【正文】
m to create the 3D funnel. Place the first rectangle on top of the 3D antenna base. DrawRectangle. Now move the cursor to one corner of the top of the antenna base, and click on it, then move the cursor to the opposite corner of the top of the antenna base and click again. The rectangle window is open. Type funnel_base. Assign material to be vacuum. Choose Color and Transparency of your preference. Click Ok. Note that the dimensions of the rectangle should match those of the top of the antenna base. 二、創(chuàng)建模型 3. Drawing the Horn Aperture Next, draw the 2D rectangle that represents the top of the funnel, or the aperture of the horn. Click Rectangle icon or DrawRectangle. Type in the following values: , , for x, y and z, respectively. Then type the following values: and for dx and dy, respectively. Type horn_top in the name field. Assign material to be vacuum. Choose the Color and Transparency at you preference. Click Ok. 二、創(chuàng)建模型 4. Connecting 2D Objects to Create the Funnel Now you can connect the 2D objects that make up the base and the top of the funnel to create the 3D, funnelshaped o