def main():
data = Data(-3, 3, -1, 10)
fmm = FrameManager()
frm_x2 = fmm.create(0.0, 0.0, 2, 4, data)
gbbox = fmm.get_gbbox()
dev_wmf = DeviceWindowsMetafile("patlin.wmf", gbbox)
dev_wmf.set_device(frm_x2)
test(dev_wmf)
dev_wmf.close()
dev_img = DeviceCairo("patlin.png", gbbox, dpi)
dev_img.fill_white()
dev_img.set_plot(frm_x2)
test(dev_img)
dev_img.close()
def main():
from vgl import color, BBox, Frame, FrameManager, Data
from vgl import DeviceWindowsMetafile, DeviceCairo
#from vgl import drawfrm, symbol, drawtick, drawaxis, drawlabel
data = Data(-3, 3, -1, 10)
fmm = FrameManager()
frm_x2 = fmm.create(0.0, 0.0, 4, 4, data)
gbbox = fmm.get_gbbox()
dev_img = DeviceCairo("patlin.png", gbbox, 100)
dev_img.fill_white()
dev_img.set_plot(frm_x2)
test(dev_img)
dev_img.close()
dev_wmf = DeviceWindowsMetafile("patlin.wmf", gbbox)
dev_wmf.set_device(frm_x2)
test(dev_wmf)
dev_wmf.close()
def get_center(a, b):
return (a + b) * 0.5
def get_half(min, max):
return (max - min) * 0.5
xmin = np.min(geom[:, :, 0])
xmax = np.max(geom[:, :, 0])
ymin = np.min(geom[:, :, 1])
ymax = np.max(geom[:, :, 1])
data = Data(xmin, xmax, ymin, ymax, zmin, zmax)
fmm = FrameManager()
frm = fmm.create(0, 0, 5, 5, data)
mesh = mesh3d.SquareMesh3d(geom.shape[0], geom.shape[1])
mesh.create_node(geom)
mesh.create_mesh()
mesh.create_axis((0, 0, 0), get_half(xmin, xmax), get_half(ymin, ymax),
get_half(zmin, zmax))
mesh.set_show_axis(True)
v3d = view3d.View3d(frm)
running = True
old_pos = (0, 0)
new_pos = (0, 0)
m_xRotate = 0
from vgl import color, BBox, Frame, FrameManager, Data, symbol
from vgl import DeviceCairo
import coltbl
from math import sin, cos
data = Data(0, 1, 0, 1)
fmm = FrameManager()
frm = fmm.create(0, 0, 4, 4, data)
def julia(dev):
global wid, hgt
zoom = 1
moveX = 0
moveY = 0
maxIterations = 300
# pick some values for the constant c,
# this determines the shape of the Julia Set
cRe = -0.7
cIm = 0.27015
#loop through every pixel
for x in range(wid):
for y in range(hgt):
# calculate the initial real and imaginary part of z,
# based on the pixel location and zoom
# and position values
newRe = 1.5 * (x - wid / 2) / (0.5 * zoom * wid) + moveX
newIm = (y - hgt / 2) / (0.5 * zoom * hgt) + moveY
# ex_polygon.py
#
# Ref: Math Adventures with Python by Peter Farell
#
import pygame
from pygame.locals import *
import numpy as np
from vgl import Frame, FrameManager, Data
from vgl import DevicePygame, DeviceWindowsMetafile
from vgl import drawfrm, color, symbol, geom
from vgl.device import DeviceAggdraw
data = Data(-10, 10, -10, 10)
fmm = FrameManager()
frm = fmm.create(0.0, 0.0, 4, 4, data)
plist = []
def create_polygon_list():
side = 1.7
jump = 2.2 * side
sx = -5.6
sy = 5.6
j = 0
i = 1
y = sy
nstart = 3
nend = 19
step = 170 / (nend - nstart)
for n in range(nstart, nend, 1):
