Started working on boundingboxes.

source/shapes/cone.cpp

@@ -122,3 +122,13 @@ Tuple Cone::localNormalAt(Tuple point)
     }
     return Vector(point.x, y, point.z);
 }
+
+BoundingBox Cone::getBounds()
+{
+    BoundingBox ret;
+
+    ret.min = this->objectToWorld(Point(-1, this->minCap, -1));
+    ret.max = this->objectToWorld(Point(1, this->maxCap, 1));
+
+    return ret;
+}

source/shapes/cylinder.cpp

@@ -107,3 +107,13 @@ Tuple Cylinder::localNormalAt(Tuple point)
 
     return Vector(point.x, 0, point.z);
 }
+
+BoundingBox Cylinder::getBounds()
+{
+    BoundingBox ret;
+
+    ret.min = this->objectToWorld(Point(-1, this->minCap, -1));
+    ret.max = this->objectToWorld(Point(1, this->maxCap, 1));
+
+    return ret;
+}

source/shapes/group.cpp

@@ -70,4 +70,31 @@ void Group::addObject(Shape *s)
 bool Group::isEmpty()
 {
     return (this->objectCount == 0);
+}
+
+BoundingBox Group::getBounds()
+{
+    BoundingBox ret;
+
+    if (this->objectCount > 0)
+    {
+        ret.min = Point(INFINITY, INFINITY, INFINITY);
+        ret.max = Point(-INFINITY, -INFINITY, -INFINITY);
+
+        int i;
+        for(i = 0; i < this->objectCount; i++)
+        {
+            BoundingBox obj = this->objectList[i]->getBounds();
+
+            if (ret.min.x > obj.min.x) {  ret.min.x = obj.min.x; }
+            if (ret.min.y > obj.min.y) {  ret.min.y = obj.min.y; }
+            if (ret.min.z > obj.min.z) {  ret.min.z = obj.min.z; }
+
+            if (ret.max.x < obj.max.x) {  ret.max.x = obj.max.x; }
+            if (ret.max.y < obj.max.y) {  ret.max.y = obj.max.y; }
+            if (ret.max.z < obj.max.z) {  ret.max.z = obj.max.z; }
+        }
+    }
+
+    return ret;
 }

source/shapes/plane.cpp

@@ -33,4 +33,14 @@ Intersect Plane::localIntersect(Ray r)
 Tuple Plane::localNormalAt(Tuple point)
 {
     return Vector(0, 1, 0);
+}
+
+BoundingBox Plane::getBounds()
+{
+    BoundingBox ret;
+
+    ret.min = this->objectToWorld(Point(-INFINITY, 0-getEpsilon(), -INFINITY));
+    ret.max = this->objectToWorld(Point(INFINITY, 0+getEpsilon(), INFINITY));
+
+    return ret;
 }

source/shapes/shape.cpp

@@ -65,3 +65,12 @@ void Shape::setTransform(Matrix transform)
     this->localTransformMatrix = transform;
     this->updateTransform();
 }
+
+BoundingBox Shape::getBounds()
+{
+    BoundingBox ret;
+
+    ret.min = this->objectToWorld(Point(-1, -1, -1));
+    ret.max = this->objectToWorld(Point(1, 1, 1));
+    return ret;
+}