Moved mathpixel to new repo and added new default animation

apps/quadratic.py

@@ -1,80 +0,0 @@
-#!/usr/local/bin/python3.6
-
-import numpy as np
-import os
-import sys
-import time
-import colorsys
-
-Nx = int(sys.argv[1])
-Ny = int(sys.argv[2])
-iterations = 10
-
-class Slider:
-    def __init__(self, lo, hi, step, pos=0):
-        self.lo = lo
-        self.hi = hi
-        self.stepSize = step
-        self.pos = 0
-        self.dir = 1
-    
-    def step(self):
-        if self.pos >= self.hi:
-            self.dir = -1
-        elif self.pos <= self.lo:
-            self.dir = 1
-        
-        self.pos += self.dir * self.stepSize
-        return self.pos
-
-Sa = Slider(-10, 10, 0.1/iterations, 0) #1.1
-Sb = Slider(-10, 10, 0.2/iterations, 1) #-2.1
-Sc = Slider(-10, 10, 0.2/iterations, 2) #-0.33
-Sd = Slider(-10, 10, 0.1/iterations, 3) #1.7
-Se = Slider(-10, 10, 0.2/iterations, 4)
-Sf = Slider(-10, 10, 0.01/iterations, 5)
-
-x, y = np.meshgrid(
-    np.linspace(-4, 4, Nx),
-    np.linspace(-4, 4, Ny))
-
-color = 1.0
-
-img = np.zeros( [Ny, Nx, 3] )
-
-cr = 1.0
-cg = 0.5
-cb = 0.25
-
-step = 0
-while True:
-    a = Sa.step()
-    b = Sb.step()
-    c = Sc.step()
-    d = Sd.step()
-    e = Se.step()
-    f = Sf.step()
-
-    curve = (np.abs(a*x**2 + b*x*y + c*y**2 + d*x + e*y + f) <= 1.5)*1
-
-    cr, cg, cb = colorsys.hsv_to_rgb(color, 1, 1)
-
-
-    s = np.shape(curve)
-
-    #img[:,:,0] = curve
-    img[:,:,0] = np.where(curve > 0, curve*cr*255, img[:,:,0])
-    img[:,:,1] = np.where(curve > 0, curve*cg*255, img[:,:,1])
-    img[:,:,2] = np.where(curve > 0, curve*cb*255, img[:,:,2])
-
-    step += 1
-    if step % iterations == 0:
-        out = img.reshape((Nx*Ny*3,)).astype(np.uint8)
-        os.write(1, out.tobytes())
-        time.sleep(0.01)
-
-    color = (color+0.01/iterations ) % 1
-
-    cb = (cb + 0.05) % 1
-
-