Showing posts with label Pattern. Show all posts

Metaballs provide a method for creating an organic-looking surface. The metaballs are blobs ("fields") of "density" floating in space. Houdini skins a surface around areas where the density is greater than some threshold.

When two metaballs overlap, Houdini adds their field effects together. Because the density of the force field can be increased by the proximity of other metaball force fields, metaballs have the unique property that they change their shape to adapt and fuse with surrounding metaballs. This makes them very effective for modeling organic surfaces.

You can specify negative Weights to create "pusher" metaballs. This lets you create holes in the surface by effectively subtracting density.

The field is controlled by a kernel function and a weight. The kernel function controls the gradient of the density value of a metaball field from 1 (at the center) to 0 (at its outside edge). The weight scales the density to shift the location of the surface closer or further away from the center. You can currently specify the shape of the field as an ellipsoid or a super-quadric.

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Metaballs provide a method for creating an organic-looking surface. The metaballs are blobs ("fields") of "density" flo...

How to Use Any Image as a Pattern Fill in Photoshop


A pattern is an image or line art that can be tiled repeatedly. A tile is the subdividing of a computer graphics selection into a series of squares and placing them on a layer or within the selection. Thus, a pattern in Photoshop is essentially a tiled image. The use of patterns can speed up your workflow by eliminating your need to create intricate objects that can otherwise be constructed using a repeatable image template. For example, if a selection needs to be filled with blue dots, a pattern reduces that task to a mouse click.
You can make your own custom patterns from photos or line art, use the preset patterns that come with Photoshop, or download and install pattern libraries from a variety of online sources.
You can define any image or selection as a pattern that can be used as a fill-in Photoshop.



How to Use a Pattern Fill in Photoshop
Open the image you'd like to use as a fill.
If you want to use the entire image as your fill, go to Select > Select All. Otherwise, use the Rectangle Marquee tool to make a selection.
Go to Edit > Define Pattern to open the Define Pattern dialog box. Give your selection a name and click OK.
Go to another image or create a new image.
Select the layer you want to fill or make a selection using one of the selection tools such as the Rectangular Marquee.
Go to Edit > Fill to open the Fill dialog box. In the Fill dialog box select the Custom Pattern pop-down.
Open the Custom Pattern drop-down menu to access a selection of patterns that are installed with Photoshop and any patterns you may have created previously. Click the pattern you wish to apply.
Leave the Script checkbox deselected. In Photoshop CS6 and later, scripted patterns are JavaScripts that randomly place an item defined as a pattern either in the selection or on a layer.
Choose a Blending Mode to have your pattern, especially if it is on a separate layer, interact with the colors of the pixels of the image it is placed over. Click OK.



How to Use Any Image as a Pattern Fill in Photoshop A pattern is an image or line art that can be tiled repeatedly. A tile is the s...