Plasma effect: Difference between revisions

{

win1 = new qwidget()

{

setwindowtitle("Plasma effect")

setgeometry(100,100,500,600)

label1 = new qlabel(win1)

{

setgeometry(10,10,400,400)

settext("")

}

new qpushbutton(win1)

{

setgeometry(150,500,100,30)

settext("Draw")

setclickevent("Draw()")

}

show()

}

exec()

}

func draw

p1 = new qpicture()

color = new qcolor() { setrgb(0,0,255,255) } ### <<< BLUE

pen = new qpen() { setcolor(color) setwidth(1) }

paint = new qpainter()

{

begin(p1)

setpen(pen)

w = 256 ### 256

h = 256 ### 256

time = 0

for x = 0 to w -1

for y = 0 to h -1

time = time + 0.99

value = sin(dist(x + time, y, 128, 128) / 8) +

sin(dist(x, y, 64, 64) / 8) +

sin(dist(x, y + time / 7, 192, 64) / 7) +

sin(dist(x, y, 192, 100) / 8) + 4

c = floor(value * 32)

r = c

g = (c*2)%255

b = 255-c

color2 = new qcolor()

color2.setrgb(r,g,b,255)

pen.setcolor(color2)

setpen(pen)

drawpoint(x,y)

next

next

endpaint()

}

label1 { setpicture(p1) show() }

return