[RESOLVED] Rotating a quad() towards player(that moves around)

Processing.py
1 
    def AI(self,plx,ply): #traslates 
        angle1 = atan2(ply - self.y1,plx - self.x1)
        self.x1 = cos(angle1) * self.speed + self.x1
        self.y1 = sin(angle1) * self.speed + self.y1    
        self.x2 = cos(angle1) * self.speed + self.x2
        self.y2 = sin(angle1) * self.speed + self.y2   
        self.x3 = cos(angle1) * self.speed + self.x3
        self.y3 = sin(angle1) * self.speed + self.y3  
        self.x4 = cos(angle1) * self.speed + self.x4
        self.y4 = sin(angle1) * self.speed + self.y4    
        
    def show(self):
        stroke(0)
        strokeWeight(1)
        fill(255,0,0)
        beginShape()
        vertex(self.x1,self.y1)
        vertex(self.x2,self.y2)
        vertex (self.x3,self.y3)
        vertex(self.x4,self.y4)
        endShape()
        #ellipse(self.x,self.y,self.r,self.r)

I need to rotate the first vertex of this quad (the same above) towards the player:

    beginShape()
    vertex(40,40)
    vertex(50,60)
    vertex (20,30)
    vertex(70,40)
    endShape()

I tried with rotate(), but actually it rotates all of the things in my scene (it was funny at least)
(Im sure that I am missing some moving objects on a plain foundamentals too, bc actaully I am at 11th grade and I have never done this kind of things at school)

2

Py.Processing.org/reference/pushMatrix.html

3

@GoToLoop
My fear became true, I have to use Matrix funcs, wich I didnt copletely understodd. :frowning:
I already tried with pushMatrix() -> rotate() -> i show quad -> popMatrix()
Is there any vid/guide where to these things are explained?

4

Py.Processing.org/tutorials/transform2d/

1 Like
5

@GoToLoop
I love you man!
(Love in a friendly way :slight_smile: )