def Load():
lines = []
zoom = 0
with open("saved.lines", "r") as loadfile:
zoom = eval(loadfile.readline())
for line in loadfile.readlines():
l = eval(line)
# polyline
if type(l) == list:
p = Polyline()
p.load(l)
lines.append(p)
# regular line
else:
lines.append(Drawable(Line, **l))
return zoom, lines
def on_touch_down(self, touch): #defines the starting point of a new line
if self.ui.btnc.state == 'down':
eraser = Drawable(Rectangle, size = self.zoom, pos=(touch.x, touch.y), color = (1, 1, 1, 0.5))
eraser.snap(list(eraser.item.pos), self.zoom, self.lat, self.longit)
eraser.draw(self.canvas)
check_erase(eraser, self.lines, self.zoom, self.lat, self.longit)
self.refresh_screen()
if self.ui.btnline.state == 'down':
self.coord = [[touch.x, touch.y]]
if self.ui.btndraw.state == 'down':
self.polyline = Polyline(self.color)
else: self.coord = []
self.old_x, self.old_y = touch.x, touch.y
class Platform_draw(Widget):
def undo(self, instance): #removes the last line placed and then redraws the screen
self.lines = self.lines[:-1]
self.refresh_screen()
def on_startup(self): #defines everything that needs to be defined before startup
#defines variables to be used
self.lines = []
self.coord = []
# drawn lines is what your fingure is tracing, disappears on touch up
self.drawn_lines = []
self.polyline = None
self.straight_type = 'single'
self.lat = ()
self.longit = ()
self.old_x = self.old_y = 0
self.x = self.y = 0
self.size = (height/12, height/12)
self.colors = color_load()
self.color = self.colors[-1]
self.currentLayer = 0
#refreshes screen ... just lateral lines
self.lat, self.longit, self.lines = set_zoom([], self.zoom)
self.refresh_screen()
def save(self):
Save(self.zoom, self.lines)
def load(self):
self.zoom, self.lines = Load()
self.lat, self.longit, self.lines = set_zoom(self.lines, self.zoom, self.zoom, self.lat, self.longit) # changes the size of all lines
self.coord = []
self.x = self.y = 0
setattr(self.zoom_slider, 'value' ,self.zoom[0])
self.refresh_screen()
def refresh_screen(self):
self.canvas.clear()
#draws grid lines
for x in self.lat:
self.canvas.add(Color(*self.gridColor))
self.canvas.add(Line(points = (x, 0, x, height), width = 1))
for y in self.longit:
self.canvas.add(Color(*self.gridColor))
self.canvas.add(Line(points = (0, y, width, y), width = 1))
#draws lines that the user has drawn
for line in self.lines:
line.draw(self.canvas)
# self.canvas.add(Color(*line[1]))
# self.canvas.add(line[0])
for line in self.drawn_lines:
self.canvas.add(Color(*line[1]))
self.canvas.add(line[0])
with self.canvas:
Color(0.2, 0.2, 0.2)
Rectangle(pos = (0, height-height/12), size = (width, self.size[1]))
if len(self.upper.parent.children) > 0:
if self.upper.btnar.pos[0] == width-self.size[0]*1.5:
Rectangle(pos = (width-self.size[0], 0), size = (self.size[0], height))
def on_touch_down(self, touch): #defines the starting point of a new line
if self.ui.btnc.state == 'down':
eraser = Drawable(Rectangle, size = self.zoom, pos=(touch.x, touch.y), color = (1, 1, 1, 0.5))
eraser.snap(list(eraser.item.pos), self.zoom, self.lat, self.longit)
eraser.draw(self.canvas)
check_erase(eraser, self.lines, self.zoom, self.lat, self.longit)
self.refresh_screen()
if self.ui.btnline.state == 'down':
self.coord = [[touch.x, touch.y]]
if self.ui.btndraw.state == 'down':
self.polyline = Polyline(self.color)
else: self.coord = []
self.old_x, self.old_y = touch.x, touch.y
def on_touch_up(self, touch):
if self.x == 0 or self.y == 0 or [0, 0] in self.coord:
self.x, self.y = touch.x, touch.y #sets the start point of line
if self.coord and self.ui.btnline.state == 'down' and self.straight_type == 'single' and touch.y < height-height/12:
