![]() ![]() V = float (th )/w + 0.Features advanced pythonic MVC controls (ListView, GridView, TreeView) using list- and dict-like objects masked and date picker controls common dialogs fluid layout using sizers & basic HTML simplified event model (similar to JavaScript). N /= float (fib (f +2 ) ) return n*fib (f +1 ), n*fib (f )Ĭolored rectangles proportioned with the golden ratio:ī3, b4 = goldenratio (b1 ) fill ( 0, b1/ 2, b1 ) rect ( 0, 0, w1, h1 ) fill ( 0, b2/ 2, b2 ) rect (w1, 0, w2, h1 ) fill ( 0, b4/ 2, b4 ) rect ( 0, h1, w1+w2, h2 )īh = 0 # bottom height for i in range ( 10 ): # Returns two proportional numbers whose sum is n. If n = 0: return 0 if n = 1: return 1 if n >= 2: return fib (n -1 ) + fib (n -2 ) def goldenratio (n, f= 4 ): The great thing about it is that it can be expressed as a mathematical series (Fibonacci sequence). It has been around in aesthetics for a long long time. Another interesting proportional principle is the golden ratio, the 3-5-8 rule. ![]() Sine waves for example are great to describe motion because they ease in and out. Sometimes you want to give a position and/or size to objects in such a way that they interrelate to each other, that there is some kind of ordering or harmony between them. y ) transform (CORNER ) push ( ) translate (pt. X1, y1 = coordinates (x0, y0, 85, a ) oval (x1-r, y1-r, r* 2, r* 2 ) line (x0, y0, x1, y1 )Īngle between a point and its handle - 90 degrees. Y1 = random ( HEIGHT ) oval (x1-r, y1-r, r* 2, r* 2 )Ī = angle (x0, y0, x1, y1 ) transform (CORNER ) translate (x0, y0 ) rotate (-a ) arrow ( 30, 0, 10 ) reset ( ) x0, y0, r = WIDTH/ 2, HEIGHT/ 2, 2 for i in range ( 5 ): The direction from the center of random points. geo import angle, distance, coordinates, reflect To use these commands in your script, simply import them: from nodebox. ![]() X, y = coordinates (x0, y0, d, a ) return x, y The reflection of a point through an origin point: def reflect (x0, y0, x1, y1, d= 1.0, a= 180 ): Y1 = y0 + sin (radians (angle ) ) * distance X1 = x0 + cos (radians (angle ) ) * distance The location of a point based on angle and distance: def coordinates (x0, y0, distance, angle ): The distance between two points: def distance (x0, y0, x1, y1 ):įrom math import sqrt, pow return sqrt ( pow (x1-x0, 2 ) + pow (y1-y0, 2 ) ) ![]() The angle between two points: def angle (x0, y0, x1, y1 ):Ī = degrees ( atan2 (y1-y0, x1-x0 ) ) return a You can also find the basics about sines and cosines here. The following math commands might be of help. Or you have the coordinates of one point and want to know the location of the second point based on an angle and a distance. Sometimes you have the location of two points and you want to know the angle between them. Since most of us probably weren't paying any attention during math class, this document explains some useful math techniques. Things like fluid motion, orbitting behavior and easing in and out all require math formulas. More often than not programming scripts in NodeBox involves a little bit of mathematics. ![]()
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