TAILIEUCHUNG - From after effects to flash poetry in motion graphics - part 5

Để tạo hiệu ứng cho hình, bạn bấm phải vào hình trong cửa sổ làm việc chọn Effect Create Effect, có rất nhiều Effect cho bạn chọn sử dụng, bấm OK. Bạn có thể tùy ý kéo dài hay thu ngắn đoạn Effect được biểu diễn phía dưới thanh công cụ. | FROM AFTER EFFECTS TO FLASH POETRY IN MOTION GRAPHICS Figure 5-25. The Write On filter lets you paint on a solid. Naturally there are some rules for using the Write On filter. The major ones are as follows For this filter to do anything the Brush Position needs to be animated between keyframes. The Brush Time Properties are used to animate the look of the stroke as it moves along the path. This filter does not draw lines. It draws a series of dots. A line is simulated by using a low number in the Brush Spacing parameter. You can t start to merrily scribble away. The Comp must be in edit mode. Now that you have a better understanding of what this filter does let s put it to work. 1. To put the Comp into edit mode double-click the Comp name in the timeline. You will know you are in edit mode when the Comp appears in its own tab in the Comp window and there is a timeline under the Comp in the Comp window. 2. Twirl down Comp Name Effects Write On in the timeline. When the Write On properties appear specify the following values Brush Size Brush Hardness 51 Brush Opacity 48 Stroke Length secs 0 Brush Spacing secs Paint Time Properties Opacity Brush Time Properties Size Paint Style On Transparent You are now ready to start creating your sine wave. The properties you just set determine how the dots will appear and how far apart they will be when the wave animates. The key to animating a brush is the circle with the crosshairs that you see in the middle of the Comp window. It is the starting point of the animation. 180 CREATING TEXT ANIMATIONS FOR FLASH 3. Add a keyframe at the 0 point of the timeline in the Brush Position property. Drag the crosshairs to the upper-left corner of the Comp until the values in the Brush Position area are 24 27. This will be the start point of the sine wave. 4. Drag the playback head to the 1-second mark and change the Brush Position to 152 224. When you release the mouse you will see a dotted line. Use the following values for the .

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