Adobe Director Basics

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ADOBE DIRECTOR BASICS 3D: Controlling action vector1 = vector(3, 4, 5) vector2 = vector(5, 12, 13) trace(vector1.distanceTo(vector2)) -- 11.4891 trace(vector2.distanceTo(vector1)) -- 11.4891 put (vector1 - vector2).magnitude -- 11.4891 put (vector2 - vector1).length -- 11.4891 Note: Subtracting one vector for another is not permitted in JavaScript. For two vectors, both of which represent a translation or a direction, it is meaningful to calculate the angle between them. See vector.angleBetween() for more information. The angle between two direction vectors will be in the range 0.0 (if the vectors are parallel) to 180.0 degrees (if they are pointing in opposite directions). If one vector is pointing North and the second vector is at 135° to it, you cannot tell whether the second vector is pointing South-East or South-West. To distinguish between the two cases, you will also need to know which direction is Up. The vector.crossProduct() (see below) of the two vectors will point either up or down, depending on whether the second component points more or less East, or not. Binary operations A scalar is a one-dimensional number, such as 42, -0.7071, pi or _movie.frameTempo. The table below shows you what addition, substraction, multiplication, and division operations are permitted between scalars and vectors, vectors and vectors, and transforms and vectors. Note that some operations are meaningless, and fail silently. Other meaningless operations lead to a script error. Operation Description Output scalar + vector1orvector1 + scalar Returns a new vector equaling vector(vector1.x+scalar, vector1.y+scalar, vector1.z+scalar) scalar - vector1 Returns a new vector equaling vector(scalarvector1.x, scalar-vector1.y, scalarvector1.z) vector1 - scalar Returns a new vector equaling vector(vector1.x-scalar, vector1.yscalar, vector1.z-scalar) vector * scalarorscalar * vector Returns a new vector with the same direction as vector and a length equal to vector.length * scalar vector / scalar Returns a new vector with the same direction as vector and a length equal to vector.length / scalar Last updated 8/26/2011 A new vector object A new vector object A new vector object A new vector object A new vector object scalar / vector Operation not supported *** Script error *** vector1 + vector2 Returns a new vector equal to vector(vector1.x+vector2.x, vector1.y+vector2.y, vector1.z+vector2.z) A new vector object 367
ADOBE DIRECTOR BASICS 3D: Controlling action Operation Description Output vector1 - vector2 Returns a new vector representing the displacement from the position of vector 2 to the position of vector1. vector1 * vector2 Returns the dotProduct() of the two vectors. See below. vector1 / vector2 Meaningless operation. 0 transform * vector Returns a new vector that translates, rotates and scales the vector by the amounts defined in the transform. transform + vector transform - vector transform / vector vector + transform vector - transform vector / transform Uses of binary operations Meaningless operations. 0 Meaningless operations. 0 Last updated 8/26/2011 A new vector object A floating-point value A new vector object vector * transform Operation not supported. *** Script error *** Operation Uses -vector If the vector is a translation, reverses the direction of the translation. vector * scalar Scales a vector vServerToReceiver = vReceiver.worldPosition - vServer.worldPosition -- (see vector1 - vector2 below) vReceiverToServer = -vServerToReceiver If the vector is a unit direction vector, and the scalar is the distance to travel, the result is a translation vector.the distance to travel, the result is a translation vector. vSpaceShip.translate(vDirectionVector * vDistance) vector / scalar Divides a vector into smaller steps. If the vector is a translation vector and the scalar is a number of frames, the result will be the translation to move on each frame. vMovementPerFrame = vTotalMovement / vNumberOfFrames vector1 + vector2 1) If vector1 is a position and vector2 is a translation, the result is a new position. vNewPosition = vOldPosition + vTranslation 2) If vector1 and vector2 are both translations, then the result is a new translation that combines both movements vDiagonalMotion = vForwardMotion + vSidewaysMotion 368
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ADOBE ® DIRECTOR ® BASICS
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Contents Preface Credits . . . . .
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Chapter 1: 3D basics Adobe® Direct
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Chapter 3: 3D: Controlling action F
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