source: orxonox.OLD/orxonox/branches/john/src/3dStructs.cc @ 2035

#include "3dStructs.h"
#include <GL/glut.h>

/* Debugging*/
#include <iostream.h>


void C3dModel::Draw(int g_ViewMode)
{
   /* This function draws the models, currently not all functions 
      supported */   

        for(int i = 0; i < numOfObjects; i++)
        {
                // Make sure we have valid objects just in case. (size() is in the vector class)
                if(pObject.size() <= 0) break;

                // Get the current object that we are displaying
                        
                // Check to see if this object has a texture map, if so bind the texture to it.
                if(pObject[i].bHasTexture) {

                        // Turn on texture mapping and turn off color
                        glEnable(GL_TEXTURE_2D);

                        // Reset the color to normal again
                        glColor3ub(255, 255, 255);

                        // Bind the texture map to the object by it's materialID
                        //glBindTexture(GL_TEXTURE_2D, g_Texture[pObject->materialID]);
                } else {

                        // Turn off texture mapping and turn on color
                        glDisable(GL_TEXTURE_2D);

                        // Reset the color to normal again
                        glColor3ub(255, 255, 255);
                }

                // This determines if we are in wireframe or normal mode
                glBegin(g_ViewMode);                                    // Begin drawing with our selected mode (triangles or lines)

                        // Go through all of the faces (polygons) of the object and draw them
                        for(int j = 0; j < pObject[i].iNumOfFaces; j++)
                        {
                                // Go through each corner of the triangle and draw it.
                                for(int whichVertex = 0; whichVertex < 3; whichVertex++)
                                {
                                        // Get the index for each point of the face
                                        int index = pObject[i].pFaces[j].vertIndex[whichVertex];
                        
                                        // Give OpenGL the normal for this vertex.
                                        glNormal3f(pObject[i].pNormals[ index ].x, pObject[i].pNormals[ index ].y, pObject[i].pNormals[ index ].z);
                                
                                        // If the object has a texture associated with it, give it a texture coordinate.
                                        if(pObject[i].bHasTexture) {

                                                // Make sure there was a UVW map applied to the object or else it won't have tex coords.
                                                if(pObject[i].pTexVerts) {
                                                        glTexCoord2f(pObject[i].pTexVerts[ index ].x, pObject[i].pTexVerts[ index ].y);
                                                }
                                        } else {

                                                // Make sure there is a valid material/color assigned to this object.
                                                // You should always at least assign a material color to an object, 
                                                // but just in case we want to check the size of the material list.
                                                // if the size is at least one, and the material ID != -1,
                                                // then we have a valid material.
                                                if(pMaterials.size() && pObject[i].materialID >= 0) 
                                                {
                                                        // Get and set the color that the object is, since it must not have a texture
                                                        char *pColor = pMaterials[pObject[i].materialID].color;

                                                        // Assign the current color to this model
                                                        glColor3ub(pColor[0], pColor[1], pColor[2]);
                                                }
                                        }

                                        // Pass in the current vertex of the object (Corner of current face)
                                        glVertex3f(pObject[i].pVerts[ index ].x, pObject[i].pVerts[ index ].y, pObject[i].pVerts[ index ].z);
                                }
                        }

                glEnd();                                                                // End the drawing
        }
}

/* Just a debugging function */
void C3dModel::PrintProperties()
{
   printf( "Number of objects: %i\n", numOfObjects);
   printf( "Number of materials: %i\n", numOfMaterials);
   for( int i; i < numOfObjects; i++ )
   {
      printf( "Object Number %i:\n", i );   
      printf( "Number of Vertices: %i\n", pObject[i].iNumOfVerts);
      printf( "Number of Faces: %i\n", pObject[i].iNumOfFaces);
      printf( "Number of Texture Materials: %i\n", pObject[i].iNumTexVertex);
      printf( "Has a texture: %i\n", pObject[i].bHasTexture);   
   }
}