def makeImage(height, width, imageName):
k = 4
numSamples = 100000000
imageWidth = min(width, height)
imageHeight = max(width, height)
data = [0] * imageHeight * imageWidth
cx = imageWidth / 2
cy = imageHeight / 2
radius = imageWidth / 2 * .85
for i in range(numSamples):
theta = uniform(0, 2 * pi)
pA_x, pA_y = rose(theta, radius, 4, cx, cy)
pB_x, pB_y = rose(k * theta, radius, 4, cx, cy)
# pick a random point on the line segment [pA, pB]
r = uniform(0, 1)
pC_x = (1 - r) * pA_x + r * pB_x
pC_y = (1 - r) * pA_y + r * pB_y
i = int(pC_x + .5)
j = int(pC_y + .5)
data[j * imageWidth + i] += 1
saveImage(data, imageName, imageWidth, imageHeight, fg=[128, 0, 64])
def makeImage(height, width, imageName):
imageWidth = min(width, height)
imageHeight = max(width, height)
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, imageWidth, imageHeight)
ctx = cairo.Context(surface)
ctx.set_tolerance(.1)
ctx.set_antialias(False)
cx = imageWidth / 2
cy = imageHeight / 2
radius = imageWidth / 2 * .95
# background
ctx.set_source_rgb(1, 1, 1)
ctx.rectangle(0, 0, imageWidth, imageHeight)
ctx.fill()
ctx.stroke()
# lines
ctx.set_line_width(STROKE)
ctx.set_source_rgb(0, 0, 0)
N = 360
for d in range(8 * N):
theta = d * 2 * pi / N
x, y = rose(theta, radius, 2 / 5, cx, cy)
if d == 0:
ctx.move_to(x, y)
else:
ctx.line_to(x, y)
ctx.stroke()
surface.write_to_png(imageName)
def makeImage(height, width, imageName):
kA = 4
kB = 3
numSamples = 100000000
imageWidth = width
imageHeight = height
data = [0] * imageHeight * imageWidth
cx = imageWidth / 2
cy = imageHeight / 2
radius = imageWidth / 2 * .95
radius2 = radius * .9
for i in range(numSamples):
theta = uniform(0, 32 * pi)
pA_x, pA_y = rose(kA * theta, radius, 4 / 5, cx, cy)
pB_x, pB_y = rose(kB * theta, radius2, 2 / 5, cx, cy)
# pick a random point on the line segment [pA, pB]
r = uniform(0, 1)
pC_x = (1 - r) * pA_x + r * pB_x
pC_y = (1 - r) * pA_y + r * pB_y
i = int(pC_x + .5)
j = int(pC_y + .5)
data[j * imageWidth + i] += 1
saveImage(data,
imageName,
imageWidth,
imageHeight,
bg=[255, 255, 255],
fg=[96, 43, 25],
alphaMultiplier=5)
def makeImage(height, width, imageName):
k = 4
numSamples = 100000000
imageWidth = min(width, height)
imageHeight = max(width, height)
data = [0] * imageHeight * imageWidth
cx = imageWidth / 2
cy = imageHeight / 2
radius = imageWidth / 2 * .95
for i in range(numSamples):
# need to increase range for complete curve
theta = uniform(0, 10 * pi)
pA_x, pA_y = rose(theta, radius, .4, cx, cy)
pB_x, pB_y = rose(k * theta, radius, .4, cx, cy)
# pick a random point on the line segment [pA, pB]
r = uniform(0, 1)
pC_x = (1 - r) * pA_x + r * pB_x
pC_y = (1 - r) * pA_y + r * pB_y
i = int(pC_x + .5)
j = int(pC_y + .5)
data[j * imageWidth + i] += 1
saveImage(data,
imageName,
imageWidth,
imageHeight,
bg=[255, 255, 255],
fg=[0, 128, 64],
alphaMultiplier=20)
def makeImage(height, width, imageName):
kA = 1
kB = 2
numSamples = 100000000
imageWidth = min(width, height)
imageHeight = max(width, height)
data = [0] * imageHeight * imageWidth
cx = imageWidth / 2
cy = imageHeight / 2
radius = imageWidth / 2 * .85
for i in range(numSamples):
# Note: using 10 * pi. If only 2 * pi, whole image is not drawn
theta = uniform(0, 10 * pi)
pA_x, pA_y = rose(kA * theta, radius * .9, 1.2, cx, cy)
pB_x, pB_y = circle(kB * theta, radius, cx, cy)
# pick a random point on the line segment [pA, pB]
r = uniform(0, 1)
pC_x = (1 - r) * pA_x + r * pB_x
pC_y = (1 - r) * pA_y + r * pB_y
i = int(pC_x + .5)
j = int(pC_y + .5)
data[j * imageWidth + i] += 1
saveImage(data,
imageName,
imageWidth,
imageHeight,
fg=[0, 128, 128],
alphaMultiplier=6)