Applying transformations when sampling

Corel Painter allows you to sample part of an image and apply a transformation to the sample when you reuse it elsewhere. This technique is also referred to as multi-point cloning. You can apply transformations such as, scaling, rotating, shearing (also referred to as skewing), or you can apply perspective.

Multi-point sampling brush variants

To apply transformations when sampling, you can select a multi-point cloning brush variant from the Cloners brush category or you can use any brush variant that supports the cloning method. For more information, see To transform a brush variant into a cloner brush.

The following table describes the available multi-point sampling brush variants.

Multi-point Cloners brush variant	Example
Rotate, Scale 2P lets you turn the sampled area around its center of rotation and size it to a percentage of its original size. Rotate, Scale 2P uses two reference points.
Scale 2P lets you size the sampled area to a percentage of its original size. Scale 2P uses two reference points.
Rotate 2P lets you turn the sampled area around its center of rotation. Rotate 2P uses two reference points.
Rotate, Mirror 2P lets you turn the sampled area around its center of rotation while creating a horizontal or vertical mirror image of the clone source. Rotate, Mirror 2P uses two reference points.
Rotate, Scale, Shear 3P lets you turn the sampled area around its center of rotation, while sizing it to a percentage of its original size, and skewing its appearance. Rotate, Scale, Shear 3P uses three reference points.
Bilinear 4P lets you stretch, or warp, the sampled area disproportionately. You can also tile the clone source. Bilinear 4P uses four reference points.
Perspective 4P lets you give the sampled area the appearance of depth. Perspective Tiling 4P also lets you tile the sampled area. Perspective 4P uses four reference points.

Reference points

After selecting a brush variant, you need to set the sample and destination reference points in the image. The number of reference points depends on the type of transformation that you choose. The reference points allow you to identify the sample area, position the destination, and control the transformation. After the points are set, you can then apply brushstrokes to the destination area to gradually reveal the transformed sample. You can insert source points in one document and destination points in another, or you can insert both sets of points in the same document.

Sample source (left) and destination (right) reference points are set for Perspective cloning.

Tiling

Tiling allows you to fill a space by repeating a small sampled image. The 4-Point Tiling option is available for Bilinear or Perspective cloning only.

The four sample reference points define the sampled area, which is temporarily converted into a pattern tile. In the clone destination, the tile is warped according to the relative positions of the source and destination reference points and repeated as necessary to cover the area. If you want to save the sampled area for future use, you can capture it as a pattern. For more information, see Creating and editing patterns.

With 4-Point Tiling, the source image is repeated.

Tiling is particularly useful when you want to fill an area with the sample source. For more information, see Filling an area with a sampled image.

To scale the sample source

1	Click the Cloner tool in the toolbox.

You can disable offset sampling by clicking the Clone Color button in the Color panel or by clicking the Brush Selector on the Brush Selector bar, and choosing a non-Cloner brush variant.

To achieve the best scaling results, set the sample reference points at the outer edges of the object that you want to sample to better delineate its size. This ensures that the object will be scaled proportionally.

To rotate the sample source

1	Click the Cloner tool in the toolbox.

You can disable offset sampling by clicking the Clone Color button in the Color panel or by clicking the Brush Selector on the Brush Selector bar, and choosing a non-Cloner brush variant.

The line length does not affect the rotation.

To rotate and mirror the sample source

1	Click the Cloner tool in the toolbox.

You can disable offset sampling by clicking the Clone Color button in the Color panel or by clicking the Brush Selector on the Brush Selector bar, and choosing a non-Cloner brush variant.

To rotate and scale the sample source

1	Click the Cloner tool in the toolbox.

Two destination reference points are set in preparation for Rotate & Scale sampling.

You can disable offset sampling by clicking the Clone Color button in the Color panel or by clicking the Brush Selector on the Brush Selector bar, and choosing a non-Cloner brush variant.

To rotate, scale, and shear the sample source

1	Click the Cloner tool in the toolbox.

Sample source–destination reference points are set for Rotate, Scale, & Shear.

You can disable offset sampling by clicking the Clone Color button in the Color panel or by clicking the Brush Selector on the Brush Selector bar, and choosing a non-Cloner brush variant.

To warp the sample source

1	Click the Cloner tool in the toolbox.

You can disable offset sampling by clicking the Clone Color button in the Color panel or by clicking the Brush Selector on the Brush Selector bar, and choosing a non-Cloner brush variant.

You can tile the sample by enabling the 4-Point Tiling check box in the Cloning brush control panel.

To add perspective to the clone source

1	Click the Cloner tool in the toolbox.

You can disable offset sampling by clicking the Clone Color button in the Color panel or by clicking the Brush Selector on the Brush Selector bar, and choosing a non-Cloner brush variant.

To move previously set reference points

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