Graph Animation (3D)
This feature is available in 3D gradient and shaded graphs. An animation is a succession of views in real-time as a surface is rotated about its XY angle, its Z angle, or both. The program will display the different views in a continuous succession until the animation is halted. If there are multiple graphs present, each graph will be animated at the full speed of its individual thread. As such, certain graphs may rotate faster than others. The graphs are drawn in memory first and displayed as a bitmaps.
Since the purpose of an animation is often to see the nuances in just a single surface, you may want to select an individual graph of interest before beginning an animation. When an animation is in progress, all other Tradescape functions are suspended, although you may work with other applications in the foreground and maintain the animation in the background.
Viewing Multiple Surfaces in an Animation
When an animation is initiated and multiple graphs are present, all graphs are rotated in synch on a separate thread. To more carefully compare multiple surfaces at a given angle, you can stop the animation at any time by clicking the left mouse button on any of the graphs. To restart the animation, simply click again. Since the pause is intended to allow comparisons across different graphs, there may be a small update period after a click where all of the graphs catch up in terms of the viewing angles. When the animation is closed, the view set for the graphs is restored.
Using a Wheel Mouse to Manually Rotate Surfaces
If you want to see multiple graphs rotated under your control, you can use your wheel mouse to accomplish the rotations. By default the center wheel of your mouse will rotate the XY angle of all graphs present. To rotate the common Z angle using the wheel, first click the center wheel. The wheel will now rotate the Z angle in the graphs.
Simple rotation of the wheel produces angular shifts of 5 degrees for the XY and Z angles. Intermediate shifts will occur if the Control button is depressed while rotating the wheel, 15 degrees for the XY angle, and 10 degrees for the Z angle. Coarse shifts will occur if the Shift button is depressed while rotating the wheel, 30 degrees for the XY angle and 15 degrees for the Z angle.
The Modify 3D Animation Settings option is available in 3D gradient and shaded graphs. This is used to customize the animation type and the pertinent view angles. When this dialog is closed with the OK button, an animation is started.
The adjacent Start/Stop 3D Animation button is used to begin and end the animation. If the animation is started using this option, the existing 3D Animation settings are used.
There are four animation options (Vary). You may animate only the XY view angle by selecting the XY option or only the Z view angle by selecting the Z option. You may also animate both view angles. The XY,Z selection will animate all of the Z angles while stepping through the XY angles. The Z,XY option will animate all of the XY angles while stepping through the Z angles.
You must specify the Start, End, and Increment for each angle being animated. Entries for the XY angle must be between 0 and 359 degrees and those for the Z angle must be between -90 and 90 degrees. The increment must be non-zero. All values must also be integers.
The Graph option animates the graph exactly as it is being currently rendered. This means titles, labels, backplanes, and contours will be animated if present. The Surface,Data option animates only the 3D surface and the data points. The Surface option animates only the surface.
The Surface,Data and Surface options are identical for graphs that contain only a surface or only data points. In both instances, titles, labels, backplanes, and contours are removed. The animation thus consists of only the basic surface or data.
Saving and Reading Animation Files
Although the current animation specifications are saved across sessions, the program stores only one set of animation parameters for all of the program's graphs. If you want to regularly use more than one animation sequence within the program, you must Save the animation information to a disk file. Files are saved in binary with ANI extensions. To read previously saved animation parameters, use the Read button.
The Reset button restores a default where only the XY angle is animated at 5 degree increments.
When OK is chosen, the initial animation starts.
Use the adjacent Start/Stop 3D Animation button to end the animation. It will be the only button active during animation.