A, turtle form layout drawing (using the minimum unit is a pixel in the window)
With turtle.setup (width, height, startx, starty) function sets the startup form position and size parameters not write, the default window in the middle of the screen. Turtle.setup () is not necessary, only in writing when the program needs to control the size of the form, only need to use this function.
Brush Control Function two turtle
1 turtle.penup () picked his brushes, not to draw graphics
turtle.pendown () brush down, he began to draw graphics appear generally penup paired with pendown
2 turtle.pensize (width) to set the width of the brush
3 turtle.pencolor (color) color pen set where parameter may be a string or rgb color value, color table as common rgb
4, filled function
Fill color setting: turtle.fillcolor (color)
Begins to fill: turtle.begin_fill ()
End filling: turtle.end_fill ()
5, turtle.hideturtle () hides the shape of the brush turtle
turtle.showturtle () show the shape of the brush turtle
6 turtle.speed (speed) setting the moving speed of the brush speed range [0,10] integer, the larger the number, the faster
Three, turtle motion control function
turtle.forward (distance) in the forward direction before the brush, alias turtle.fd (d), d may be negative in this case, retrogression turtle.circle (r, extent) plotted according to the curvature radius r extentFour, turtle direction control function: only change the direction of travel of sea turtles turtle.seth (angle) to set the current angle towards an angle turtle.right (angle) Rotate Right turtles turtle.left (angle) Rotate left returnees turtle.goto (x, y) coordinates of the pen is moved to (x, y) position