first commit

CS4451/proj4/FileReader.cpp

@@ -0,0 +1,173 @@
+#include "FileReader.h"
+
+#include <stdlib.h>
+
+#include <vector>
+#include <iostream>
+
+#include <assert.h>
+
+#include <math.h>
+
+//#include "defs.h"
+
+using namespace std;
+
+void FileReader::parseFile(Renderer &r) {
+    parseFile(r.spheres,r.triangles,r.lights,&r.viewport,&r.h,&r.v,&r.l,r.ambient);
+}
+
+void FileReader::parseFile(vector<Sphere*> *spheres, 
+                           vector<Triangle*> *triangles, vector<Light*> *lights,
+                           Point *viewport, Point *h, Point *v, Point *l, m_float &ambient)
+{
+    char *input = (char*) malloc(sizeof(char)*81);
+    
+    //Skip the Image Dimensions, 800x800 is where its at
+    cin.getline(input,81);
+    //Viewpoint Location
+    scanPoint(viewport,input);
+    //l vector
+    scanPoint(l,input);
+    //h vector
+    scanPoint(h,input);
+    //v vector
+    scanPoint(v,input);
+    
+    //light source
+    Light *light = new Light();//(Light*)malloc(sizeof(Light));
+    scanLight(light,input);
+    lights->push_back(light);
+
+    //Ambient Light intensity
+    cin.getline(input,81);
+    ambient = strtod(input, NULL);
+
+    //Get Primitives
+    cin.getline(input,81);
+    scanPrimitives(strtol(input,NULL,10), spheres, triangles, input);
+
+}
+
+void FileReader::scanPrimitives(int count, vector<Sphere*> *spheres, 
+                                vector<Triangle*> *triangles, char *input)
+{
+    int i;
+
+    for (i = 0; i < count; i++) {
+        cin.getline(input,81);
+
+        switch (input[0]) {
+            case 'S': {
+                Sphere* sphere = new Sphere();
+                
+                scanSphere(sphere,input);
+                
+                spheres->push_back(sphere);
+
+                //sphere->printMe();
+
+                break;
+            }
+
+            case 'T': {
+                Triangle* triangle = new Triangle();
+
+                scanTriangle(triangle,input);
+
+                triangles->push_back(triangle);
+                
+                break;
+            }
+
+            default:
+                cout << "Error bad\n";
+                break;
+
+        };
+    }
+    
+
+}
+
+void FileReader::scanMaterials(MaterialAttributes &attrib, char *input) {
+    char *pEnd;
+
+    cin.getline(input,81);
+
+    attrib.k_dr = strtod(input,&pEnd);
+    attrib.k_dg = strtod(pEnd,&pEnd);
+    attrib.k_db = strtod(pEnd,&pEnd);
+    attrib.k_ar = strtod(pEnd,&pEnd);
+    attrib.k_ag = strtod(pEnd,&pEnd);
+    attrib.k_ab = strtod(pEnd,&pEnd);
+    attrib.k_s = strtod(pEnd,&pEnd);
+    attrib.n_spec = strtod(pEnd,NULL);
+}
+
+void FileReader::scanLight(Light *light, char *input) {
+    char* pEnd;
+    
+    cin.getline(input,81);
+    light->center.x = strtod(input, &pEnd);
+    light->center.y = strtod(pEnd, &pEnd);
+    light->center.z = strtod(pEnd, &pEnd);
+ 
+    //For proper orientation
+    if (Renderer::getInstance()->viewport.z - Renderer::getInstance()->l.z < 0) {
+        light->center.x *= -1.;
+    }
+
+    light->intensity = strtod(pEnd, NULL);
+}
+
+void FileReader::scanSphere(Sphere *sphere, char *input) {
+    //Sphere* sphere = new Sphere();
+
+    char *pEnd;
+
+    assert(sphere != NULL);
+    
+    cin.getline(input,81);
+    sphere->center.x = strtod(input, &pEnd);
+    sphere->center.y = strtod(pEnd, &pEnd);
+    sphere->center.z = strtod(pEnd, &pEnd);
+
+    if (Renderer::getInstance()->viewport.z - Renderer::getInstance()->l.z < 0) {
+        sphere->center.x *= -1.;
+    }
+
+    sphere->radius = fabs(strtod(pEnd,NULL));
+                
+    scanMaterials(sphere->m_attr, input);
+
+    //primitives.push_back(sphere);
+}
+
+void FileReader::scanTriangle(Triangle *triangle, char *input) {
+    //Triangle* triangle = new Triangle();
+
+    assert(triangle != NULL);
+
+    scanPoint(&triangle->a1,input);
+    scanPoint(&triangle->a2,input);
+    scanPoint(&triangle->a3,input);
+    
+    if (Renderer::getInstance()->viewport.z - Renderer::getInstance()->l.z < 0) {
+        triangle->a1.x *= -1.;
+        triangle->a2.x *= -1.;
+        triangle->a3.x *= -1.;
+    }
+
+    scanMaterials(triangle->m_attr, input);
+}
+
+void FileReader::scanPoint(Point* point, char *input) {
+    char* pEnd;
+    
+    cin.getline(input, 81);
+    point->x = strtod(input,&pEnd);
+    point->y = strtod(pEnd,&pEnd);
+    point->z = strtod(pEnd,NULL);
+
+}