// loads an object into the scene from a file
void loadObjectFromFile(string filename) {
// declare current object
struct ObjectInstance curObject;
// load object
SceneLoader sceneLoader;
int objId = sceneLoader.loadAndAddObject(filename);
int NumVertices = sceneLoader.objects[objId].faces.size();
NumVertices = NumVertices * 3;
cout << NumVertices << endl;
curObject.points = new point4[NumVertices];
curObject.normals = new vec4[NumVertices];
Index = 0;
for (unsigned int j = 0; j < sceneLoader.objects[objId].faces.size(); j++) {
myFunc(sceneLoader.objects[objId], sceneLoader.objects[objId].faces[j],
curObject);
}
// Create a vertex array object
GLuint vao;
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
// fill in rest of details for object and add to list
curObject.vaoID = vao;
curObject.numVertices = NumVertices;
curObject.selectionR = idcount; ///Really only using red component to store unique id!
printf("Set red component to %d\n", curObject.selectionR);
curObject.selectionG = 0;
curObject.selectionB = 0;
curObject.selectionA = 255;
curObject.translate = Translate(0, 0, 0);
curObject.rotate = RotateX(0);
curObject.scale = Scale(1, 1, 1);
myObjects.push_back(curObject);
counter++;
idcount++;
// Create and initialize a buffer object
GLuint buffer;
glGenBuffers(1, &buffer);
glBindBuffer( GL_ARRAY_BUFFER, buffer);
int pointsSize = NumVertices * sizeof(point4);
int normalzSize = NumVertices * sizeof(vec4);
glBufferData( GL_ARRAY_BUFFER, pointsSize + normalzSize,
NULL, GL_STATIC_DRAW);
glBufferSubData( GL_ARRAY_BUFFER, 0, pointsSize, curObject.points);
glBufferSubData( GL_ARRAY_BUFFER, pointsSize, normalzSize,
curObject.normals);
// set up vertex arrays
GLuint vPosition = glGetAttribLocation(mainShaderProgram, "vPosition");
glEnableVertexAttribArray(vPosition);
glVertexAttribPointer(vPosition, 4, GL_FLOAT, GL_FALSE, 0,
BUFFER_OFFSET(0));
GLuint vNormal = glGetAttribLocation(mainShaderProgram, "vNormal");
glEnableVertexAttribArray(vNormal);
glVertexAttribPointer(vNormal, 4, GL_FLOAT, GL_FALSE, 0,
BUFFER_OFFSET(pointsSize));
display();
}
