fixed layer bugs; generalized octree

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

diff --git a/src/Moof/Transition.hh b/src/Moof/Transition.hh
new file mode 100644 (file)
index 0000000..cf1595c
--- /dev/null
+++ b/src/Moof/Transition.hh
@@ -0,0 +1,177 @@
+
+/*******************************************************************************
+
+ Copyright (c) 2009, Charles McGarvey
+ All rights reserved.
+ 
+ Redistribution   and   use  in  source  and  binary  forms,  with  or  without
+ modification, are permitted provided that the following conditions are met:
+ 
+   * Redistributions  of  source  code  must retain the above copyright notice,
+     this list of conditions and the following disclaimer.
+   * Redistributions  in binary form must reproduce the above copyright notice,
+     this  list of conditions and the following disclaimer in the documentation
+     and/or other materials provided with the distribution.
+ 
+ THIS  SOFTWARE  IS  PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND  ANY  EXPRESS  OR  IMPLIED  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED.  IN  NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ FOR  ANY  DIRECT,  INDIRECT,  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES  (INCLUDING,  BUT  NOT  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ SERVICES;  LOSS  OF  USE,  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ CAUSED  AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ OR  TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*******************************************************************************/
+
+#ifndef _MOOF_TRANSITION_HH_
+#define _MOOF_TRANSITION_HH_
+
+#include <boost/shared_ptr.hpp>
+
+#include <Moof/Engine.hh>
+#include <Moof/Interpolator.hh>
+#include <Moof/Layer.hh>
+#include <Moof/Log.hh>
+#include <Moof/Math.hh>
+#include <Moof/OpenGL.hh>
+#include <Moof/Texture.hh>
+
+
+namespace Mf {
+
+
+template <typename T>
+class Transition : public Layer
+{
+       LayerP  to;
+       LayerP  from;
+
+       T               interpolator;
+
+       Engine* engine;
+
+public:
+
+       Transition(LayerP t, LayerP f, const T& interp) :
+               to(t),
+               from(f),
+               interpolator(interp),
+               engine(0) {}
+
+       typedef boost::shared_ptr<Transition> Ptr;
+
+       static Ptr alloc(LayerP t, LayerP f, const T& interp)
+       {
+               return Ptr(new Transition(t, f, interp));
+       }
+
+
+       void pushed(Engine& e)
+       {
+               engine = &e;
+       }
+
+       void popped(Engine& e)
+       {
+               if (to) e.push(to);
+       }
+
+       void update(Scalar t, Scalar dt)
+       {
+               interpolator.update(t, dt);
+
+               if (from) from->update(t, dt);
+               if (to) to->update(t, dt);
+
+               if (interpolator.isDone())
+               {
+                       // to should /replace/ this
+                       engine->pop(this);
+               }
+       }
+
+       void drawFade(Scalar alpha) const
+       {
+               // DRAW FADE
+               glDisable(GL_DEPTH_TEST);
+               glDisable(GL_ALPHA_TEST);
+               glEnable(GL_BLEND);
+               glMatrixMode(GL_PROJECTION);
+               glPushMatrix();
+               glLoadIdentity();
+               glMatrixMode(GL_MODELVIEW);
+               glPushMatrix();
+               glLoadIdentity();
+               glColor4(1.0, 1.0, 1.0, alpha);
+               Mf::Texture::resetBind();
+
+               //glRectf(-1.0f, -1.0f, 1.0f, 1.0f);
+               glBegin(GL_QUADS);
+                       glVertex3f(-1.0, -1.0, -0.1);
+                       glVertex3f(1.0, -1.0, -0.1);
+                       glVertex3f(1.0, 1.0, -0.1);
+                       glVertex3f(-1.0, 1.0, -0.1);
+               glEnd();
+
+               glDisable(GL_BLEND);
+               glEnable(GL_DEPTH_TEST);
+               glEnable(GL_ALPHA_TEST);
+
+               glMatrixMode(GL_PROJECTION);
+               glPopMatrix();
+               glMatrixMode(GL_MODELVIEW);
+               glPopMatrix();
+       }
+
+       void draw(Scalar alpha) const
+       {
+               Scalar a = interpolator.getState(alpha);
+               logInfo("draw state: %f", a);
+
+               //glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+               if (from)
+               {
+                       glPushMatrix();
+                       glLoadIdentity();
+                       glRotate(180.0 * a, 0.0, 1.0, 0.0);
+                       from->draw(alpha);
+                       glPopMatrix();
+               }
+                       //drawFade(a);
+
+               if (to)
+               {
+                       glPushMatrix();
+                       glLoadIdentity();
+                       glRotate(180.0 * (1.0 - a), 0.0, 1.0, 0.0);
+                       to->draw(alpha);
+                       glPopMatrix();
+               }
+                       //drawFade(1.0 - a);
+       }
+
+       bool handleEvent(const Event& event)
+       {
+               if (to)
+               {
+                       return to->handleEvent(event);
+               }
+               else if (from)
+               {
+                       return from->handleEvent(event);
+               }
+               return false;
+       }
+};
+
+
+} // namespace Mf
+
+#endif // _MOOF_TRANSITION_HH_
+
+/** vim: set ts=4 sw=4 tw=80: *************************************************/
+