CreateTrackRealismAccc

Speed Dreams Documentation Wiki

Create your shadow map first: Create a shadow map for tracks in Blender
Make sure you have installed the optimized AC3D exporter for Speed Dreams
First check if no mesh of a track object has more than 500 faces, if so try to cut it in two. In Blender you can achieve this:
- By switching to "Edit Mode" via "Tab" key
- Selecting faces you want to seperate
- Press "P > Selected" at the "Seperate" menu in "Edit Mode"
Now check if every face is triangulated. If you find quad faces you can triangulate them in Blender by:
- Select the object you'd like to triangulate
- Switch to "Edit Mode" via "Tab" key
- Select all faces of the object by pressing "A" key
- Press "CTRL+T" to triangulate the selected faces
Make sure your meshes have no duplicated vertices, Blender allows you to remove them by:
- Select your object and switch to "Edit Mode" by pressing the "Tab" key
- Press "A" key in "3D View" to select all vertices
- Now press "W" key and select "Remove Doubles" from the context menu

After you've exported your track, open it in a text editor and check if there are any faces not triangulated by searching for "refs 4"
If you found objects with "refs 4" property, triangulate them in Blender by searching them at the "Outliner" module and export your track again
If you find objects with "refs 2" then duplicate the last vertex point at the source and change "refs 2" to "refs 3"

After all checks are done and your track source is error free, try to add shading with:
```
sd-accc +shad YourTrackSourceAC3D.ac YourTrackSourceAC3D-shade.ac
```
Open the YourTrackSourceAC3D-shade.ac in your favorite text editor and replace "shadow2.rgb" with "shadow2.png"

Now combine your track source with track shading:

sd-accc -g YourTrackSourceAC3D.acc -l0 YourTrackSourceAC3D.ac -l1 YourTrackSourceAC3D-shade.ac -d3 1000 -d2 500 -d1 300 -S 300 -es

After that you have to modify YourTrack.xml to load YourTrackSourceAC3D.acc instead of YourTrackSourceAC3D.ac:
```
<attstr name="3d description" val="chemisay.acc"/>
```
Test the shaded track and optimize the shadow2.png if necessary.

Sometimes trees look much better when you exclude them from shading, change the texture setting from:

texture "chm-trees_n.png" base
texture "shadow2.png" tiled
texture empty_texture_no_mapping skids
texture empty_texture_no_mapping shad

texture "chm-trees_n.png"

For the 2nd run of sd2-accc you need a utility called Stripe. It converts a polygonal model into triangle strips.
For Linux, download stripe.tar.gz from http://www.cs.sunysb.edu/~stripe/stripe.tar.gz and then compile & install the usual way (tar -zxvf stripe.tar.gz ; cd Stripe ; make ; sudo cp stripe /usr/local/bin/).
If you use Windows, stripe.exe can be donwloaded from Vicente's site - simply unzip and put stripe.exe into the same directory where is sd2-accc.exe is located.