experimental shapes hierarchy and raycasting

[chaz/yoink] / src / Moof / Aabb.hh

diff --git a/src/Moof/Aabb.hh b/src/Moof/Aabb.hh
index 6a7e064c41116c65e611d6f0ced6c81ed7272942..83926b3fa47789e19a85ed9124c9bef61bd89fca 100644 (file)
--- a/src/Moof/Aabb.hh
+++ b/src/Moof/Aabb.hh
@@ -33,6 +33,11 @@
 #include <Moof/Drawable.hh>
 #include <Moof/Math.hh>
 #include <Moof/Plane.hh>
+#include <Moof/Shape.hh>
+
+#include <Moof/Frustum.hh>
+#include <Moof/OpenGL.hh>
+#include <Moof/Texture.hh>
 
 
 namespace Mf {
@@ -42,14 +47,17 @@ namespace Mf {
  * Axis-aligned Bounding Box
  */
 
-struct Aabb : public Cullable, public Drawable
+template <int D = 3>
+struct Aabb : public Cullable, public Drawable, public Shape<D>
 {
-       Vector3 min;
-       Vector3 max;
+       typedef cml::vector< Scalar, cml::fixed<D> >    Vector;
+
+       Vector min;
+       Vector max;
 
        Aabb() {}
 
-       Aabb(const Vector3& a, const Vector3& b)
+       Aabb(const Vector& a, const Vector& b)
        {
                init(a, b);
        }
@@ -57,13 +65,13 @@ struct Aabb : public Cullable, public Drawable
        Aabb(Scalar ax, Scalar ay, Scalar az,
                        Scalar bx, Scalar by, Scalar bz)
        {
-               Vector3 a(ax, ay, az);
-               Vector3 b(bx, by, bz);
+               Vector a(ax, ay, az);
+               Vector b(bx, by, bz);
 
                init(a, b);
        }
 
-       void init(const Vector3& a, const Vector3& b)
+       void init(const Vector& a, const Vector& b)
        {
                if (a[0] < b[0])
                {
@@ -97,19 +105,19 @@ struct Aabb : public Cullable, public Drawable
                }
        }
 
-       Vector3 getCenter() const
+       Vector getCenter() const
        {
-               return Vector3((min[0] + max[0]) / 2.0,
+               return Vector((min[0] + max[0]) / 2.0,
                                           (min[1] + max[1]) / 2.0,
                                           (min[2] + max[2]) / 2.0);
        }
 
-       void getOctant(Aabb& octant, int num) const;
+       //void getOctant(Aabb& octant, int num) const;
 
        Plane getPlaneXY() const
        {
                Plane plane;
-               plane.normal = Vector3(0.0, 0.0, 1.0);
+               plane.normal = Vector(0.0, 0.0, 1.0);
                plane.d = cml::dot(-plane.normal, getCenter());
                return plane;
        }
@@ -117,7 +125,7 @@ struct Aabb : public Cullable, public Drawable
        Plane getPlaneXZ() const
        {
                Plane plane;
-               plane.normal = Vector3(0.0, 1.0, 0.0);
+               plane.normal = Vector(0.0, 1.0, 0.0);
                plane.d = cml::dot(-plane.normal, getCenter());
                return plane;
        }
@@ -125,17 +133,84 @@ struct Aabb : public Cullable, public Drawable
        Plane getPlaneYZ() const
        {
                Plane plane;
-               plane.normal = Vector3(1.0, 0.0, 0.0);
+               plane.normal = Vector(1.0, 0.0, 0.0);
                plane.d = cml::dot(-plane.normal, getCenter());
                return plane;
        }
 
+       /*
        void getCorners(Vector3 corners[8]) const;
 
        void encloseVertices(const Vector3 vertices[], unsigned count);
 
        void draw(Scalar alpha = 0.0) const;
        bool isVisible(const Frustum& frustum) const;
+       */
+
+
+void getCorners(Vector corners[8]) const
+{
+       corners[0][0] = min[0]; corners[0][1] = min[1]; corners[0][2] = max[2];
+       corners[1][0] = max[0]; corners[1][1] = min[1]; corners[1][2] = max[2];
+       corners[2][0] = max[0]; corners[2][1] = max[1]; corners[2][2] = max[2];
+       corners[3][0] = min[0]; corners[3][1] = max[1]; corners[3][2] = max[2];
+       corners[4][0] = min[0]; corners[4][1] = min[1]; corners[4][2] = min[2];
+       corners[5][0] = max[0]; corners[5][1] = min[1]; corners[5][2] = min[2];
+       corners[6][0] = max[0]; corners[6][1] = max[1]; corners[6][2] = min[2];
+       corners[7][0] = min[0]; corners[7][1] = max[1]; corners[7][2] = min[2];
+}
+
+
+void encloseVertices(const Vector vertices[], unsigned count)
+{
+       min.zero();
+       max.zero();
+
+       for (unsigned i = 1; i < count; ++i)
+       {
+               min.minimize(vertices[i]);
+               max.maximize(vertices[i]);
+       }
+}
+
+
+void draw(Scalar alpha = 0.0) const
+{
+       Scalar vertices[] = {min[0], min[1], min[2],
+                                                min[0], max[1], min[2],
+                                                max[0], max[1], min[2],
+                                                max[0], min[1], min[2],
+                                                min[0], max[1], max[2],
+                                                min[0], min[1], max[2],
+                                                max[0], min[1], max[2],
+                                                max[0], max[1], max[2]};
+
+       GLubyte indices[] = {0, 1, 2, 3,
+                                                1, 2, 7, 4,
+                                                3, 0, 5, 6,
+                                                2, 3, 6, 7,
+                                                5, 0, 1, 4,
+                                                4, 5, 6, 7};
+
+       glEnableClientState(GL_VERTEX_ARRAY);
+       glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+       glVertexPointer(3, GL_SCALAR, 0, vertices);
+
+       glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+       Texture::resetBind();
+
+       glDrawElements(GL_QUADS, sizeof(indices), GL_UNSIGNED_BYTE, indices);
+
+       glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+       //glDisableClientState(GL_VERTEX_ARRAY);
+
+       glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+}
+
+bool isVisible(const Frustum& frustum) const
+{
+       return frustum.contains(*this);
+}
 };