added --help option, updated util/Transform

git-svn-id: svn://anubis/fart/trunk@26 7f9b0f55-74a9-4bce-be96-3c2cd072584d

main/fart.cc

@@ -28,6 +28,7 @@ int main(int argc, char * argv[])
     map<string, const char *> scene_options;
 
     static const struct option long_options[] = {
+        { "help",           no_argument,       NULL, 256 },
         { "output-file",    required_argument, NULL, 'o' },
         { "width",          required_argument, NULL, 'w' },
         { "height",         required_argument, NULL, 'h' },
@@ -41,6 +42,9 @@ int main(int argc, char * argv[])
     {
         switch (opt)
         {
+            case 256:
+                usage(argv[0]);
+                break;
             case 'o':
                 scene_options["output-file"] = optarg;
                 break;

util/Transform.cc

@@ -1,12 +1,22 @@
 
 #include "Transform.h"
 
-void Transform::push()
+Transform::Transform()
 {
-    m_matrices.push(m_matrices.top());
+    m_matrix = Matrix::identity();
 }
 
-void Transform::pop()
+void Transform::translate(double x, double y, double z)
 {
-    m_matrices.pop();
+    /* TODO: fill in */
+}
+
+void Transform::rotate(double amt, double xv, double yv, double zv)
+{
+    /* TODO: fill in */
+}
+
+void Transform::scale(double xs, double ys, double zs)
+{
+    /* TODO: fill in */
 }

util/Transform.h

@@ -8,11 +8,13 @@
 class Transform
 {
     public:
-        void push();
+        Transform();
-        void pop();
+        void translate(double x, double y, double z);
+        void rotate(double amt, double xv, double yv, double zv);
+        void scale(double xs, double ys, double zs);
 
     protected:
-        std::stack<Matrix>  m_matrices;
+        Matrix m_matrix;
 };
 
 #endif