C4D Python自动添加顶点_c4d.polygonobject撖寡情-优快云博客

该博客介绍了如何使用Python脚本从XYZ文件读取数据并创建Cinema 4D的PolygonObject。脚本读取文件中的点坐标，并根据需要调整Z轴方向和缩放。此外，还提供了为点分配颜色和法线的选项，但未在当前实现中使用。

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# XYZ to PolygonObject
# 908video / Michael Auerswald
# 908video.de / 908lab.de

import c4d
from c4d import gui

INVERT_Z = False
SCALE = 1.0

def main():
    
    # Get input file
    pts_file = c4d.storage.LoadDialog(title="Open XYZ file for processing", flags=c4d.FILESELECT_LOAD, def_path="d:\\")
    if pts_file is None:
        return  # cancelled

    doc = c4d.documents.GetActiveDocument()

    with open(pts_file,"r") as pts:

        num_points = sum(1 for line in pts)
        print("XYZ point count: " + str(num_points))
        
        new_obj = c4d.PolygonObject(num_points,0)
        
        vtx_color_tag = c4d.VertexColorTag(num_points)
        vtx_color_tag.SetPerPointMode(True)
        vtx_color_tag[c4d.ID_VERTEXCOLOR_DRAWPOINTS] = True
        
        data = vtx_color_tag.GetDataAddressW()
    
        points = new_obj.GetAllPoints()
        normals = new_obj.GetAllPoints()
        colors = new_obj.GetAllPoints()

        pts.seek(0)
    
        mult_z = 1.0
        if INVERT_Z is True:
            mult_z = -1.0
        
        idx = 0        
        for line in pts:
            values = line.strip().replace("\\n","").split(",")
            print values
            # read position values
            points[idx] = c4d.Vector(float(values[0])/1E14,float(values[1])/1E14,float(values[2])/1E14*mult_z) * SCALE
            """
            # since XYZ has no defined order of these columns, these columns may or may not exist and can contain normals, color or whatever
            # read second column of values
            if len(values) > 3:
                colors[idx] = c4d.Vector(float(values[3])/255.0,float(values[4])/255.0,float(values[5])/255.0)
                c4d.VertexColorTag.SetColor(data, None, None, idx, colors[idx])
                #normals[idx] = c4d.Vector(float(values[3]),float(values[4]),float(values[5]))
            
            # read third column of values
            if len(values) > 6:
                normals[idx] = c4d.Vector(float(values[6]),float(values[7]),float(values[8]))
            """
            # increase index
            idx += 1
            
        new_obj.SetAllPoints(points)
        
        new_obj.InsertTag(vtx_color_tag)
        doc.InsertObject(new_obj)
        c4d.EventAdd()

if __name__=='__main__':
    main()