Drop Shadow
Brief Description
Drop Shadow creates a shadow around the source object based on its alpha channel.
Controls
| Parameter / Script Name | Type | Default | Function |
|---|---|---|---|
Enabled / enabled
|
Boolean | On | |
Red / process_red
|
Boolean | On | Enable the red channel in output. Otherwise if there's a source the content of the main source is returned instead, else 0. |
Green / process_green
|
Boolean | On | Enable the green channel in output. Otherwise if there's a source the content of the main source is returned instead, else 0. |
Blue / process_blue
|
Boolean | On | Enable the blue channel in output. Otherwise if there's a source the content of the main source is returned instead, else 0. |
Alpha / process_alpha
|
Boolean | On | Enable the alpha channel in output. Otherwise if there's a source the content of the main source is returned instead, else 0. |
Distance / distance
|
Float | 20 | Distance of the shadow from the source. |
Angle / angle
|
Float | -45 | Angle of the shadow direction. |
Color / color
|
Color | 0, 0, 0, 1 | Color of the shadow. |
Blur Size / blurSize
|
Float 2D | 0, 0 | Size of the gaussian blur applied to the shadow. |
Blur Downscale Threshold / downscale_threshold
|
Float | 15 | When the blur size exceeds this threshold, the image is downscaled before blurring and upscaled afterward to approximate the full blur at much faster speed. |
Crop Blur To Composition Format / crop_source_to_comp
|
Boolean | On | Improves performance on large blurs when blurring outside‑comp areas is not required. |
Shadow Type / blendOrder
|
Choice | Shadow Under Source | Shadow Under Source
Shadow Over Source Inner Shadow Shadow Only |
Blending Mode / mode
|
Choice | Multiply |
Add: Ac + Dc — Adds source to destination. Color Dodge: if Ac < 1 → min(1, Bc / (1 - Ac)); else 1. Lighten: max(Ac, Bc). Linear Dodge: min(Ac + Bc, 1). Screen: Ac + Bc - Ac * Bc. Hard-light: multiply/screen depending on Ac. Hard Mix: vivid-light threshold. Linear Light: burn/dodge depending on Ac. Overlay: multiply/screen depending on Bc. Pin Light: removes mid-tones. Soft Light: branched soft-light formula. Vivid Light: color burn/dodge. Difference: abs(A - B). Divide: Ac / Bc (if Dc > 0 and Ac > 0). Exclusion: Ac + Bc - 2AcBc. Minus: Ac - Bc. Subtract: Bc - Ac. Color: SetLum(Ac, Lum(Bc)). Hue: SetLum(SetSat(Ac, Sat(Bc)), Lum(Bc)). Luminosity: SetLum(Bc, Lum(Ac)). Saturation: SetLum(SetSat(Bc, Sat(Ac)), Lum(Bc)). Replace: Ac. Destination Atop: Bca × Aa + Aca × (1 - Ba). Destination Out: Ba * Bc * (1 - Aa). Destination Over: Aa * (1 - Ba) + Bc. Destination In: Bc * Aa. Source Atop: Ac * Ba + Bc * (1 - Aa). Source Out: Ac * (1 - Ba). Normal: Ac + Bc * (1 - Aa). Source In: Ac * Ba. Xor: Ac * (1 - Ba) + Bc * (1 - Aa). Average: (Ac + Bc) / 2. Conjoint Over: branch based on Aa ≤ Ba. Disjoint Over: branch based on Aa + Ba ≥ 1. Geometric: 2AcBc / (Ac + Bc). Grain Extract: Bc - Ac + 0.5. Grain Merge: Bc + Ac - 0.5. Hypot: sqrt(Ac² + Bc²). Reflect: Aa² / (1 - Ba). Color Burn: 1 - min(1, (1 - Bc) / Ac). Darken: min(Ac, Bc). Linear Burn: Bc + Ac - 1. Multiply: Ac * Bc. Multiply (Math): Ac * Bc (negatives preserved). |
Colorspace / input_colorspace
|
Choice | Project Display Space | Project Working Space: The color is assumed to be expressed in the project working space. Project Display Space: The color is assumed to be expressed in the project display space. |
Mask / mask
|
Image | - | |
Mix / mix_with_source
|
Float | 1 | Dissolves between the original image at 0 and the image with the effect applied at 1. |