feat: add intersecion options

This PR adds VFXProps.intersection to control transition shader behavior. These property changes how element are considered to be entered to / left from the viewport.

type VFXProps = {
    /**
     * Options to control transition behaviour.
     * These properties work similarly to the IntersectionObsrever options.
     */
    intersection?: {
        /** Threshold for the element to be considered "entered" to the viewport. */
        threshold?: number;

        /** Margin of the viewport to be used in intersection calculcation. */
        rootMargin?: RectOpts;
    };
};

Changes

Added VFXProps.intersection
Added new uniform value uniform float intersection
Added new shader focusTransition

fand / vfx-js

feat: add intersecion options #85

Changes