Feature request: Add spread option

[erf]

A spread option would be nice. E.g. [0, 1], where 0 is no spread, that is particles are shot in a line, where 1 is 360 deg spread.

You still should be able to randomize the spread, so perhaps a randomize option could also be added, e.g. [0, 1] where 0 is no random, that is always in a line and 1 is full random, e.g. 360 deg spread even when spread is 0. Or you could add a spread range e.g. [0.2, 0.5], so spread in between these values adding a random element in between.

An option to determine the spread of the starting position between the particles would also be nice.

Also, a variation of the particle rotation could perhaps be nice, and perhaps disable Z rotation all together.

[jpSimkins]

YES! Man, I have been playing with all the options just to find out that there is no way to adjust the spread. Really disappointing. Hopefully this will get added 🙏

[eEQK]

as a temporary workaround, you could use many ConfettiWidgets with a single controller (so they all fire at the same time) and slightly change blastDirection for each of the widgets

I wanted to get a blast from bottom center that will cover more or less the whole page, so I created 3 widgets with these directions:

• -pi / 2 + 0.15
• -pi / 2
• -pi / 2 - 0.15

My build method implementation

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Stack(
        children: [
          Align(
            alignment: Alignment.bottomCenter,
            child: ConfettiWidget(
              confettiController: _controller,
              blastDirection: -pi / 2 + 0.15,
              emissionFrequency: 0,
              numberOfParticles: 20,
              maxBlastForce: 120,
              minBlastForce: 60,
            ),
          ),
          Align(
            alignment: Alignment.bottomCenter,
            child: ConfettiWidget(
              confettiController: _controller,
              blastDirection: -pi / 2,
              emissionFrequency: 0,
              numberOfParticles: 20,
              maxBlastForce: 120,
              minBlastForce: 60,
            ),
          ),
          Align(
            alignment: Alignment.bottomCenter,
            child: ConfettiWidget(
              confettiController: _controller,
              blastDirection: -pi / 2 - 0.15,
              emissionFrequency: 0,
              numberOfParticles: 20,
              maxBlastForce: 120,
              minBlastForce: 60,
            ),
          ),
        ],
      ),
    );
  }

[mrgithub]

This would be great as confetti seems to suck up memory after a while