When using PowerPoint to make common sense courseware, we sometimes use the microscope to observe the animation effects of the object, the normal way is to add the relevant Flash animation to achieve, in fact, only in PowerPoint we can also create a microscope to observe the effects of objects.
Basic principle: When observing objects with a microscope, only the scenery within the circular region can be seen; Of course, if the angle of observation has changed, the scenery we observe in the circular region will be different. We just need to make a transparent picture in the PNG format and import it into the PPT document, then import the pictures that need to be observed into the PPT document, and finally set the animation effect to the picture that needs to be observed, can realize the animation effects of the microscope observation object.
The production of Transparent pictures
First step: Start PowerPoint 2003 (similar to other versions), remove all the elements from the default open slides, and then select the rectangle control on the Drawing toolbar, insert a rectangle into the slide, and resize the rectangle so that it is exactly the size of the slide.
Step Two: Right-click the rectangle, select Format AutoShape, and switch to the colors and Lines tab. Set the fill color to black, select the Oval control on the Drawing toolbar, insert a circle in the middle of the black rectangle and resize it, and then set the fill color of the circle to white (Figure 1) , select the rectangles and circles in Figure 1 and right-click, select group → Group, combine them together, and then copy slide 1 at the end of Figure 1 A and paste as slide 2.
Step Three: Right-click the graphic that's already grouped together on the slide, select Cut, and then click the edit → paste selective command on the menu to select the Picture (PNG) option in the Pop-up Paste Selective dialog box, when the graphic in the slide has become a picture in PNG format.
Fourth Step: Click the menu "view → toolbar → picture" command, select the Set Transparent Color button, and then click anywhere on the slide so that the circular area on the slide becomes transparent, and finally right-click the picture, select Save as Picture, and save the picture to any location on your hard disk, with the file name "microscope." PNG. "
Second, the production of animation effects
Step one: Close and re-run PowerPoint 2003 to create a new microscope animation effect. Ppt. Click the menu "Insert → picture → from file" command, insert transparent picture "microscope". PNG, and then insert a microscope to look at the object picture and adjust the size of the picture so that it just covers the microscope. PNG. "
Step Two: First select the image of the object that the microscope needs to watch, and then click the menu slide show → Custom animation command, open the Custom Animation panel, click the Add Effect button in the Panel, and select motion path → draw Custom path → curve. Finally, draw a curve on the image of the object that the microscope needs to watch and move the curve to the center of the slide, as shown in Figure 2 A.
Step three: In the Custom Animation panel, first select the Picture 1 tab shown in Figure 2 B and click the drop-down arrow to the right of the start set the argument to before, and then follow the same method to set the parameter to the right of speed to very slow, and then select the picture of the object that the microscope needs to look at, and click Custom Animation panel, select emphasis → enlarge/shrink to add an enlarged/reduced animation effect to the picture in the Add Effect button.
Step Fourth: Select the newly added Picture 1 tab in the Custom Animation panel (below in Figure 2 B), first change the argument after "start" to "after", then right-click the picture of the object that the microscope needs to watch in the slide, select "Stacking order → put it on the bottom", and press F5 shortcut key, You can enjoy the vivid microscope animation effects.