Merge pull request #1315 from Tony031218/shaders

Fix some bugs of the shaders branch

environment.yml

@@ -17,7 +17,11 @@ dependencies:
     - Pillow
     - progressbar
     - scipy
+    - sympy
     - tqdm
     - moderngl
     - pydub
+    - pyyaml
+    - validators
+    - ipython
 

example_scenes.py

@@ -104,6 +104,45 @@ class WarpSquare(Scene):
         self.wait()
 
 
+class TextExample(Scene):
+    def construct(self):
+        # To run this scene properly, you should have "Consolas" font in your computer
+        # for full usage, you can see https://github.com/3b1b/manim/pull/680
+        text = Text("Here is a text", font="Consolas", font_size=90)
+        difference = Text(
+            """
+            The most important difference between Text and TextMobject is that\n
+            you can change the font more easily, but can't use the LaTeX gramma
+            """,
+            font="Arial", font_size=24,
+            # t2c is a dict that you can choose color for different text
+            t2c={"Text": BLUE, "TextMobject": BLUE, "LaTeX": ORANGE}
+        )
+        VGroup(text, difference).arrange(DOWN, buff=1)
+        self.play(Write(text))
+        self.play(FadeIn(difference, UP))
+        self.wait(3)
+
+        fonts = Text(
+            "And you can also set the font according to different words",
+            t2f={"font": "Consolas", "words": "Consolas"},
+            t2c={"font": BLUE, "words": GREEN}
+        )
+        slant = Text(
+            "And the same as slant and weight",
+            font="Consolas",
+            t2s={"slant": ITALIC},
+            t2w={"weight": BOLD},
+            t2c={"slant": ORANGE, "weight": RED}
+        )
+        VGroup(fonts, slant).arrange(DOWN, buff=0.8)
+        self.play(FadeOut(text), FadeOut(difference, shift=DOWN))
+        self.play(Write(fonts))
+        self.wait()
+        self.play(Write(slant))
+        self.wait()
+
+
 class SquareToCircle(Scene):
     def construct(self):
         circle = Circle()

manimlib/extract_scene.py

@@ -79,7 +79,6 @@ def get_scenes_to_render(scene_classes, scene_config, config):
             logging.log(
                 logging.ERROR,
                 f"No scene named {scene_name} found",
-                file=sys.stderr
             )
     if result:
         return result

manimlib/mobject/svg/text_mobject.py

@@ -3,13 +3,13 @@ import os
 import copy
 import hashlib
 import cairo
-import manimlib.constants as consts
 from manimlib.constants import *
 from manimlib.mobject.svg.svg_mobject import SVGMobject
 from manimlib.utils.config_ops import digest_config
+from manimlib.utils.directories import get_text_dir
 
 
-TEXT_MOB_SCALE_FACTOR = 0.05
+TEXT_MOB_SCALE_FACTOR = 0.001048
 
 
 # Warning, these classes are currently based on an old rendering mode
@@ -28,13 +28,15 @@ class TextSetting(object):
 class Text(SVGMobject):
     CONFIG = {
         # Mobject
-        'color': consts.WHITE,
+        'color': WHITE,
         'height': None,
+        'stroke_width': 0,
         # Text
         'font': '',
         'gradient': None,
         'lsh': -1,
         'size': 1,
+        'font_size': 48,
         'slant': NORMAL,
         'weight': NORMAL,
         't2c': {},
@@ -54,20 +56,6 @@ class Text(SVGMobject):
         self.remove_last_M(file_name)
         SVGMobject.__init__(self, file_name, **config)
 
-        nppc = self.n_points_per_curve
-        for each in self:
-            if len(each.get_points()) == 0:
-                continue
-            points = each.get_points()
-            last = points[0]
-            each.clear_points()
-            for index, point in enumerate(points):
-                each.append_points([point])
-                if index != len(points) - 1 and (index + 1) % nppc == 0 and any(point != points[index+1]):
-                    each.add_line_to(last)
-                    last = points[index + 1]
-            each.add_line_to(last)
-
         if self.t2c:
             self.set_color_by_t2c()
         if self.gradient:
@@ -77,7 +65,7 @@ class Text(SVGMobject):
 
         # anti-aliasing
         if self.height is None:
-            self.scale(TEXT_MOB_SCALE_FACTOR)
+            self.scale(TEXT_MOB_SCALE_FACTOR * self.font_size)
 
     def remove_last_M(self, file_name):
         with open(file_name, 'r') as fpr:
@@ -206,7 +194,7 @@ class Text(SVGMobject):
         if self.font == '':
             print(NOT_SETTING_FONT_MSG)
 
-        dir_name = consts.TEXT_DIR
+        dir_name = get_text_dir()
         hash_name = self.text2hash()
         file_name = os.path.join(dir_name, hash_name) +'.svg'
         if os.path.exists(file_name):

manimlib/scene/media_dir.txt

@@ -1 +0,0 @@
-media

manimlib/stream_starter.py

@@ -1,51 +0,0 @@
-from time import sleep
-import code
-import os
-import subprocess
-
-from manimlib.scene.scene import Scene
-import manimlib.constants
-
-
-def start_livestream(to_twitch=False, twitch_key=None):
-    class Manim():
-        def __new__(cls):
-            kwargs = {
-                "scene_name": manimlib.constants.LIVE_STREAM_NAME,
-                "open_video_upon_completion": False,
-                "show_file_in_finder": False,
-                # By default, write to file
-                "write_to_movie": True,
-                "show_last_frame": False,
-                "save_pngs": False,
-                # If -t is passed in (for transparent), this will be RGBA
-                "saved_image_mode": "RGB",
-                "movie_file_extension": ".mp4",
-                "quiet": True,
-                "ignore_waits": False,
-                "write_all": False,
-                "name": manimlib.constants.LIVE_STREAM_NAME,
-                "start_at_animation_number": 0,
-                "end_at_animation_number": None,
-                "skip_animations": False,
-                "camera_config": manimlib.constants.HIGH_QUALITY_CAMERA_CONFIG,
-                "livestreaming": True,
-                "to_twitch": to_twitch,
-                "twitch_key": twitch_key,
-            }
-            return Scene(**kwargs)
-
-    if not to_twitch:
-        FNULL = open(os.devnull, 'w')
-        subprocess.Popen(
-            [manimlib.constants.STREAMING_CLIENT, manimlib.constants.STREAMING_URL],
-            stdout=FNULL,
-            stderr=FNULL)
-        sleep(3)
-
-    variables = globals().copy()
-    variables.update(locals())
-    shell = code.InteractiveConsole(variables)
-    shell.push("manim = Manim()")
-    shell.push("from manimlib.imports import *")
-    shell.interact(banner=manimlib.constants.STREAMING_CONSOLE_BANNER)

manimlib/utils/directories.py

@@ -33,6 +33,10 @@ def get_tex_dir():
     return guarantee_existence(os.path.join(get_temp_dir(), "Tex"))
 
 
+def get_text_dir():
+    return guarantee_existence(os.path.join(get_temp_dir(), "Text"))
+
+
 def get_mobject_data_dir():
     return guarantee_existence(os.path.join(get_temp_dir(), "mobject_data"))
 

requirements.txt

@@ -15,3 +15,4 @@ pyyaml
 screeninfo
 pyreadline; sys_platform == 'win32'
 validators
+ipython