#!/usr/bin/env python
# coding: utf-8

# # RoughCanvas
# 
# The RoughCanvas give a nice hand-drawn style to your canvas!

# In[ ]:


from ipycanvas import RoughCanvas


# ### Draw shapes
# 
# The rough canvas gives a nice hand-drawn style to your canvas, **note** that it only works with direct draw calls, it does not work with paths created with `begin_path`, those paths will be drawned normally.

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canvas = RoughCanvas()

canvas.stroke_rect(100, 100, 100, 100)
canvas.fill_rect(50, 50, 100, 100)

canvas.stroke_circle(300, 300, 100)
canvas.fill_circle(350, 350, 100)

canvas.stroke_line(200, 200, 300, 300)

canvas


# ### Fill styles
# 
# With the RoughCanvas, not only you can modify the fill color but you can also modify the fill styling, using one of the following values: 'hachure' (default), 'solid', 'zigzag', 'cross-hatch', 'dots', 'sunburst', 'dashed' or 'zigzag-line'

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canvas = RoughCanvas(width=850, height=100)

canvas.fill_style = "blue"
canvas.line_width = 2.0

rough_fill_style_values = [
    "hachure",
    "solid",
    "zigzag",
    "cross-hatch",
    "dots",
    "sunburst",
    "dashed",
    "zigzag-line",
]

for i in range(len(rough_fill_style_values)):
    canvas.rough_fill_style = rough_fill_style_values[i]

    canvas.fill_rect(10 + i * 100, 10, 90, 80)


canvas


# ### Stroke styles
# 
# You can still change the stroke width using the `line_width` attribute, just like with the normal Canvas class

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canvas = RoughCanvas(width=600, height=300)

canvas.line_width = 3.0
canvas.stroke_rect(100, 100, 100, 100)

canvas.line_width = 10.0
canvas.stroke_rect(300, 100, 100, 100)

canvas


# ### Sketch options
# 
# There are some options you can play with to change the style of your drawing

# #### Roughness: value indicating how rough the drawing is

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canvas = RoughCanvas(width=850, height=100)

canvas.fill_style = "green"

for i in range(8):
    canvas.roughness = i

    canvas.fill_rect(10 + i * 100, 10, 90, 80)


canvas


# #### Bowing: value indicating how curvy the lines are when drawing a sketch

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canvas = RoughCanvas(width=850, height=150)

canvas.fill_style = "green"

for i in range(8):
    canvas.bowing = i * 3.0

    canvas.stroke_rect(20 + i * 100, 20, 90, 110)


canvas


# ## Make a rough Pie chart

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from math import pi

c = RoughCanvas(width=600, height=600)

c.fill_style = "green"
c.fill_arc(300, 300, 200, 0, 0.9 * pi)

c.fill_style = "red"
c.fill_arc(300, 300, 200, 0.9 * pi, pi + 0.2 * pi)

c.fill_style = "blue"
c.fill_arc(300, 300, 200, pi + 0.2 * pi, 2 * pi)

c.stroke_style = "black"
c.stroke_arc(300, 300, 200, 0, 2 * pi)

c


# ## Draw thousands of shapes at once

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n_particles = 3_000

import numpy as np

x = np.array(np.random.rayleigh(250, n_particles), dtype=np.int32)
y = np.array(np.random.rayleigh(250, n_particles), dtype=np.int32)
size = np.random.randint(4, 8, n_particles)

canvas = RoughCanvas(width=800, height=500)

canvas


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canvas.fill_rects(x, y, size)