diff options
Diffstat (limited to 'FSF-2020/approximations-and-optimizations/Critical-Points/file5_f(x,y)=(y-x)(1-2x-3y).py')
| -rw-r--r-- | FSF-2020/approximations-and-optimizations/Critical-Points/file5_f(x,y)=(y-x)(1-2x-3y).py | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/FSF-2020/approximations-and-optimizations/Critical-Points/file5_f(x,y)=(y-x)(1-2x-3y).py b/FSF-2020/approximations-and-optimizations/Critical-Points/file5_f(x,y)=(y-x)(1-2x-3y).py index 8a90990..41c3b61 100644 --- a/FSF-2020/approximations-and-optimizations/Critical-Points/file5_f(x,y)=(y-x)(1-2x-3y).py +++ b/FSF-2020/approximations-and-optimizations/Critical-Points/file5_f(x,y)=(y-x)(1-2x-3y).py @@ -1,25 +1,29 @@ from manimlib.imports import* +#---- visualization of the function class ExampleAnimation(ThreeDScene): def construct(self): axes = ThreeDAxes() + label_x = TextMobject("$x$").shift([5.5,-0.5,0]) #---- x axis + label_y = TextMobject("$y$").shift([-0.5,5.5,0]).rotate(-4.5) #---- y axis - f_text = TextMobject("$f(x,y) = (y-x)(1-2x-3y)$").to_corner(UL) - - #----f(x,y) = (y-x)(1-2x-3y) - f = ParametricSurface( + #---- f(x,y) = (y-x)(1-2x-3y) + surface = ParametricSurface( lambda u, v: np.array([ u, v, (v-u)*(1-2*u-3*v) - ]),v_min = -1, v_max = 1, u_min = -1, u_max = 1, checkerboard_colors = [PURPLE_B,PURPLE_C,PURPLE_D, PURPLE_E], - resolution=(20, 20)).scale(1).fade(0.2).shift([0.2,0.2,0]) + ]),v_min = -1, v_max = 1, u_min = -1, u_max = 1, checkerboard_colors = [PURPLE_B,PURPLE_C,PURPLE_D, PURPLE_E]).scale(1).fade(0.2).shift([0.2,0.2,0]) + + f_text = TextMobject("$f(x,y) = (y-x)(1-2x-3y)$").to_corner(UL) - self.set_camera_orientation(phi = 75 * DEGREES,theta= 60*DEGREES) + self.set_camera_orientation(phi = 60 * DEGREES, theta = 75 * DEGREES) self.begin_ambient_camera_rotation(rate=0.1) - self.add_fixed_in_frame_mobjects(f_text) self.wait(1) self.add(axes) + self.add(label_x) + self.add(label_y) + self.wait(1) self.play(Write(f)) - self.wait(3) + self.wait(4) |