func newBall() *Ball {
b := &Ball{
Graphics: pixi.NewGraphics(),
x: 0,
y: 0,
}
b.LineStyle(3, 0xff9387*rand.Float64(), 1)
bs = append(bs, b)
return b
}
func getParticle(x, y float64) *Particle {
var p *Particle
if len(ps) >= MAX_PARTICLES {
pool = append(pool, ps[0])
ps = ps[1:]
}
if len(pool) > 0 {
p = pool[0]
pool = pool[1:]
} else {
p = &Particle{
Graphics: pixi.NewGraphics(),
}
}
p.init(x, y)
return p
}
"github.com/Archs/js/dom"
"github.com/Archs/js/raf"
"github.com/Archs/pixi"
"math"
// "math"
"math/rand"
)
const (
MAX_PARTICLES = 280
)
var (
stage = pixi.NewContainer()
renderer *pixi.Renderer
ctx = pixi.NewGraphics()
COLOURS = []float64{0x69D2E7, 0xA7DBD8, 0xE0E4CC, 0xF38630, 0xFA6900, 0xFF4E50, 0xF9D423}
ps = []*Particle{}
pool = []*Particle{}
counter = 0
)
type Particle struct {
*pixi.Graphics
x, y float64
vx, vy float64
radius float64
theta float64
force float64
damping float64
color float64