def drawconn(ctx, linewidth_start, linewidth_end, x1, y1, x2, y2,
cx1, cx2, cy1, cy2):
ctx.strokewidth(linewidth_end)
x2 -= linewidth_end / 2
cx1 = (x2 - x1) * cx1
cx2 = (x2 - x1) * cx2
cy1 = (y2 - y1) * cy1
cy2 = (y2 - y1) * cy2
startwidth = linewidth_start - 1
sw = startwidth / 2.
p1x = x1 + cx1
p1y = y1 + cy1
p2x = x2 - cx2
p2y = y2 - cy2
ctx.beginpath(x1, y1 - sw)
ctx.curveto(p1x, p1y, p2x, p2y, x2, y2)
ctx.curveto(p2x, p2y, p1x, p1y, x1, y1 + sw)
ctx.endpath()
ctx.nostroke()
ctx.fill(1, 0, 0)
ctx.oval(p1x - 3, p1y - 3, 6, 6)
ctx.fill(0, 1, 0)
ctx.oval(p2x - 3, p2y - 3, 6, 6)
def drawconn(ctx, linewidth_start, linewidth_end, x1, y1, x2, y2, cx1, cx2,
cy1, cy2):
ctx.strokewidth(linewidth_end)
x2 -= linewidth_end / 2
cx1 = (x2 - x1) * cx1
cx2 = (x2 - x1) * cx2
cy1 = (y2 - y1) * cy1
cy2 = (y2 - y1) * cy2
startwidth = linewidth_start - 1
sw = startwidth / 2.
p1x = x1 + cx1
p1y = y1 + cy1
p2x = x2 - cx2
p2y = y2 - cy2
ctx.beginpath(x1, y1 - sw)
ctx.curveto(p1x, p1y, p2x, p2y, x2, y2)
ctx.curveto(p2x, p2y, p1x, p1y, x1, y1 + sw)
ctx.endpath()
ctx.nostroke()
ctx.fill(1, 0, 0)
ctx.oval(p1x - 3, p1y - 3, 6, 6)
ctx.fill(0, 1, 0)
ctx.oval(p2x - 3, p2y - 3, 6, 6)
p2y = y2 - cy2
ctx.beginpath(x1, y1 - sw)
ctx.curveto(p1x, p1y, p2x, p2y, x2, y2)
ctx.curveto(p2x, p2y, p1x, p1y, x1, y1 + sw)
ctx.endpath()
ctx.nostroke()
ctx.fill(1, 0, 0)
ctx.oval(p1x - 3, p1y - 3, 6, 6)
ctx.fill(0, 1, 0)
ctx.oval(p2x - 3, p2y - 3, 6, 6)
init_surface(500, 150, scale=0.8)
ctx.background(ctx.color(1))
ctx.stroke(.3)
ctx.fill(.3)
#drawconn(ctx, 20, 3,
# 20, 20, 250, 120,
# 0.7, 0.28, 0.1, 0.2)
drawconn(ctx, 3, 3,
20, 20, 250, 120,
0.2, 0, 1.0, 0.0)
ctx.writesurface()
p1y = y1 + cy1
p2x = x2 - cx2
p2y = y2 - cy2
ctx.beginpath(x1, y1 - sw)
ctx.curveto(p1x, p1y, p2x, p2y, x2, y2)
ctx.curveto(p2x, p2y, p1x, p1y, x1, y1 + sw)
ctx.endpath()
ctx.nostroke()
ctx.fill(1, 0, 0)
ctx.oval(p1x - 3, p1y - 3, 6, 6)
ctx.fill(0, 1, 0)
ctx.oval(p2x - 3, p2y - 3, 6, 6)
init_surface(500, 150, scale=0.8)
ctx.background(ctx.color(1))
ctx.stroke(.3)
ctx.fill(.3)
#drawconn(ctx, 20, 3,
# 20, 20, 250, 120,
# 0.7, 0.28, 0.1, 0.2)
drawconn(ctx, 3, 3, 20, 20, 250, 120, 0.2, 0, 1.0, 0.0)
ctx.writesurface()
xo = 160
yo = 45
x = xo
y = yo
f = .2
col1 = ctx.color(.5, .2, .0)
col2 = ctx.color(.8, 1, .6)
textcol = ctx.color(.3)
ctx.font('Open Sans')
ctx.fontsize(18)
ctx.fill(textcol)
ctx.text('lighten', 85, y + 36)
ctx.text('0.2', x + w + 26, y - 12)
ctx.text('0.4', x + w * 2 + 26, y - 12)
ctx.text('0.6', x + w * 3 + 26, y - 12)
ctx.text('0.8', x + w * 4 + 26, y - 12)
c = col1
ctx.fill(c)
ctx.rect(x, y, w, h)
x += w + padx
c = c.lighten(f)
ctx.fill(c)
ctx.rect(x, y, w, h)
yo = 45
x = xo
y = yo
f = .2
col1 = ctx.color(.5, .2, .0)
col2 = ctx.color(.8, 1, .6)
textcol = ctx.color(.3)
ctx.font('Open Sans')
ctx.fontsize(18)
ctx.fill(textcol)
ctx.text('lighten', 85, y + 36)
ctx.text('0.2', x + w + 26, y - 12)
ctx.text('0.4', x + w * 2 + 26, y - 12)
ctx.text('0.6', x + w * 3 + 26, y - 12)
ctx.text('0.8', x + w * 4 + 26, y - 12)
c = col1
ctx.fill(c)
ctx.rect(x, y, w, h)
x += w + padx
c = c.lighten(f)
ctx.fill(c)
ctx.rect(x, y, w, h)
