3dsmax中怎么使用Trim进行样条线的剪切

2025-02-16 03:00:26
推荐回答(1个)
回答1:

  原因:   因为可编辑样条线只针对二维物体,长方体为三维物体,想要修改长方体需要用可编辑多边形或可编辑网格命令。   可编辑样条线使用方法如下:   1、只针对二维物体   2、1)单击修改面板三角→编辑样条线   2)右击二维图形——转换为——可编辑样条线   注:区别:右击转换为样条线时原图形的参数无法进行更改;当在修改面   板添加时可以进行更改   3、附加(Attach):将多个二维线条合并为一个,便于修改 多重附加(Mult Attach):主要针对于多个物体 注:对物体进附加时,物体不能进行关联(实例)复制 在绘制二维图形时可将后方的对号取消,也可进行附加   注:附加与群组的区别:附加物体属性会改变,群组物体属性不会改变。   4、点:Vertex “1”   (1)显示点的个数(显示顶点编号) 几何体:   (2)断开(Break):将一个点断开为两个点   (3)细化/优化(Refine):添加点不改变物体的位置及形状,若要更改位置及形状必须使用移动工具进行更改   (4)插入(Insert):在要加点处单击,然后移动鼠标决定形状   (5)焊接(weld):将两点合并为一个点(选中两个点调节参数,单击焊接按钮) (点的个数变少)   自动焊接:勾选自动焊接,调节参数,选中焊接的点拖动到另一个点即可(点的个数变少)   注:在焊接时所焊接的物体必须为同个的物体,或附加物体   (6)连接(connect):在两点间用直线进行连接(点的个数不变)   方法:单击“连接”按钮——指向一点拖动到另一点上,指针发生改变后松开   (7)圆角(Fillet):先选中点——设置圆角数值——单击“圆角”按钮或回车或拖动后三角   (8)倒角/切角(Chamfer) 例:靠背椅   顶视:矩形120*155,在前视图向上复制,编辑样条线(Edit Spline)→将两个图形附加(Attach)→再将顶视图右侧的边删除,→在前视图将垂直的两个边连接(connect)→选中点对点进行圆角→绘制倒角BOX   例:楼梯   (1)在前视图中做矩形:50×100   (2)进入修改面板——线段“2”——删除左、下边线段——退出2级别 (3)工具(Tools)——阵列(Array),X:100,Y:-50,数量:10 (4)选中线进行分离勾选复制——移动(Move)——X-100 下面画一条移动 Y -50   (5)多重附加(合并对象)   (6)数字“1”,选中要连接的两点——Connect   (7)Ctrl+A——Weld:0.1(原地焊接)——退出1级别   (8)修改面板——拉伸(Extrude)(挤出) 5、线段:Segment“2” (1)分段:Divide   方法:先选中线段,输入要加的点数——单击“分段”按钮 注:在拆分直线时为等分,若拆分的为曲线则为非等分。 (2)分离:Detach   将选中的线段从当前图形中分离出去,成为一个独立对象   (同一图形: 重定向:与原图形彻底分开。复制:从原图形中复制分离出来)   靠椅   6、样条线:Spline   1)轮廓:对二维物体添加轮廓使之挤出后产生厚度 正值往外扩,负值往内缩 例:门套   在前视图中绘制矩形——右击转换为可编辑线条——2,删除下边线条——3,outline:-80——修改面板——extrude:挤出245   2)二维布尔运算:Boolean(样条线级别) 要进行布尔运算的对象必须为一个整体(附加)   选中要运算的物体→选择运算方式→单击布尔运算按钮→在场景中单击对象即可   注:若进行运算时无法完成,则可以使用修剪命令完成,完成之后必须对物体进行焊接。   3)Trim:修剪   方法:选中对象作为边界——单击“trim”修剪——再单击要修剪线条 注:修剪之前先将线条附加,修剪之后将点进行焊接 4)extend:延伸   方法:选中对象作为延伸边界——单击“extend”——再单击要延伸线条 (3)mirror:镜像 (4)detach:分离

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