Adobe Director Basics

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ADOBE DIRECTOR BASICS 3D: Controlling appearance extruderResource.bevelType: #none, #miter, or #round. The default value is #none. If #none is used then bevelDepth (see below) is ignored. This determines the shape of the bevel that may be added between the vertical faces and the horizontal tunnel. extruderResource.bevelDepth: A floating point value between 0.0 and 10.0. The default value is 1.0. This property does not have any effect if bevelType (see above) is #none. This determines how many world units the extruder resource is inflated to the top, bottom, and to the sides. If the bevelDepth is greater than half the tunnelDepth, the resulting mesh may look strange. Multiple meshes The extruder3d() command creates a separate mesh for each letter. This means that you can apply a different shader to each letter if you wish. See the shaderList section of “Models” on page 159 for more details. Fonts and font properties In <strong>Director</strong> 11.5, the extruder3d() command may yield unexpected results if some characters are in a different font, font size, or font style from others. The following screenshot illustrates some of the issues: Changing font or font properties in the source text can lead to unexpected results In the Text to Extrude text member, the alignment is set to #center. In addition, the middle two letters of each word are given different properties from the rest of the word. As you can see: textChunk.alignment is ignored. Bold and underlined text is treated as plain text. Changing the font leads to the wrong letters being displayed, and no change in font. If the fontSize of a given character is set that fontSize is applied to the next character. If a given character is set to appear in an italic typeface, the italic typeface is applied to the next character. Note: For best results, use the same font and font properties for the entire text of the source text member, or use a custom vertexList as explained below. Using a custom vertexList After the extruder resource has been created, you can change the vertexList of the extruder on the fly. The shape of all models that use the extruder resource are updated to reflect the new geometry. Last updated 8/26/2011 169
ADOBE DIRECTOR BASICS 3D: Controlling appearance -- Lingo and JavaScript syntax vExtruder = member("Text to Extrude").extrude3D(member("3D")) vModel = member("3D").newModel("Extrusion", vExtruder) vExtruder.vertexList = member("VectorShape").vertexList In <strong>Director</strong> 11.5, extruderResource.vertexList is a write-only property. You cannot retrieve the vertexList from an extruder resource after it is set, as the following examples show: -- Lingo syntax put member("3D").model("Extruded").resource.vertexList -- // JavaScript syntax trace(member("3D").getPropRef("model", 1).resource.vertexList); // null To see an example of this in action, download and launch the movie Extruder.dir. Note: The 2D co-ordinates of a vectorShape member are measured only rightwards and downwards, whereas the 3D coordinates of a model resource are measured rightwards, upwards, and forwards. As a result, the shape of an #extruder resource appears to be flipped vertically. Texture mapping An #extruder resource has only one mesh. The same shader is applied to both front and back, as a mirror image, and it is smeared along the sides. If you want to create an modelResource that appears to be extruded, and which has separate shaders on the front, back and tunnel, use a #mesh resource. See “Creating a mesh resource” on page 170 for details. Creating a mesh resource The mesh generator is the most complex model resource. It allows you to create models with unique geometries at runtime. Some examples of typical uses are: Mathematically simple volumes Lathed shapes Walls for a building Low-polygon models used for collision detection Terrain meshes Writing a script to create a custom mesh requires a good visualization of 3D space, a good grasp of a number of lowlevel 3D concepts, concentration, and plenty of patience. However, you can find scripts that generate a mesh for you, from information that you provide in some of the demo movies that accompany this manual. Do-it-yourself mesh movies See “Mesh resources” on page 72 for a movie that allows you to create a 2D shape by setting points in a vectorShape member, and then transforms this into a 3D model by rotating the 2D shape around a vertical axis. The movie can generate scripts which recreate the models in your own movies. See “Not walking through objects” on page 222 for a script that generates a low-polygon ribbon mesh for use with collision detection. The script uses the vertexPoints of a VectorShape member to generate the shape of the ribbon. See “Following a pre-defined path” on page 220 for scripts that generate a tube from a curve defined by a vectorShape member. Last updated 8/26/2011 170
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Contents Preface Credits . . . . .
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Chapter 1: 3D basics Adobe® Direct
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Chapter 2: 3D: Controlling appearan
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