scope
hitvertattrscope - ⊞ -
- *
*-
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: -
- Input 1: -
Info CHOP Channels
Extra Information for the Ray POP can be accessed via an Info CHOP.
Common POP Info Channels
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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