# ex plot x**2, x**3 import pygame from pygame.locals import * import numpy as np from vgl import color, geom, BBox, Frame, FrameManager, Data from vgl import DeviceWindowsMetafile, DevicePygame, DeviceAggdraw, DeviceCairo from vgl import drawfrm, symbol, drawtick, drawaxis, drawlabel x = np.arange(-3,3.2,0.2) y2 = x**2 #y3 = x**2+3*np.sin(x) y3 = x**3 data = Data(-6,6,-2,10) fmm = FrameManager() frm_x2 = fmm.create(0.0,0.0,3,3, data) frm_x3 = fmm.create(3.2,3.4,3,3, data) frm_x4 = fmm.create(0.0,3.2,3,2, Data(-4,4,-3,3)) def plot_x2(dev): drawaxis.draw_axis(dev) drawtick.draw_tick_2d(dev) drawlabel.draw_label_2d(dev) dev.polyline(x, y2, color.BLUE, 0.003*dev.frm.hgt()) sym = symbol.Circle(0.01, dev.frm.hgt()) dev.begin_symbol(sym) for i in range(0,x.size): dev.symbol(x[i],y2[i],sym) dev.end_symbol()
from vgl import DeviceCairo, DeviceCairoAnimation from vgl import drawfrm, symbol dtheta = 0.05 theta = 0 r1 = 3 r2 = 0.2 sint_trail_xpos = 4 sine_trail=[] sine_plot_range= 8 max_sine_freq=1 # 2 Hz max_theta = 2*np.pi*max_sine_freq max_sine_points=int(max_theta/dtheta) sine_plot_xratio = float(sine_plot_range)/float(max_sine_points) data = Data(-5,15,-10,10) fmm = FrameManager() frm = fmm.create(0.0,0.0,5,5, data) gbox = fmm.get_gbbox() sym = symbol.Gradient(0.04, frm.hgt()) def sine_wave(t): global theta, sine_trail, sine_plot_xratio, max_sine_points, dev dev.fill_white() drawfrm.draw_frame(dev,frm) drawfrm.draw_axis(dev, data) drawfrm.draw_grid(dev, data, 1) thk=0.001*dev.frm.hgt() x1 = r1*np.cos(theta)
# ex_x3.py
import numpy as np
from vgl import color, geom, BBox, Frame, FrameManager, Data
from vgl import DeviceWindowsMetafile, DevicePygame, DeviceAggdraw, DeviceCairo
from vgl import drawfrm, symbol, drawtick, drawaxis, drawlabel
x = np.arange(-3, 3, 0.2)
y = x**3
data = Data(-3, 3, -1, 10)
fmm = FrameManager()
fmm.create(0, 0, 3, 3, data)
frm = fmm.create(0, 3.4, 3, 3, data)
dev = DeviceWindowsMetafile('x3.wmf', fmm.get_gbbox())
dev.set_device(frm)
drawfrm.draw_frame(dev, frm)
clip = dev.frm.get_clip()
dev.create_clip(clip[0], clip[1], clip[2], clip[3])
dev.polyline(x, y, color.BLUE, 0.001 * frm.hgt())
dev.delete_clip()
dev.close()
from vgl import color, BBox, Frame, FrameManager, Data, symbol from vgl import DeviceWindowsMetafile, DeviceCairo, DeviceCairoAnimation import coltbl from math import sin, cos import random from moviepy.editor import * xwid,xhgt=300,300 data = Data(0,xwid,0,xhgt) fmm = FrameManager() frm_x2 = fmm.create(0,0,4,4, data) clips = [] def rand_tree(dev, order, length, angle): global posx, posy, ctbl, dlength, prv_posx, prv_posy, dev_ani, movie dx = length*sin(angle); dy = length*cos(angle); scale = random.random() turnl = random.random() turnr = random.random() prv_posx = posx prv_posy = posy posx -= dx; posy += dy; dev.line(prv_posx, prv_posy, posx, posy, ctbl[int(length-1)], length*dlength*0.04*dev.frm.hgt()) if length <= 10: