Add option to add ticks on x-axis in BarChart()

[DangGiaChi]

Motivation

It's only a minor change. I found out that BarChart() doesn't have an option to add ticks on x-axis. I know it's because the x-axis is usually for names or labels and not values, but I think it's nice to add an option to add ticks to seperate bars for better visualization.

Proposed changes

• I looked up at how manim add ticks on y-axis and created an option for people to also add ticks to the x-axis
• I added a config parameter "include-x-ticks"
• The number of ticks divided is also the number of values

Test

Code:

from manimlib import *

class Test(Scene):
    def construct(self):
        global chart
        bar_value = [50]*10
        chart = BarChart(
            bar_value,
            label_y_axis = True,
            n_ticks = 10,
            max_value = 100,
            bar_label_scale_val = 0.5,
            include_x_ticks = True
        )
        self.add(chart)

Result

:

[TonyCrane]

Here are some suggestions. Hope you can improve them :)

[DangGiaChi]

Okok, I'll check it out as soon as it's morning at my place:)