Transitions API

[anthonime]

TRANSITION (smoke tests)

• [ ] d3.transition - start an animated transition.(OMITTED)
• [x] transition.delay - specify per-element delay in milliseconds.
• [x] transition.duration - specify per-element duration in milliseconds.
• [x] transition.ease - specify transition easing function.
• [x] transition.attr - smoothly transition to the new attribute value.
• [x] transition.attrTween - smoothly transition between two attribute values.
• [x] transition.style - smoothly transition to the new style property value.
• [x] transition.styleTween - smoothly transition between two style property values.
• [x] transition.text - set the text content when the transition starts.
• [x] transition.tween - specify a custom tween operator to run as part of the transition.
• [x] transition.select - start a transition on a descendant element for each selected element.
• [x] transition.selectAll - start a transition on multiple descendants for each selected element.
• [x] transition.filter - filter a transition based on data.
• [x] transition.transition - when this transition ends, start another one on the same elements.
• [x] transition.remove - remove selected elements at the end of a transition.
• [x] transition.empty - returns true if the transition is empty.
• [x] transition.node - returns the first node in the transition.
• [ ] transition.size - returns the number of elements in the selection. (in v3.2)
• [x] transition.each - add a listener for transition end events.
• [x] transition.call - call a function passing in the current transition.

EASE (Tested in TestEasing)

• [x] d3.ease - customize transition timing.
• [x] ease - a parametric easing function.

TIMER (Tested in Lorenz System)

• [x] d3.timer - start a custom animation timer.
• [x] d3.timer.flush - immediately execute any zero-delay timers.

INTERPOLATION

• [ ] d3.interpolate - interpolate two values. (OMITTED: not necessary with java strong typing)
• [x] interpolate - a parametric interpolation function.
• [x] d3.interpolateNumber - interpolate two numbers.
• [x] d3.interpolateRound - interpolate two integers.
• [x] d3.interpolateString - interpolate two strings.
• [x] d3.interpolateRgb - interpolate two RGB colors.
• [x] d3.interpolateHsl - interpolate two HSL colors.
• -[ ] d3.interpolateLab - interpolate two L_a_b* colors.-
• [ ] d3.interpolateHcl - interpolate two HCL colors.
• [x] d3.interpolateArray - interpolate two arrays of values.
• [x] d3.interpolateObject - interpolate two arbitrary objects.
• [x] d3.interpolateTransform - interpolate two 2D matrix transforms.
• [ ] d3.interpolators - register a custom interpolator.

[anthonime]

also make the bridge with Scale.interpolate method.

[anthonime]

Interpolations API remaining things:

• [ ] d3.transition : missing the version with the selection argument
• [x] transition.size
• [ ] accessors to each specific interpolators (e.g: d3.interpolateRound)
• [ ] d3.interpolate "generic" version
• [ ] d3.interpolateHcl
• [ ] d3.interpolateLab
• [x] d3.interpolateTransform
• [ ] d3.interpolators().push(newInterpolator) does not work from Java side.

[anthonime]

closing this issue: remaining methods are specified in my previous comment and are postponed to next version