Adobe Director Basics

ADOBE DIRECTOR BASICS
3D: Controlling appearance
The uvCoord list reports that the point under the mouse is 0.27 along the u axis and 0.53 along the v axis for this face.
The u axis for a face starts at the first corner (here, index 1: [0.00, 1.00]) and points towards the second corner (here,
index 5: [0.00, 0.67]). The v axis starts at the first corner and points towards the third corner (here, index 2: [0.33,
1.00]). In this case, the axes are vertical and horizontal, which simplifies the calculation. (The MapPointToTexture()
handler takes care of more complex cases where the two axes are not vertical and horizontal and not at right-angles to
each other).
vFloatDistanceFromBottom = 1.00 + (0.27 * (0.67 - 1.00))
put vFloatDistanceFromBottom
-- 0.91
vFloatDistanceFromLeft = 0.00 + (0.53 * (0.33 - 0.00))
put vFloatDistanceFromLeft
-- 0.17
To convert these values into a position within the texture image, you need to take into account the dimensions of the
texture image, and the fact that the vertical float value is calculated from the bottom:
vImageWidth = 256
vImageHeight = 128
vLocH = integer(vImageWidth * vFloatDistanceFromLeft)
put vLocH
-- 45
vLocV = integer(vImageWidth * (1.0 - vFloatDistanceFromBottom))
put vLocV
-- 11
Drawing on a 3D model
You can use this technique to draw on the surface of a model. To see this in action, download and launch the movie
DrawOn3D.dir.
The DrawOn3D.dir movie uses the Map Point To Texture script to let you draw on a texture image
Rendering
Rendering determines which software and hardware technologies are applied to the 3D data before it is displayed on
the screen.
Not all computers are created equal. What looks good on your development machine may result in poor quality
graphics or slow performance on some end-users' computers.
Last updated 8/26/2011
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