Autodesk 62205-051408-9001 User Guide - Page 373
Transforming Emitter Objects, Click the Edit Control Points option.
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Working with Emitter Objects ❚❘❘ For example, an emitter has two particle types: Stars and Squares. Stars has a Velocity of 40, and Squares has a Velocity of 15. If the emitter's Velocity scaling factor is set to 200%, the effective velocity for Stars is 80 and for Squares is 30. Note: Changing an emitter scaling factor makes no difference to the particles if the corresponding particle type property is set to 0. Unlike particles, emitters can be controlled directly and moved over time. You work with emitter objects like you work with objects in the Paint operator. position, rotation, and pivot point, and you can edit the control points. To edit control points for a line emitter: 1. Click the Arrow tool (TAB) and select the line emitter. 2. Click the Edit Control Points option. Transforming Emitter Objects You can transform Emitter objects using the Transform controls or the Arrow tool. For line emitters, you can move the control points and adjust their tangent handles to make curved lines. You can also animate the transforms. Transform controls include Position, Rotation, Size, and Pivot. For details, see Transform Controls. The Arrow tool has two options: • Edit Object option-Move and rotate the object, as well as reposition the object's pivot point. • Edit Control Points option-Add, move, and edit control points. For line emitters, you can use the Arrow tool with the Edit Control Points option to move or add points. To transform an emitter object: 1. Select the emitter object in the Workspace panel (F3) or in the viewport. 2. Transform the emitter object using the Transform controls or the Arrow tool. You can only move a point emitter. For circle and area emitters, you can also change size and rotation. For line emitters, you can change 3. As you edit the control points, you can do any of the following: • To add a control point, click the line. • To delete a control point, select the control point and press DELETE. • To extend the tangent handles, CTRL-drag a control point. • To hide the tangent handles, CTRL-click a control point. • To break the tangent handles, CTRL-drag a tangent handle. • To move it, drag a tangent handle. You can delete the entire emitter or the selected control point. You cannot transform particle types. Since particle types belong to the emitter, only the emitter can be transformed. That is, particle types are not objects like letters that are grouped as a word. When you select a particle type for an emitter in the Workspace panel, the Transform controls can still be accessed, but the transform values are only for the emitter object that the particle type belongs to. 357
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