Litho Graph

A picture’s worth a thousand words: draw your ideas with Litho Graph!

Make precise sketches of anything, wherever you are. Litho Graph’s drawing tools snap to the grid, making it easy to make precise lines. Use cartesian grids for 2D sketches, or isometric grids for 3D work. And with Litho Graph’s large page size (equivalent to US Letter size), you can pan and zoom across a large area. You can even change the paper and grid colours for each of your many drawings, letting you work the way you like.

Follow @LithoGraph on Twitter for updates.

RXBlendColourPicker

This is a colour picker that lets you pick a blend between two other swatches.

Full source for the colour picker, including the artwork, is available on github.

As may be evident from this site’s design, I like stepped gradients.

Get It

You can download RXBlendColourPicker (pre-built) from github.

Install It

Unzip the download, and move the result into ~/Library/ColorPickers. If you don’t have that folder, make it first.

Use It

1. Pick two colours, and drag them to the swatch list at the bottom of the colour panel.

2. Then on the blend colour picker, drag the swatches into the colour wells underneath the slider.

3. Adjust the slider as desired, or enter a precise percentage for the blend.

Et voilà! You have a blended colour.

Limitations

RXBlendColourPicker does its blends with NSColor’s handy -blendedColorWithFraction:ofColor: method. This means that its blends are done in the RGB colour space, and as such aren’t suitable for CMYK work, or for blending two colours’ hues without affecting their saturation or value (HSV).

If there’s interest in having such features, they won’t be hard to add; let me know if they would be useful to you.