AUTHORS: Zenja Solaja
COPYRIGHT: 2009 Haiku Inc
DESCRIPTION: Haiku version of the famous BeInc demo 3Dmov
Just drag'n'drop media files to the 3D objects
*/
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <Bitmap.h>
#include <TranslationUtils.h>
#include "GLUtility.h"
#include "ViewCube.h"
Cube scene
*********************************/
class Cube
{
public:
enum FACE
{
FACE_RIGHT,
FACE_LEFT,
FACE_FRONT,
FACE_BACK,
FACE_TOP,
FACE_BOTTOM,
NUMBER_CUBE_FACES,
};
Cube(const float half_extent);
~Cube();
void Render();
void SetMediaSource(FACE face, MediaSource *source) {fMediaSources[face] = source;}
void SetAngle(float angle_x, float angle_y, float angle_z);
private:
MediaSource *fMediaSources[NUMBER_CUBE_FACES];
float fRotationX, fRotationY, fRotationZ;
float *fGeometry;
};
ARGUMENTS: half_extent
RETURN: n/a
DESCRIPTION: Constructor
*/
Cube :: Cube(const float half_extent)
{
for (int i=0; i < NUMBER_CUBE_FACES; i++)
fMediaSources[i] = 0;
fRotationX = fRotationY = fRotationZ = 0;
const float kVertices[NUMBER_CUBE_FACES][4][3] =
{
{
{half_extent, -half_extent, -half_extent},
{half_extent, half_extent, -half_extent},
{half_extent, -half_extent, half_extent},
{half_extent, half_extent, half_extent},
},
{
{-half_extent, half_extent, -half_extent},
{-half_extent, -half_extent, -half_extent},
{-half_extent, half_extent, half_extent},
{-half_extent, -half_extent, half_extent},
},
{
{-half_extent, -half_extent, -half_extent},
{half_extent, -half_extent, -half_extent},
{-half_extent, -half_extent, half_extent},
{half_extent, -half_extent, half_extent},
},
{
{half_extent, half_extent, -half_extent},
{-half_extent, half_extent, -half_extent},
{half_extent, half_extent, half_extent},
{-half_extent, half_extent, half_extent},
},
{
{-half_extent, -half_extent, half_extent},
{half_extent, -half_extent, half_extent},
{-half_extent, half_extent, half_extent},
{half_extent, half_extent, half_extent},
},
{
{-half_extent, half_extent, -half_extent},
{half_extent, half_extent, -half_extent},
{-half_extent, -half_extent, -half_extent},
{half_extent, -half_extent, -half_extent},
},
};
fGeometry = new float [sizeof(kVertices)/sizeof(float)];
memcpy(fGeometry, kVertices, sizeof(kVertices));
}
ARGUMENTS: n/a
RETURN: n/a
DESCRIPTION: Destructor - fMediaSources owned by ViewCube
*/
Cube :: ~Cube()
{
delete [] fGeometry;
}
ARGUMENTS: angle_x
angle_y
angle_z
RETURN: n/a
DESCRIPTION: Rotate cube by Euler angles
*/
void Cube :: SetAngle(float angle_x, float angle_y, float angle_z)
{
fRotationX = angle_x;
fRotationY = angle_y;
fRotationZ = angle_z;
}
ARGUMENTS: none
RETURN: n/a
DESCRIPTION: Draw sphere
*/
void Cube :: Render()
{
const float kTextureCoords[4*2] =
{
0.0f, 1.0f,
1.0f, 1.0f,
0.0f, 0.0f,
1.0f, 0.0f,
};
glPushMatrix();
glRotatef(fRotationX, 1, 0, 0);
glRotatef(fRotationY, 0, 1, 0);
glRotatef(fRotationZ, 0, 0, 1);
glColor4f(1,1,1,1);
for (int i=0; i < NUMBER_CUBE_FACES; i++)
{
glBindTexture(GL_TEXTURE_2D, fMediaSources[i]->mTextureID);
glTexCoordPointer(2, GL_FLOAT, 0, kTextureCoords);
glVertexPointer(3, GL_FLOAT, 0, fGeometry + i*3*4);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
}
glPopMatrix();
}
ViewCube
*********************************/
ARGUMENTS: frame
RETURN: n/a
