Chapter 26 Introduction to Dynamic Blocks 797 Copyright Goodheart-Willcox Co., Inc. NOTE NOTE The Properties palette includes Distance multiplier and Angle offset options for move, stretch, and polar stretch actions. Enter a value in the Distance multiplier text box to multiply by the parameter value when adjusting the block. For example, if you assign a distance multiplier of 2 to a move action and move an object 4 units, the object actu- ally moves 8 units. Enter an angle in the Angle offset text box to change the parameter grip angle. For example, if you assign an offset angle of 45 to a move action and move an object 10°, the object actually moves 55°. Exercise 26-5 www.g-wlearning.com/CAD/ Complete the exercise on the companion website. Rotation Parameters Rot a tion P a r a meter s A rotation parameter creates a rotation property to which you can assign a rotate action. For example, assign a rotation parameter with a rotate action to the needle in the speedometer block shown in Figure 26-21 to rotate the needle around the circum- ference of the dial. To insert the rotation parameter, access the Rotation parameter option and pick the center of the circular base of the needle as the rotation base point. Then pick a point, such as the needle endpoint shown, to specify the parameter radius. Set the default rotation angle from 0° east, or if rotation should originate from an angle other than 0°, use the Base angle option. Figure 26-21 shows using the Base angle option to base the rotation at –10° and then specifying a default rotation angle of 200° to align the rotation with the 120 and 0 mph marks. rotation parameter: A parameter that allows objects in a block to rotate independently of the block. rotate action: An action used to rotate objects within a block without affecting the other objects in the block. Ribbon Block Editor Action Parameters Rotation Type BPARAMETER Rotation Figure 26-20. Applying the polar stretch action. Specify angle value Polar parameter grip Specify length value Insertion point grip