@JonB This is the link to my github code, sorry it's very messy:
The .xlsx file in the repository contains the point coordinates for the shape and is redrawn in lines 474-489.
Latest posts made by HT
RE: Make drawing only possible on top of old path
I tried something similar with changing the image to a numpy pixel array and the checking the touched pixel and its surroundings. Unfortunately this turned out to not work that great, since it didn't paint all the surrounding pixels, especially when it searched a large area. When I try Image.getpixel I get the error "'module' object has no attribute 'getpixel'.
Any ideas how else I might accomplish this?
Here is the code of my attempt with the numpy array:
def touch_began(self,touch): self.x1, self.y1 = touch.location x = int(self.x1) y = int(self.y1) x = x * 2 y = y * 2 if pix[y,x] < 255: self.drawDot(touch.location,self.dotSize) self.check_area(touch.location, 15) return def check_area(self, t, size): # Checks area around touch for dark pixels and paints them red self.x1, self.y1 = t x = int(self.x1) y = int(self.y1) x = x * 2 y = y * 2 ptsx =  ptsy =  thresh = 120 for xx in range(size): print('x: '+str(xx)) for yy in range(size): print('y: '+str(yy)) xn = 0 yn = 0 if pix[y + yy, x + xx] < thresh: xn = (x + xx) * 0.5 yn = (y + yy) * 0.5 # print(xn) xn = math.ceil(xn) # print(xn) yn = math.ceil(yn) ptsx.append(xn) ptsy.append(yn) if pix[y - yy, x - xx] < thresh: xn = (x - xx) * 0.5 yn = (y - yy) * 0.5 xn = math.ceil(xn) yn = math.ceil(yn) ptsx.append(xn) ptsy.append(yn) if pix[y + yy, x - xx] < thresh: xn = (x - xx) * 0.5 yn = (y + yy) * 0.5 xn = math.ceil(xn) yn = math.ceil(yn) ptsx.append(xn) ptsy.append(yn) if pix[y - yy, x + xx] < thresh: xn = (x + xx) * 0.5 yn = (y - yy) * 0.5 xn = math.ceil(xn) yn = math.ceil(yn) # self.drawDotCoords(xn,yn,self.dotSize) ptsx.append(xn) ptsy.append(yn) # if xn != 0: # ptsx.append(xn) # ptsy.append(yn) if len(ptsx) > 0: self.drawDotCoords(ptsx,ptsy,self.dotSize) # Draws a one-pixel dot on each surrounding dark pixel
Make drawing only possible on top of old path
In my app, a shape is drawn consisting of many points, which are drawn with a ui.Path, somewhat like this:
for i in range(1,len(self.points)): x1 = self.points[i].x y1 = self.points[i].y x2 = self.points[i + 1].x y2 = self.points[i + 1].y self.path.move_to(x1, y1) self.path.line_to(x2, y2) self.set_needs_display()
After this is done I would like to be able to draw on top of that shape with a different color and only on that shape. I basically want to be able to recolor parts of the path.
I was thinking that using add_clip() could be used on the path that drew the shape, constricting new drawing operations to the shape. Unfortunately I have not been able to make add_clip work.
Does my approach make sense? If so, where would I use add_clip?
Creating touch location variables
I would like to initialize a variable that functions just like the one you get from touch.location (e.g. you can access the x coordinate with touch.location.x).
If i initialize the variable like this
x = [150, 200]
it will not work with functions that only work with touch.locations.
How can I create variables like this programmatically?
RE: Best method to transfer data to PC
Unfortunately I don't have access to a sftp server. I've got this part of the code, which sends me a mail. I just can't get it to attach the image to the mail:
image = photos.save_image(img) to = 'receiver' subject = 'data' gmail_pwd = 'password' gmail_user = 'sender' attachment = self.table print('Connecting...') smtpserver = smtplib.SMTP("smtp.gmail.com", 587) console.show_activity() smtpserver.ehlo() smtpserver.starttls()
smtpserver.ehlo smtpserver.login(gmail_user, gmail_pwd) # print('Preparing message...') outer = MIMEMultipart() outer['Subject'] = subject outer['To'] = to outer['From'] = gmail_user outer.preamble = 'You will not see this in a MIME-aware email reader.\n' attachment = get_attachment(image) outer.attach(attachment) composed = outer.as_string() print('Sending...') smtpserver.sendmail(gmail_user, to, composed) smtpserver.close() console.hide_activity() print('Done.')
It prints out "Get_attachment is not defined"
RE: Undo last line drawn
The problem I'm having now is that pythonista crashes if the array of points gets too long (I add the touch locations during touch_moved). It happens pretty fast when I'm drawing freely. Unfortunately there is no error message. Has anyone come across this problem?