Super, thank you

Thx cvp but I don’t know how to download a module into Pythonista

Whao, I’m impressed, thank you!
But I don’t understand why it doesn’t work in my last example

My last issue is that the drawing doesn’t refresh even when I call explicitly drawTest() as you can see in the example below:

import ui

class my(ui.View):
    
    def __init__(self, *args, **kwargs):
        self.factor = .5

    def draw(self):
        print('draw()')
        self.drawTest()

    def drawTest(self):
        print('drawTest()')
        print('%.1f' % (self.factor))
        w,h = ui.get_screen_size()
        path1 = ui.Path()
        path1.line_width = 3
        ui.set_color('red')
        path1.move_to(100*self.factor,100*self.factor)
        path1.line_to(200*self.factor,100*self.factor)
        path1.line_to(100*self.factor,200*self.factor)
        path1.close()
        path1.fill()
        path2 = ui.Path()#.rect(0,0,w,h)
        path2.line_width = 3
        ui.set_color('blue')
        path2.move_to(300*self.factor,100*self.factor)
        path2.line_to(400*self.factor,100*self.factor)
        path2.line_to(300*self.factor,200*self.factor)
        path2.close()
        path2.fill()
        
    def touch_began(self, touch):
        print('touch_began()')
        self.factor += .5
        self.drawTest()
        
    def will_close(self):
        print('will_close()')
        
v = my()
v.present('fullscreen',hide_title_bar=True)

It redraws only when I turn the iPad, could you please tell me how I can force the refresh with the right zoom factor?

Thx to both of you, concerning the gestures, it seems to be a little bit complicated but I will try

... and then, I need to redraw in order to see the polygons in a different zoom factor. As I wrote, I already tried with ui but I stoped because I could not redraw, that’s why I tried with scene

Yes thx it works but it doesn’t with several polygons

I just want to draw a filled polygone following numerous coordinates, I already managed to do it with ui and canvas but only scene gives me the possibility to use full screen

Hi Mikael, thx for replying but is there a way to avoid this?

Hi, looking back to this example, I tried to play a bit and discovered what seems to be an issue:

from scene import *
import time
class MyScene (Scene):
    def setup(self):
        sx, sy = self.size.w, self.size.h
        self.red = ShapeNode(ui.Path.rect(0,0,sx,sy),parent=self,fill_color='red',position=(0,0),anchor_point=(0,0))
        path = ui.Path()
        path.line_width = 3
        path.move_to(0,0)
        path.line_to(100,0)
        #path.line_to(0,100) # Uncommenting this line modifies the drawing of both previous lines
        self.cyan = ShapeNode(path,parent=self.red,stroke_color='white',position=(0,0),anchor_point=(0,0))
if __name__ == '__main__':
    run(MyScene())

Removing the comment modifies how both previous lines are drawn!
I tried to understand but it is still unclear for me