def draw_grid(min_x, max_x, min_y, max_y): w, h = canvas.get_size() scale_x = w / (max_x - min_x) scale_y = h / (max_y - min_y) min_x, max_x = round(min_x), round(max_x) min_y, max_y = round(min_y), round(max_y) canvas.begin_updates() canvas.set_line_width(1) canvas.set_stroke_color(0.7, 0.7, 0.7) #Draw vertical grid lines: x = min_x while x <= max_x: if x != 0: draw_x = round(w / 2 + x * scale_x) + 0.5 canvas.draw_line(draw_x, 0, draw_x, h) x += 0.5 #Draw horizontal grid lines: y = min_y while y <= max_y: if y != 0: draw_y = round(h/2 + y * scale_y) + 0.5 canvas.draw_line(0, draw_y, w, draw_y) y += 0.5 #Draw x and y axis: canvas.set_stroke_color(0, 0, 0) canvas.draw_line(0, h/2, w, h/2) canvas.draw_line(w/2, 0, w/2, h) canvas.end_updates()
def draw_grid():
console.clear()
canvas.set_size(size_x, size_y)
canvas.begin_updates()
canvas.set_line_width(1)
canvas.set_stroke_color(0.7, 0.7, 0.7)
#Draw vertical grid lines:
x = grid
while x <= max(abs(min_x), abs(max_x)):
cx = t_c_x(x)
if cx > 0 and cx < size_x:
canvas.draw_line(cx, 0, cx, size_y)
cx = t_c_x(-x)
if cx > 0 and cx < size_x:
canvas.draw_line(cx, 0, cx, size_y)
x += grid
y = grid
while y <= max(abs(min_y), abs(max_y)):
cy = t_c_y(y)
if cy > 0 and cy < size_y:
canvas.draw_line(0, cy, size_x, cy)
cy = t_c_y(-y)
if cy > 0 and cy < size_y:
canvas.draw_line(0, cy, size_x, cy)
y += grid
canvas.set_stroke_color(0, 0, 0)
cx = t_c_x(0)
if cx > 0 and cx < size_x:
canvas.draw_line(cx, 0, cx, size_y)
cy = t_c_y(0)
if cy > 0 and cy < size_y:
canvas.draw_line(0, cy, size_x, cy)
canvas.end_updates()
import canvas
import random
import math
from urbanape import common_devices
from kuler import *
random.seed()
width, height = common_devices['ipad_r']
circle_size = 192.0
step = math.sqrt(circle_size**2 - (circle_size / 2.0)**2)
palette = let_the_rays_fall_on_the_earth
canvas.begin_updates()
canvas.set_size(width, height)
canvas.set_fill_color(*random.choice(palette))
canvas.fill_rect(0, 0, width, height)
for x in range(100):
r, g, b = random.choice(palette)
a = random.random() * 0.5 + 0.25
canvas.set_fill_color(r, g, b, a)
origin_x = random.random() * width
origin_y = random.random() * height
csize = random.random() * (width / 8.0) + (width / 16.0)
canvas.fill_ellipse(origin_x, origin_y, csize, csize)
import canvas import random import math from urbanape import common_devices from kuler import * random.seed() width, height = common_devices['ipad_r'] palette = robots_are_cool canvas.begin_updates() canvas.set_size(width, height) canvas.set_fill_color(*palette['darkest']) canvas.fill_rect(0, 0, width, height) canvas.set_fill_color(*random.choice(palette['palette'])) canvas.set_stroke_color(*palette['lightest']) start_x, start_y = (width / 2.0, height / 2.0) lollipop_points = [] for x in xrange(64): end_x, end_y = (random.random() * (width * 0.8) + (width * 0.1), random.random() * (height * 0.8) + (height * 0.1)) lollipop_points.append((end_x, end_y)) canvas.set_line_width(random.random() * 0.75 + 0.25) canvas.draw_line(start_x, start_y, end_x, end_y) for x in xrange(64):
def record_drawing(self):
canvas.begin_updates()
def paint(self, width, height):
# start with unit diagonal
self.unit_diagonal(self.view_tm)
# rotate object
self.rotx(self.xinc, self.rotx_tm)
self.am4x4(self.view_tm, self.rotx_tm, self.view_tm)
self.roty(self.yinc, self.roty_tm)
self.am4x4(self.view_tm, self.roty_tm, self.view_tm)
self.rotz(self.zinc, self.rotz_tm)
self.am4x4(self.view_tm, self.rotz_tm, self.view_tm)
# scale
self.scaleit(self.scale, self.scale, self.scale, self.scale_tm)
self.am4x4(self.view_tm, self.scale_tm, self.view_tm)
# move coordinates to origin
self.trans(-self.xe, -self.ye, -self.ze, self.trans_tm)
self.am4x4(self.view_tm, self.trans_tm, self.view_tm)
# rotate -90 deg. about x axis
self.rotx(1.5708, self.rotx_tm)
self.am4x4(self.view_tm, self.rotx_tm, self.view_tm)
# rotate -theta about y axis
theta = math.atan2(-(self.xe - self.xt), -(self.ye - self.yt))
self.roty(-theta, self.roty_tm)
self.am4x4(self.view_tm, self.roty_tm, self.view_tm)
# rotate -phi around x axis
phi = math.atan2((self.ze - self.zt),
math.sqrt((self.xe - self.xt) * (self.xe - self.xt) +
(self.ye - self.yt) * (self.ye - self.yt)))
self.rotx(-phi, self.rotx_tm)
self.am4x4(self.view_tm, self.rotx_tm, self.view_tm)
# change rh to lh coordinates
self.scaleit(1, -1, -1, self.scale_tm)
self.am4x4(self.view_tm, self.scale_tm, self.view_tm)
# add perspective
if self.persp:
self.perspect(self.s, self.d, self.persp_tm)
self.am4x4(self.view_tm, self.persp_tm, self.view_tm)
# transform the view
self.am20x4(self.view_tm, self.view)
# draw the view in width/height
orgx = width / 2
orgy = height / 2
if self.persp:
for i in range(self.vertnum):
self.view[i][0] = (orgx * self.view[i][0] /
self.view[i][2]) + orgx
self.view[i][1] = (orgy * self.view[i][1] /
self.view[i][2]) + orgy
canvas.begin_updates()
canvas.set_size(width, height)
canvas.set_stroke_color(0, 1, 0)
for i in range(self.facenum):
for j in range(self.edgenum[i] - 1):
canvas.draw_line(self.view[self.face[i][j]][0],
self.view[self.face[i][j]][1],
self.view[self.face[i][j + 1]][0],
self.view[self.face[i][j + 1]][1])
canvas.draw_line(self.view[self.face[i][j + 1]][0],
self.view[self.face[i][j + 1]][1],
self.view[self.face[i][0]][0],
self.view[self.face[i][0]][1])
canvas.set_fill_color(0, 1, 0)
self.frames += 1
canvas.draw_text(
'Object: ' + self.name + ' Frames: ' + str(self.frames) +
' Angle: ' + str(self.yinc), 10, 10)
canvas.end_updates()
