Merge pull request #1 from FOSSEE/master

update fork. DONE

1 files changed, 29 insertions, 0 deletions

diff --git a/FSF-2020/calculus-of-several-variables/geometry-of-planes-and-curves/equations-of-planes-and-lines/file3_intercept_form_plane.py b/FSF-2020/calculus-of-several-variables/geometry-of-planes-and-curves/equations-of-planes-and-lines/file3_intercept_form_plane.py
new file mode 100644
index 0000000..258ac3c
--- /dev/null
+++ b/FSF-2020/calculus-of-several-variables/geometry-of-planes-and-curves/equations-of-planes-and-lines/file3_intercept_form_plane.py
@@ -0,0 +1,29 @@
+from manimlib.imports import *
+
+class pointnormal(ThreeDScene):
+    def construct(self):
+        axes = ThreeDAxes(x_min = 0, y_min = 0, z_min = 0)
+        self.set_camera_orientation(phi = 75*DEGREES, theta=45*DEGREES)
+
+        plane1 = Polygon(np.array([2,-3,2.5]),np.array([-1.45,2,2.5]),np.array([-0.5,4.5,-0.1]),np.array([3.5,-1,-0.2]), fill_color = WHITE, fill_opacity=0.3)
+
+        xlabel = TextMobject(r'$x$').shift(5*LEFT + 1.5*DOWN)
+        ylabel = TextMobject(r'$y$').shift(5*RIGHT + 1.5*DOWN)
+        zlabel = TextMobject(r'$z$').shift(3.3*UP + 0.5*LEFT)
+
+        zintercept = Dot().shift(2.5*UP)
+        zinterceptlabel = TextMobject(r'$(0,0,c\prime)$').shift(2.8*UP + RIGHT).scale(0.7)
+
+        yintercept = Dot().shift(3.7*RIGHT + 0.925*DOWN)
+        yinterceptlabel = TextMobject(r'$(0,b\prime ,0)$').shift(3.7*RIGHT+1.5*DOWN).scale(0.7)
+
+        xintercept = Dot().shift(2.9*LEFT + 0.75*DOWN)
+        xinterceptlabel = TextMobject(r'$(a\prime ,0,0)$').shift(3*LEFT+1.3*DOWN).scale(0.7)
+
+        self.play(FadeIn(axes), FadeIn(plane1))
+        self.add_fixed_in_frame_mobjects(xlabel, ylabel, zlabel, zintercept, zinterceptlabel, yintercept, yinterceptlabel, xintercept, xinterceptlabel)
+        self.wait(2)
+        self.remove(zintercept, zinterceptlabel, yintercept, yinterceptlabel, xintercept, xinterceptlabel, xlabel, ylabel, zlabel)
+        self.begin_ambient_camera_rotation(rate=0.5)
+        self.wait(5)
+        self.play(FadeOut(axes), FadeOut(plane1))