Adobe Director Basics

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ADOBE DIRECTOR BASICS 3D: Controlling appearance If you need to make several changes to the same overlay, you need to refer to camera.overlay[layerIndex] (Lingo) or camera.getPropRef("overlay", layerIndex) (JavaScript) each time. The following example below adds a new overlay, determines which layer the overlay was added to, and sets the scale, regPoint and blend properties of the new overlay: -- Lingo v3DSprite = sprite(1) v3DMember = v3DSprite.member vCamera = v3DSprite.camera vTexture = v3DMember.texture(2) vLoc = point(50, 50) vRotation = 90 vCamera.addOverlay(vTexture, vLoc, vRotation) vIndex = vCamera.overlay.count vCamera.overlay[vIndex].scale = 0.5 vCamera.overlay[vIndex].regPoint = (vTexture.member).regPoint vCamera.overlay[vIndex].blend = 25 -- % // JavaScript v3DSprite = sprite(1); v3DMember = v3DSprite.member; vCamera = v3DSprite.camera; vTexture = v3DMember.getPropRef("texture", 2); vLoc = point(50, 50); vRotation = 90; vCamera.addOverlay(vTexture, vLoc, vRotation); vIndex = vCamera.count("overlay"); vCamera.getPropRef("overlay", vIndex).scale = 0.5 vCamera.getPropRef("overlay", vIndex).regPoint = (vTexture.member).regPoint vCamera.getPropRef("overlay", vIndex).blend = 25; Note: The expression (vTexture.member).regPoint gives an error if parentheses are not used. Finding a particular layer There is no built-in method for keeping track of which layer contains a given overlay. If you use overlays and backdrops intensively, you can create your own “layer manager” scripts. For less intensive use, where the only one layer uses a particular texture, you can use a handler such as this: -- Lingo on GetOverlayIndex(aCamera, aTexture) -------------------------- -- INPUT: must be a 3D camera object -- must be a texture object -- OUTPUT: Returns the index number of the topmost overlay -- that contains the given texture --------------------------------------------------------------- ii = aCamera.overlay.count repeat while ii if aCamera.overlay[ii].source = aTexture then exit repeat end if ii = ii - 1 end repeat return ii end GetOverlayIndex Last updated 8/26/2011 115
ADOBE DIRECTOR BASICS 3D: Controlling appearance Dynamic overlays and backdrops You can create overlays and backdrops that display animated 2D images. All you need to do is to update the texture that is displayed by the overlay or backdrop, and its image will update automatically. You can see an example of this with editable text in “Text in overlays and backdrops” on page 116. Rotating overlays and backdrops The built-in rotation feature is fine if you simply want to place a static overlay or backdrop at a particular angle. For dynamic rotation, you may need a different solution. To simulate the needle on a speedometer, for example, you may need to rotate the overlay or backdrop around its regPoint. The solution is to roll your own rotation code. To see an example script, download the movie RotateOverlay.dir. This includes a Movie Script with a handler named OverlaySetRotation(). You can use this handler to rotate an overlay around its regPoint. A call to OverlaySetRotation() rotates an overlay about its regPoint Drag the slider button to rotate the overlay. The regPoint of the blue overlay is set to the regPoint of the Needle vectorShape member. If you change the regPoint of the member and relaunch the movie, the overlay rotates around its new regPoint. Text in overlays and backdrops For most of your text requirements, <strong>Director</strong>'s 2D text and field members provide everything you need. Sometimes, however, you may need to display 2D in a 3D environment. To do so, you can use overlays and backdrops. Overlays and backdrops display textures. You can set the member of a texture to any cast member that has an image property, including Text members. To make the text look crisp when it is used in a texture, ensure that the rect of the Text member has dimensions which are a power of 2. The following example sets the rect of the Text member "Text" to rect(0, 0, 128, 256): Last updated 8/26/2011 116
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