import tempfile
from benu.benu import Canvas
from benu.utils import set_foregroundcolor, set_backgroundcolor
import tempfile
tmp_fname = tempfile.mktemp('.png')
canv = Canvas(tmp_fname,500,500)
device_rect = (100,100,300,300)
ux0 = 0
uy0 = 0
uw = 50
uh = 50
ux1 = ux0+uw
uy1 = uy0+uh
user_rect = (ux0,uy0,uw,uh)
#transform = 'rot 10'
transform = 'rot -45'
#transform = 'orig'
pts = [ (0,0),
(5,5),
(30,30),
(45,45),
(1,3),
(6,2),
]
# test the with statement using as
with canv.set_user_coords(device_rect, user_rect,
transform=transform) as canv2:
device_y0 = MARGIN,
device_y1 = TARGET_OUT_H-MARGIN
)
panels["plot"] = dict(
width = 500,
height = 400,
device_x0 = 0.5*TARGET_OUT_W + MARGIN//2,
device_x1 = 1.0*TARGET_OUT_W - MARGIN//2,
device_y0 = MARGIN,
device_y1 = TARGET_OUT_H-MARGIN
)
actual_out_w, actual_out_h = negotiate_panel_size(panels)
tmp_fname = tempfile.mktemp('.png')
canv = Canvas(tmp_fname,actual_out_w,actual_out_h)
canv.poly([0,0,actual_out_w,actual_out_w,0],[0,actual_out_h,actual_out_h,0,0], color_rgba=(0,0,0,1))
#big lena
p = panels["lena"]
device_rect,user_rect = get_panel_rects(p)
with canv.set_user_coords(device_rect, user_rect):
canv.imshow(lena, 0,0, filter='best' )
#in pixel coordinates!
xpx = np.arange(50,150)
ypx = (np.sin(xpx)*100) + 150
canv.plot(xpx,ypx, color_rgba=(1,0,0,1))
#draw 1/4 size lena in bottom left
device_rect = (
0,
import tempfile
import random
import matplotlib.pyplot as plt
from benu.benu import Canvas
OUTER = 500
#---------
cm = plt.get_cmap('jet')
outer = OUTER
tmp_fname = tempfile.mktemp('.png')
canv = Canvas(tmp_fname, OUTER, OUTER)
while outer > 10:
device_rect = (0,0,outer,outer)
user_rect = (0,0,outer,outer)
with canv.set_user_coords(device_rect, user_rect):
canv.poly([0,0,outer,outer,0],
[0,outer,outer,0,0],
color_rgba=cm(random.randrange(0,cm.N))
)
outer = outer // 2
canv.save()
print tmp_fname
import tempfile
from benu.benu import Canvas
from benu.utils import set_foregroundcolor, set_backgroundcolor
tmp_fname = tempfile.mktemp('.png')
canv = Canvas(tmp_fname,500,500)
with canv.get_figure(500,500) as fig:
ax = fig.add_subplot(111)
ax.plot( [5,7,10], [5,7,10], 'r-' )
ax.set_xlabel('Xlabel')
ax.set_ylabel('Ylabel')
fig.patch.set_facecolor('none')
canv.save()
print tmp_fname
