Krita/Manual/Tools/Transform

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Transform Tool

Krita tool transform.png

The Transform tool lets you quickly transform the current selection or layer. Basic transformation options include resize, rotate and skew. In addition, you have the option to apply advanced transforms such as Perspective, Warp, Cage and Liquid. These are all powerful options and will give you complete control over your selections/layers.

When you first invoke the tool, handles will appear at the corners and sides, which you can use to resize your selection or layer. You can perform rotations by moving the mouse above or to the left of the handles and dragging it. You can also click anywhere inside the selection or layer and move it by dragging the mouse.

You can fine-tune the transform tool parameters using Krita docker. The parameters are split between five tabs: Free Transform,Warp, Perspective, Cage and Liquify

Free Transform docker

Free transform

This allows you to do basic rotation, resizing, flipping, and even perspective skewing if you hold 'alt'.

Holding the Shift key will maintain your aspect ratio throughout the transform.

Free transform in action.

Perspective

While free transform has some perspective options, the perspective transform allows for maximum control. You can drag the corner points, or even the designated vanishing point.

You can also change the size, shear and position transform while remaining in perspective with the tool-options.

Perspective transform

Warp

Warp allows you to deform the image by dragging from a grid or choosing the dragging points yourself.

Warp Option
Free transform in action.

There's warp options: Rigid, Afine and similtude. These change the algorithm used to determine the strength of the deformation.

The flexibility determines, how strong the effect of moving these point are.

Anchor Points

You can divide these either by subdivision or drawing custom points.

Subdivision
This allows you to subdivide the selected area into a grid.
Draw
Draw the anchor points yourself. Locking the points will put you in transform mode. Unlocking the points back into edit mode.

Cage

This is a very powerful one. Create a cage around an image, and when it's closed, you can use it to deform the image.

If you have at the least 3 points on the canvas, you can choose to switch between deforming and editing the existing points.

Transforming a straight banana to be curved with the cage tool

Hotkeys

Both Cage and Warp use little nodes. These nodes can be selected and deselected together by pressing ctrl before clicking nodes.

Then you can move them by pressing the cursor inside the bounding box. Rotating is done by pressing and dragging the cursor outside the bounding box and scaling the same, only one presses ctrl before doing the motion.

Liquify

Transform Tool Options Liquify.PNG

Like our deform brush, the liquify brush allows you to draw the deformations straight on the canvas.

Move
Drag the image along the brush stroke.
Scale
Grow/Shrink the image under the cursor.
Rotate
Twirl the image under the cursor
Offset
Shift the image under the cursor.
Undo
Erases the actions of other tools.
Liquify used to turn an apple into a pear

In the options for each brush there's:

Mode
This is either wash or build up. Wash will normalise the effect to be between none, and the amount parameter as maximum. Build-up will just add on until it's impossible..
Size
The brush size. The button to the right allow you to let it scale with pressure.
Amount
The strength of the brush. The button to the right let's it scale with tablet-pressure.
Flow
Only applicable with build-up.
Spacing
The spacing of the liquify dabs.
Reverse
Reverses the action, so grow becomes shrink, rotate results in clockwise becoming counter-clockwise.
liquefy on the left and deform brush on the right.

Krita also has a deform brush which is much faster than liquefy, but has less quality. If you are attempting to make liquify a little faster, note that it speeds up with the less information it needs to process, so working with liquefy within a selection or using liquefy on a seperate layer with little on it will greatly enhance the speed.

Recursive Transform

The little spider icon on the lower-left of the transform tool options is the Recursive Transform.

recursive transform transforms all the layers in the group, so with this apple, both the line-art as the fill will be transformed.

Recursive transform, when toggled, allows you to mass-transform all the layers in a group when only transforming the group.

Continuous Transform

If you apply a transformation, and try to start a new one directly afterwards, Krita will attempt to recall the previous transform, so you can continue it. This is the continuous transform. You can press esc to cancel this and start a new transform.

Transformation Masks

These allow you make non-destructive transforms, check here for more info.


This page was last modified on 22 July 2015, at 14:06. Content is available under Creative Commons License SA 4.0 unless otherwise noted.