DESCRIPTION: Constructor
*/
ViewCube :: ViewCube(BRect frame)
: ViewObject(frame)
{
fStartTime = real_time_clock_usecs();
for (int i=0; i < NUMBER_FACES; i++)
fMediaSources[i] = 0;
fCube = 0;
fSpeed = 10;
fMouseTracking = false;
}
ARGUMENTS: n/a
RETURN: n/a
DESCRIPTION: Destructor
*/
ViewCube :: ~ViewCube()
{
delete fCube;
for (int i=0; i < NUMBER_FACES; i++)
{
if (fMediaSources[i] != GetDefaultMediaSource())
delete fMediaSources[i];
}
}
ARGUMENTS: none
RETURN: n/a
DESCRIPTION: Hook function called when view attached to window (looper)
*/
void ViewCube :: AttachedToWindow(void)
{
ViewObject::AttachedToWindow();
LockGL();
glClearColor(0,0,0,1);
fCube = new Cube(0.075f);
for (int i=0; i < NUMBER_FACES; i++)
{
fMediaSources[i] = GetDefaultMediaSource();
fCube->SetMediaSource((Cube::FACE) i, fMediaSources[i]);
}
UnlockGL();
}
ARGUMENTS: none
RETURN: n/a
DESCRIPTION: Draw view contents
*/
void ViewCube :: Render(void)
{
LockGL();
bigtime_t current_time = real_time_clock_usecs();
bigtime_t delta = current_time - fStartTime;
fStartTime = current_time;
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
fCubeAngle += fSpeed*(float)delta/1000000.0f;
fCube->SetAngle(0, 0, fCubeAngle);
glPushMatrix();
glTranslatef(0.0f, 0.0f, 0.15f);
fCube->Render();
glPopMatrix();
glFlush();
SwapBuffers();
static int fps = 0;
static int time_delta = 0;
fps++;
time_delta += delta;
if (time_delta > 1000000)
{
printf("%d fps\n", fps);
fps = 0;
time_delta = 0;
}
*/
UnlockGL();
}
ARGUMENTS: p
RETURN: n/a
DESCRIPTION: Hook function called when mouse down detected
*/
void ViewCube :: MouseDown(BPoint p)
{
BMessage* msg = Window()->CurrentMessage();
uint32 buttons;
msg->FindInt32("buttons", (int32*)&buttons);
if (buttons & B_PRIMARY_MOUSE_BUTTON)
{
SetMouseEventMask(B_POINTER_EVENTS, B_LOCK_WINDOW_FOCUS | B_NO_POINTER_HISTORY);
fMouseTracking = true;
fMousePosition = p;
}
}
ARGUMENTS: p
transit
message
RETURN: n/a
DESCRIPTION: Hook function called when mouse move detected
*/
void ViewCube :: MouseMoved(BPoint p, uint32 transit, const BMessage *message)
{
if (fMouseTracking)
{
if (transit == B_INSIDE_VIEW)
{
fSpeed = 5.0f*(p.x - fMousePosition.x);
fMousePosition = p;
}
}
}
ARGUMENTS: p
RETURN: n/a
DESCRIPTION: Hook function called when mouse up detected
*/
void ViewCube :: MouseUp(BPoint p)
{
fMouseTracking = false;
}
ARGUMENTS: texture_id
mouse_x
mouse_y
RETURN: true if source ownership acquired
DESCRIPTION: Hook function called when user drags/drops image to app window.
TODO - actually determine exact face where refs received. For this
release, we only rely on current fCubeAngle.
*/
bool ViewCube :: SurfaceUpdate(MediaSource *source, float mouse_x, float mouse_y)
{
BRect frame = Bounds();
Cube::FACE face = Cube::NUMBER_CUBE_FACES;
if (mouse_y < frame.Height()*0.33f)
face = Cube::FACE_TOP;
else
{
if (fCubeAngle < 45)
face = Cube::FACE_FRONT;
else if (fCubeAngle < 135)
face = Cube::FACE_LEFT;
else if (fCubeAngle < 225)
face = Cube::FACE_BACK;
else if (fCubeAngle < 315)
face = Cube::FACE_RIGHT;
else
face = Cube::FACE_FRONT;
}
if (fMediaSources[face] != GetDefaultMediaSource())
delete fMediaSources[face];
fMediaSources[face] = source;
fCube->SetMediaSource(face, source);
return true;
}
