Canvas 3D Animation Library
 

forwardingController Library Method

Short Description: Creates a forwarding / transparent controller

Signature: taccgl.forwardingController ()
Class: taccgl Class
 

Creates and returns a forwaring controller that forwards mouse events during the animation to the remaining real HTML elements on the screen. To acticate use useController. Please read Controller Class about the purpose of controllers in general.

In the following two examples you can compare the bahaviour of the blocking and the forwarding controller. Click on run multiple times, while the previous animation is still running. With the blocking controller you should notice that the link is blocked, while the animation is running and so it can be started just once. With the forwarding controller, you can start and run it multiple times simultaneously.

Examples

taccgl.useController(taccgl.blockingController()); var a=taccgl.a("testimg").paint().to (0,1000,0).start(); RUN
taccgl.useController(taccgl.forwardingController()); var a=taccgl.a("testimg").paint().to (0,1000,0).start(); RUN

Note (1) that there is a good chance that animations cannot runs simultanously, and therefore it is much safer to avoid that animations can be started simultaneously. The blocking controller is however not sufficient in that, so we very much recomment reading .

Note (2) The forwaring works only with real HTML elements. In the following example the "run" link is animated as well and so does not work despite the use of the forwarding controller. On the other hand due to the forwarding controller the other links, including the examples above, work during the animation.

taccgl.useController(taccgl.forwardingController());
var a=taccgl.a("testimg").paint().to (0,1000,0).dur(4).start();
var b=taccgl.actor("ex1").to (500,1000,0).dur(4).start();
RUN
taccgl.useController(taccgl.forwardingController());
var a=taccgl.a("testimg").paint().to (0,1000,0).dur(4).start();
var b=taccgl.actor("ex1").dur(4).start();
RUN
taccgl.useController(taccgl.forwardingController());
var a=taccgl.a("testimg").paint().to (0,1000,0).dur(4).start();
var b=taccgl.a("ex1").paint().opacity(0).opacityFinal().dur(4).start();
RUN
In the second example above the "run" link still does not work during animation. This is because the example box is still drawn with taccGL, just not moving. Although this has the advantage of honoring the z-coordinates it has the disadvantage of disabled links.

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