Convergence

Gradient Convergence Models


All graphics with an interior, including Text Boxes, may have a Gradient Fill. The parameters that are used to model the transition are found on the Gradient Fill Panel. To show this panel select "Gradient Fill" from the Tools Menu which is on the Main Menu.

If your goal is to simply add or change the color of a graphic use the Style Panel which defines a graphic's fill color. Gradient FIll is "turned off" by selecting None for the Shape parameter.

A graphic doesn't need to be formally closed (like a rectangle or circle) to accept "Gradient Fill". All Bezier Curves accept Gradient Fill, a virtual straight line connects the start and end points to set the bounds of the fill color. Text boxes accept fill too.

A Gradient Fill transitions across two or more colors. You may select different mathematical functions for progression of the transition colors. Linear is the easiest to visualize, this model generates a simple uniform transition of colors from the inner to the outer. The other available models are listed and shown as examples to the left. Use the "Model" popup menu to select a model for the gradient.

The Start and Finish parameters are used to expand or contract the cycle of the gradient. A normal cycle extends from 0% to 100%, which causes the color to transition fully and exactly from the inner color to the outer. If the Finish parameter is decreased to 50% the inner color is the same, but the final color of the gradient will be the color that the model computes at 50% of the transition. The Green graphic shown below is an example of multiple transition cycles, the Start value for this gradient is -150% the Finish parameter is 250%.

You may enter the Start and Finish parameters numerically in percent. Alternatively you may use the sliders to vary the parameters and watch the gradient reflect the changes in real time. For very large values you will need to enter them numerically, the sliders only extend over a few cycles.

The different Models can be used to sharpen or soften the transition gradient. In most cases experimentation is the best method to find the correct model for a desired effect.

The Orientation and Color parameters have effect on the appearance of a Gradient FIll pattern.

The examples to the right demonstrate a few possibilities for different Convergence selections.