o
    :a                     @   s   d dl Zd dlmZ d dlZd dlmZ d dlm	Z	 d dl
mZ dd Zdd Ze	dgd	d
dgddd Ze	dgd	d
ddd Ze	dgd	d
dddd Ze	dgd	d
ddd Ze	dgd	d
dddd Ze	dgd	d
d dd!d" Zd#d$ Zd%d& ZdS )'    N)assert_array_almost_equal)image_comparisonc                  C   sJ   t jddddddf \} }d|d  |  }d| | d  }|| ||fS )N   y              Y@y              i@      )npZmgrid)YXUV r   B/usr/lib/python3/dist-packages/matplotlib/tests/test_streamplot.pyvelocity_field	   s   r   c                  C   sx   t ddd} t ddd}t | |\}}d}t ||  t ||  }t ||  t ||  }| |||fS )Ng      g      @   d   g?)r	   linspacemeshgridcossin)xyr   r
   ar   r   r   r   r   swirl_velocity_field   s   r   Zstreamplot_startpointsTZmpl20Zpng)remove_textstyle
extensionsc                  C   s~   t  \} }}}tt|  |  dt| | d\}}t| | g}tj	| ||||d t
||d d S )N   )start_pointsok)r   r	   r   r   minmaxZcolumn_stackZravelplt
streamplotZplot)r   r
   r   r   Zstart_xZstart_yr   r   r   r   test_startpoints   s   r%   Zstreamplot_colormap)r   r   c               
   C   s8   t  \} }}}tj| ||||ddtjjd t  d S )Ng333333?r   )colordensity	linewidthcmap)r   r#   r$   cmZautumnZcolorbar)r   r
   r   r   r   r   r   test_colormap%   s
   r+   Zstreamplot_linewidthgMb`?)r   r   Ztolc               	   C   sV   t  \} }}}t||}d| |  }t  }|j| |||ddgd|d d S )Nr   g      ?r   k)r'   r&   r(   )r   r	   Zhypotr"   r#   figuresubplotsr$   )r   r
   r   r   ZspeedZlwaxr   r   r   test_linewidth-   s
    r0   Zstreamplot_masks_and_nansc               	   C   s   t  \} }}}tj|jtd}d|ddddf< tj|d dd df< tjj||d}t	 
 }tjd	d
 |j| ||||tjjd W d    d S 1 sQw   Y  d S )N)Zdtyper   (   <   P   x      )maskignore)Zinvalid)r&   r)   )r   r	   zerosshapeboolnanZmaarrayr#   r-   r.   Zerrstater$   r*   ZBlues)r   r
   r   r   r6   r/   r   r   r   test_masks_and_nans7   s   "r=   zstreamplot_maxlength.pnggS?c               
   C   sx   t  \} }}}t  }|j| |||dddggddd | d | d   kr0dks3J  J |jdd	d
 d S )Ng      $@              ?r   )	maxlengthr   r(   r'   r   r   )Ng\bw
@)Ngi@)ZxlimZylim)r   r#   r-   r.   r$   Zget_xlimZget_ylimset)r   r   r   r   r/   r   r   r   test_maxlengthD   s   ,rB   zstreamplot_direction.pnggy&1?c                  C   s4   t  \} }}}tj| |||ddddggddd	 d S )NZbackwardr?   r>   r   )Zintegration_directionr@   r   r(   r'   )r   r#   r$   )r   r   r   r   r   r   r   test_directionP   s
   

rC   c                  C   s   t  } tddd}tddd}t||\}}t dd| j }t j	||t
|t||d t| jjd	d
d d S )N
   r5             )Z	transform)r5            r   )decimal)r#   Zaxesr	   r   r   mtransformsZAffine2D	translateZ	transDataZbarbsr   r   r   ZdataLimZbounds)r/   r   r   Ztransr   r   r   test_streamplot_limitsY   s    

rP   c                  C   sR  t d} t d}t ddgddgg}t ddgddgg}tjtdd t||| | W d    n1 s:w   Y  t ddgddgg}t ddgddgg}tjtdd t||| | W d    n1 sow   Y  t ddgddgg}t ddgddgg}t||| | t ddg}t ddggg}tjtd	d t||| | W d    n1 sw   Y  t d
} t d
}t g d}t g d}tjtdd t||| | W d    n1 sw   Y  t g d}t g d}tjtdd t||| | W d    d S 1 s"w   Y  d S )N)r   r   rE   r5   rJ   zThe rows of 'x' must be equal)matchz The columns of 'y' must be equalr   z$'y' can have at maximum 2 dimensions)r   r   )r   rE   r5   )r   rE   rJ   z!'y' values must be equally spaced)r   r5   r1   )r   r5   rE   z'y' must be strictly increasing)	r	   Zonesr8   r<   pytestZraises
ValueErrorr#   r$   )uvr   r   r   r   r   test_streamplot_gridg   s@   



$rV   )Znumpyr	   Znumpy.testingr   rR   Zmatplotlib.pyplotZpyplotr#   Zmatplotlib.testing.decoratorsr   Zmatplotlib.transformsZ
transformsrN   r   r   r%   r+   r0   r=   rB   rC   rP   rV   r   r   r   r   <module>   s@    


	