self.coord.append([touch.x, touch.y]) #defines end point of new line
line = Drawable(Line, color = self.color, points = (self.coord[0][0], self.coord[0][1], self.coord[1][0], self.coord[1][1]), width = 2)
if not line.snap(self.coord, self.zoom, self.lat, self.longit):
return
if not line in self.lines:
self.lines.append(line)
self.coord = []
self.refresh_screen()
if self.ui.btndraw.state == 'down' and self.polyline != None:
self.lines.append(self.polyline)
self.polyline = None
self.coord = []
self.drawn_lines = []
self.refresh_screen()
self.old_x, self.old_y = touch.x, touch.y
self.x = self.y = 0 # resets variables for finger lines
def on_touch_move(self, touch):
if self.x == 0 or self.y == 0 or [0, 0] in self.coord:
self.x, self.y = touch.x, touch.y #sets the start point of line
if self.ui.btnc.state == 'down':
self.refresh_screen()
eraser = Drawable(Rectangle, size = self.zoom, pos=(touch.x, touch.y), color = (1, 1, 1, 0.5))
eraser.snap(list(eraser.item.pos), self.zoom, self.lat, self.longit)
eraser.draw(self.canvas)
check_erase(eraser, self.lines, self.zoom, self.lat, self.longit)
if self.ui.btnline.state == 'down' or self.ui.btndraw.state == 'down' and touch.y < height-height/12:
if not self.coord:
self.coord = [[touch.x, touch.y]] #used as a start point if finger just entered screen
self.refresh_screen()
self.canvas.add(Color(*self.color))
coord_temp = [[self.x, self.y], [touch.x, touch.y]]
if self.straight_type == 'single' and self.ui.btnline.state == 'down':
coord_temp[0] = self.coord[0]
line = Drawable(Line, color = self.color, points = (coord_temp[0][0], coord_temp[0][1], coord_temp[1][0], coord_temp[1][1]), width = 1)
line.snap(coord_temp, self.zoom, self.lat, self.longit)
line.draw(self.canvas)
elif self.ui.btnline.state == 'down':
if self.x == 0 or self.y == 0 or [0, 0] in self.coord:
self.x, self.y = touch.x, touch.y #sets the start point of line
return
line = Drawable(Line, color = self.color, points = (coord_temp[0][0], coord_temp[0][1], coord_temp[1][0], coord_temp[1][1]), width = 2)
if not line.snap(coord_temp, self.zoom, self.lat, self.longit):
return
if not line in self.lines:
self.lines.append(line)
if self.ui.btndraw.state == 'down' and self.polyline != None:
self.polyline.add_line(coord_temp[0][0], coord_temp[0][1], coord_temp[1][0], coord_temp[1][1])
self.drawn_lines.append([Line(points = (coord_temp[0][0], coord_temp[0][1], coord_temp[1][0], coord_temp[1][1])), self.color])
self.x, self.y = touch.x, touch.y #updates points
if self.ui.btnm.state == 'down':
if touch.x > width - height/12 or touch.y > height-height/12:
return
movex = touch.x - self.old_x
movey = touch.y - self.old_y
for line in self.lines:
line.move(movex, movey)
for line in range(len(self.drawn_lines)):
points = (self.drawn_lines[line][0].points[0] + movex, self.drawn_lines[line][0].points[1] + movey, self.drawn_lines[line][0].points[2] + movex, self.drawn_lines[line][0].points[3] + movey)
self.drawn_lines[line][0] = Line(points = points, width = 1)
for line in range(len(self.lat)):
self.lat[line] += movex
for line in range(len(self.longit)):
self.longit[line] += movey
self.refresh_screen()
self.old_x, self.old_y = touch.x, touch.y
# ensures that their are always grid lines on the screen
while min(*self.lat) < 0:
self.lat[self.lat.index(min(*self.lat))] = max(*self.lat) + self.zoom[0]
while max(*self.lat) > width:
self.lat[self.lat.index(max(*self.lat))] = min(*self.lat) - self.zoom[0]
while min(*self.longit) < 0:
self.longit[self.longit.index(min(*self.longit))] = max(*self.longit) + self.zoom[0]
while max(*self.longit) > height:
self.longit[self.longit.index(max(*self.longit))] = min(*self.longit) - self.zoom[0]
