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]
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