Deforms an image by moving the underlying UV coordinates.
This operation deforms an image by moving the underlying UV coordinates. An input plane is used to define the deformation. This plane can define the deformation in several ways:
| UV Map | The plane contains the UV coordinates to map to. (Hint: Use a UV Map generator to create a base UV map to manipulate) |
| UV Shift | The plane contains per-pixel translations to apply to the image. Floating point deform plane or planes with negative values work best with this method. |
| UV Gradient | The plane is a 1 channel mask. Pixels are moved in the direction of the gradient (2D vector pointing in the direction of greatest value increase). (Hint: Try using a concentric ramp as a deform plane) |
This operation can also be thought of as a per-pixel transform.
Parameters
| Deform Plane | The input plane that describes the deformation. | ||||||||
| Deform | How to interpret the deform plane’s data.
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| Scale | The scale applied to the UV Shift or UV Gradient method transformations. | ||||||||
| Image Wrap | How UV coordinates above 1 or below 0 are wrapped back into the 0 to 1 range, if at all.
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Mask
A mask can be chosen to limit the effect of the operator to areas defined by the mask. The mask can be taken from the mask input (side input) or from the first input itself.
| Effect Amount | If no mask is present, this blends the output with the input by a constant amount (0 = all input, 1 = all output). If a mask is present, this amount multiplies the mask. | ||||||
| Operation Mask | Selects the mask plane to use as a mask from the mask input. The mask can be selected from: A mask can be a component of a plane or an entire plane. If a vector plane is supplied as a mask, its components are multiplied by the images' components. Scalar Mask ('A', 'C.r')
C.r = I.r * M
C.g = I.g * M
C.b = I.b * M
Vector Mask ('C')
C.r = I.r * M.r
C.g = I.g * M.g
C.b = I.b * M.b
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| Resize Mask to Fit Image | If the mask image is a different resolution than the output image, turning on this parameter will scale the mask to the output image’s resolution. If this node is changing constantly, and the mask is not, it is somewhat faster to put a Scale COP down to do the resize for the mask image. Otherwise, the scale will occur every time this node cooks. | ||||||
| Invert Mask | Inverts the mask so that all fully 'masked' portions become unmasked. This saves you from inserting an Invert COP after the node with the mask. |
Scope
| Plane Scope | Specifies the scope for both the RGB components of Color, Alpha, and other planes. The (C)RGBA mask only affects Color components and Alpha. 'C' will toggle all the RGB components. For planes other than Color and Alpha, the plane name (plus component, if applicable) should be specified in the string field. The pulldown menu can be used to select planes or components present in this node. A plane is specified by its name. A component is specified by both its plane and component name. The '*' wildcard may be used to scope all extra planes. Any number of planes or components can be specified, separated by spaces. Examples:
P
N.x N.y
P N Pz
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Frame Scope
| Frame Scope | Allows scoping of specific frames in the frame range. This is in addition to the plane scope (so a plane at a certain frame must be both plane scoped and frame scoped to be modified).
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| Frame Range | For Inside/Outside range, this parameter specifies the subrange of the sequence to scope (or unscope). This can be edited in Timeline viewer mode (Ctrl+2 in viewer). | ||||||||||||
| Frame Dropoff | For Inside/Outside Range, this parameter specifies certain number of frames before and after to slowly ramp up to scoped. The operation will be blended with its input to 'ease in' or 'ease out' the scoping effect over a number of frames. This can be edited in Timeline viewer mode (Ctrl+2 in viewer). | ||||||||||||
| Non-scoped Effect | For unscoped frames, this sets the blend factor between the input and modified images. Normally this is zero (use the input image). By setting this to a non-zero value, you can make unscoped frames be 'slightly' unscoped. The value can vary between 0 (unscoped) and 1 (scoped). | ||||||||||||
| Frame List | The frame list for 'Specific Frames'. Frame numbers should be separated by spaces. | ||||||||||||
| Automatically Adjust for Length Changes | If the sequence range changes, enabling this parameter will adjust the subrange and frame dropoff lengths to fit the new range. |
Local variables
| L | Sequence length |
| S | Start of sequence |
| E | End of sequence |
| IL | Input sequence length |
| SR | Sequence frame rate |
| NP | Number of planes in sequence |
| W,H | Width and height of image |
| I | Image index (0 at start frame) |
| IT | Image time (0 at start frame) |
| AI | Current plane array index |
| PI | Current plane index |
| PC | Num of channels in current plane |
| CXRES | Composite Project X resolution |
| CYRES | Composite Project Y resolution |
| CPIXA | Composite Project pixel aspect ratio |
| CDEPTH | Composite Project raster depth |
| CBP | Composite Project black point |
| CWP | Composite Project white point |
Examples
| MakeRipples | Load | Launch |
This example demonstrates how to create a ripple effect using the Deform COP. A custom animated displacement map is created using the Ramp, Gamma, and Noise COPs. The displacement map is then used by the Deform COP to alter the image. | |