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# Changing colors of lines intersecting a box

The lines intersecting the rectangle are colored in red, while the others are left as blue lines. This example showcases the `intersect_bbox` function.

    import numpy as np
    import matplotlib.pyplot as plt
    from matplotlib.transforms import Bbox
    from matplotlib.path import Path

    # Fixing random state for reproducibility
    np.random.seed(19680801)

    left, bottom, width, height = (-1, -1, 2, 2)
    rect = plt.Rectangle((left, bottom), width, height, facecolor="#aaaaaa")

    fig, ax = plt.subplots()
    ax.add_patch(rect)

    bbox = Bbox.from_bounds(left, bottom, width, height)

    for i in range(12):
        vertices = (np.random.random((2, 2)) - 0.5) * 6.0
        path = Path(vertices)
        if path.intersects_bbox(bbox):
            color = 'r'
        else:
            color = 'b'
        ax.plot(vertices[:, 0], vertices[:, 1], color=color)

    plt.show()

Total running time of the script: ( 0 minutes 0.121 seconds)

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