add cube example

README.md

@@ -1,11 +1,59 @@
 # blender_io_export_psx_mesh
 
-Blender plugin to export a PSX mesh to an array in a C file.
+Blender <= 2.79c plugin to export a PSX mesh to an array in a C file.
 
-The meshes must be vertex colored for the plugin to work.
+# Install
 
-This file should be used with the example code provided here by Lameguy64 : (http://www.psxdev.net/forum/viewtopic.php?f=64&t=537&sid=f5d30dcfdef34bc9f4d644033ba93a98)
+Put the `io_export_psx_mesh.py` file in the addons folder of blender 2.79 :
 
-# Author 
+On Linux, that's :
 
+`~/.config/blender/2.79/scripts/addons`
+
+# Steps to load your mesh 
+
+Your mesh must be vertex colored for the plugin to work, and triangulated before export (Use & apply a triangulate modifier)
+
+Get the example by Lameguy64 from [here](http://psx.arthus.net/code/primdraw.7z)
+
+Edit the file to reflect the values in your exported .c file :
+
+For example, if you export the start cube after vertex painting and triangulation :
+
+lines 190 to 199 of the original file :
+
+```c
+		for (i=0; i<vec.len; i++) { 
+			
+			// Initialize the primitive and set its color values
+			SetPolyF3(&myPrims[ActivePage][myPrimNum]);
+			setRGB0(&myPrims[ActivePage][myPrimNum], vec_color[i].r, vec_color[i].g, vec_color[i].b);
+			
+			// Rotate, translate, and project the vectors and output the results into a primitive
+			OTz = RotTransPers(&vec_mesh[t], (long*)&myPrims[ActivePage][myPrimNum].x0, &p, &Flag);
+			OTz += RotTransPers(&vec_mesh[t+1], (long*)&myPrims[ActivePage][myPrimNum].x1, &p, &Flag);
+			OTz += RotTransPers(&vec_mesh[t+2], (long*)&myPrims[ActivePage][myPrimNum].x2, &p, &Flag);
+```
+
+become :
+
+```c
+		for (i=0; i<modelCube.len; i++) {
+			
+			// Initialize the primitive and set its color values
+			SetPolyF3(&myPrims[ActivePage][myPrimNum]);
+			setRGB0(&myPrims[ActivePage][myPrimNum], modelCube_color[i].r, modelCube_color[i].g, modelCube_color[i].b);
+			
+			// Rotate, translate, and project the vectors and output the results into a primitive
+            OTz = RotTransPers(&modelCube_mesh[modelCube_index[t]], (long*)&myPrims[ActivePage][myPrimNum].x0, &p, &Flag);
+			OTz += RotTransPers(&modelCube_mesh[modelCube_index[t+1]], (long*)&myPrims[ActivePage][myPrimNum].x1, &p, &Flag);
+			OTz += RotTransPers(&modelCube_mesh[modelCube_index[t+2]], (long*)&myPrims[ActivePage][myPrimNum].x2, &p, &Flag);
+
+```
+
+# Credits
+
+Author of the code example is [Lameguy64](https://github.com/Lameguy64)
 Original author of the plugin is TheDukeOfZill, 04-2014
+
+Original post : http://www.psxdev.net/forum/viewtopic.php?f=64&t=537&sid=f5d30dcfdef34bc9f4d644033ba93a98