有没有办法改变ezdxf中的背景颜色？

Question

我想更改照片的背景颜色，因为目前尚不清楚，我尝试更改matplotlib背景的图，但它不起作用

    import matplotlib.pyplot as plt
    import ezdxf
    from ezdxf.addons.drawing import RenderContext, Frontend
    from ezdxf.addons.drawing.matplotlib import MatplotlibBackend
    plt.rcParams["savefig.facecolor"] = 'black'
    plt.rcParams['axes.facecolor'] = 'black'

    doc = ezdxf.readfile("second.dxf")
    msp = doc.modelspace()
    doc.layers.new(name='MyLines', dxfattribs={'linetype': 'DASHED', 'color': 8})


    auditor = doc.audit()


    if len(auditor.errors) == 0:
       fig = plt.figure()
       ax = fig.add_axes([0, 0, 1, 1])
       ctx = RenderContext(doc)
       out = MatplotlibBackend(ax)
       Frontend(ctx, out).draw_layout(msp, finalize=True)
       fig.savefig('your.png', dpi=300, facecolor = 'black', edgecolor = 'black')

Answer 1

drawing附加组件仍处于测试阶段，但是您可以尝试将背景设置为白色：

if len(auditor.errors) == 0:
    fig = plt.figure()
    ax = fig.add_axes([0, 0, 1, 1])
    ctx = RenderContext(doc)

    # --- add this lines ---
    ctx.set_current_layout(msp)
    ctx.current_layout.set_colors(bg='#FFFFFF')
    # --- add this lines ---

    out = MatplotlibBackend(ax)
    Frontend(ctx, out).draw_layout(msp, finalize=True)
    fig.savefig('your.png', dpi=300, facecolor = 'black', edgecolor = 'black')

Answer 2

尝试覆盖 MODEL_SPACE_BG_COLOR 变量：
ezdxf.addons.drawing.properties.MODEL_SPACE_BG_COLOR = "#FFFFFF"