The Gradient Tool does a great job in drawing a simple color gradient across layers (pixel layers, fill layers, adjustment layers, live filter layers, layer masks) as well as vector and text content. However, you might want to apply a more complex fill, introducing more than two colors along the gradient path, adjust where each color is positioned and/or control color transitions. You can do this in two ways:
Using the former, you modify the gradient by eye; the latter lets you design with precision and absolute control.
If you apply a gradient directly to your image's layer you'll destroy the layer content. Instead, apply gradients to a separate pixel, fill, adjustment, filter, mask or vector layer. With Fill layers, your gradient path will additionally remain editable.
With the Gradient Tool selected, click the content with a gradient fill applied and then do any of the following:
It is possible to rescale a bitmap fill by either restricting or allowing for the bitmap fill to grow or shrink when transforming, depending on the desired effect. One benefit here is that it is possible to leave the bitmap image and its texture unaffected by shrinking or stretching.
When you scale or shear an object with a linear, radial or conical gradient applied, the gradient will automatically reapply itself to fit the modified object's new shape. For shearing, dashed correction paths are applied to the gradient to indicate the gradient transformation.
The paths can be edited to control the shear and scale on the fill if needed—the path and stop can also be removed to ignore the gradient transform if needed.
This is also important when transforming two-dimensional objects onto an isometric grid plane as the gradient also needs to be intelligently transformed onto the plane, along with the shape's outline. On the transformed object, a dashed correction path is automatically applied as before.