void CMassView::Draw(BRect updateRect) // draw the view
{
if (!inGLMode)
{
//DrawBitmap(theBlitMap, updateRect, updateRect); // blit the bits
return;
} // end of simple case
else
{
LockGL(); // lock in preparation for drawing
GLfloat mNow[16]; // local matrix for ball routines
Ball_Update(&ball); // update the data for the ball
Ball_Value(&ball, mNow); // retrieve the ball's position as a matrix
glMatrixMode(GL_MODELVIEW); // make sure that we are set to the model matrix
glClearColor(0.0, 0.0, 0.0, 1.0); // and set the "clear" colour to black
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // clear the window to black
glPushMatrix(); // push the GL stack to get a new matrix
glLoadIdentity(); // load the identity matrix
glTranslatef(0, 0, -600.0); // translate the model matrix
glMultMatrixf(mNow); // multiply by this matrix
glEnable(GL_TEXTURE_2D); // enable 2D textures
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); // set the vertical (?) wrap
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); // and the horizontal
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); // set magnification filter
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); // set shrinking filter
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, theBlitMap->Bounds().Width() + 1, theBlitMap->Bounds().Height() + 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, theBlitMap->Bits());
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); // just stick the texture on
glBindTexture(GL_TEXTURE_2D, texName); // bind the texture to the name (again?)
glCallList(torusDisplayListID); // and call the display list
glPopMatrix(); // pop the matrix back off the stack
SwapBuffers(); // swap the buffers to draw it
glDisable(GL_TEXTURE_2D); // switch textures back off
UnlockGL(); // unlock GL
} // end of GL case
} // end of Draw()
void
learnView::AttachedToWindow()
{
BGLView::AttachedToWindow();
LockGL();
glClearColor(0.0, 0.0, 0.0, 0.0);
glShadeModel(GL_FILL);
// glShadeModel(GL_SMOOTH);
//glEnable(GL_DEPTH_TEST);
//glEnable(GL_BLEND);
//glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glViewport( 0, 0, (GLsizei)Bounds().Width(), (GLsizei)Bounds().Height() );
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glFrustum(-1.0, 1.0, -1.0, 1.0, 1.5, 20.0);
glMatrixMode(GL_MODELVIEW);
UnlockGL();
// start a thread to compute the board generations
lifeTID = spawn_thread((thread_entry)lifeThread, "lifeThread",
B_NORMAL_PRIORITY, this);
resume_thread(lifeTID);
// start a thread which does all of the drawing
drawTID = spawn_thread((thread_entry)drawThread, "drawThread",
B_NORMAL_PRIORITY, this);
resume_thread(drawTID);
// Start 'er up!
continuous = true;
Start();
}
/* FUNCTION: ViewBook :: DragDropImage
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
*/
bool ViewBook :: SurfaceUpdate(MediaSource *source, float mouse_x, float mouse_y)
{
Paper::TEXTURE_SIDE side = Paper::UNASSIGNED_TEXTURE;
Paper *page = GetPage(mouse_x, mouse_y, (int *)&side);
LockGL();
int index = -1;
if (page == fPages[PAGE_LEFT])
index = 0;
else if (page == fPages[PAGE_RIGHT])
index = 3;
else if (page == fPages[PAGE_MIDDLE])
{
if (side == Paper::FRONT_TEXTURE)
index = 1;
else if (side == Paper::BACK_TEXTURE)
index = 2;
}
if (index >= 0)
{
if (fMediaSources[index] != GetDefaultMediaSource())
delete fMediaSources[index];
}
page->SetMediaSource(side, source);
fMediaSources[index] = source;
UnlockGL();
return true;
}
virtual void Render() {
printf("Render\n");
LockGL();
//game_->run();
SwapBuffers(true);
UnlockGL();
}
/* FUNCTION: ViewObject :: GLCreateTexture
ARGUMENTS: bitmap
RETURN: OpenGL texture reference
DESCRIPTION: Create an OpenGL texture from a BBitmap.
The client takes ownership of the create media source.
*/
void ViewObject :: GLCreateTexture(MediaSource *media, BBitmap *bitmap)
{
assert(media != 0);
assert(bitmap != 0);
LockGL();
glGenTextures(1, &media->mTextureID);
glBindTexture(GL_TEXTURE_2D, media->mTextureID);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
int num_bytes;
GLDetermineFormat(bitmap->ColorSpace(), &media->mTextureFormat, &num_bytes);
media->mTextureWidth = (int)(bitmap->Bounds().Width() + 1);
media->mTextureHeight = (int)(bitmap->Bounds().Height() + 1);
glTexImage2D(GL_TEXTURE_2D,
0, // mipmap level
num_bytes, // internal format
media->mTextureWidth, // width
media->mTextureHeight, // height
0, // border
media->mTextureFormat, // format of pixel data
GL_UNSIGNED_BYTE, // data type
(unsigned char *)bitmap->Bits()); // pixels
UnlockGL();
}
/* FUNCTION: ViewBook :: AttachedToWindow
ARGUMENTS: none
RETURN: n/a
DESCRIPTION: Hook function called when view attached to window (looper)
*/
void ViewBook :: AttachedToWindow(void)
{
ViewObject::AttachedToWindow();
LockGL();
glClearColor(0,0,0,1);
fPages[PAGE_MIDDLE] = new Paper(kPageWidth, kPageHeight, Paper::FRONT_AND_BACK_FACING);
fPages[PAGE_LEFT] = new Paper(kPageWidth, kPageHeight, Paper::FRONT_FACING);
fPages[PAGE_RIGHT] = new Paper(kPageWidth, kPageHeight, Paper::BACK_FACING);
for (int i=0; i < NUMBER_SOURCES; i++)
fMediaSources[i] = GetDefaultMediaSource();
MediaSource *default_source = GetDefaultMediaSource();
// left page
fPages[PAGE_LEFT]->SetMediaSource(Paper::FRONT_TEXTURE, fMediaSources[0]);
// middle page
fPages[PAGE_MIDDLE]->SetMediaSource(Paper::FRONT_TEXTURE, fMediaSources[1]);
fPages[PAGE_MIDDLE]->SetMediaSource(Paper::BACK_TEXTURE, fMediaSources[2]);
// right page
fPages[PAGE_RIGHT]->SetMediaSource(Paper::BACK_TEXTURE, fMediaSources[3]);
fPages[PAGE_RIGHT]->SetAngle(180);
UnlockGL();
}
void SampleGLView::Render(void)
{
LockGL();
gDraw(rotate);
SwapBuffers();
UnlockGL();
}
int
ObjectView::ObjectAtPoint(const BPoint &point)
{
LockGL();
glShadeModel(GL_FLAT);
glDisable(GL_LIGHTING);
glDisable(GL_FOG);
glClearColor(black[0], black[1], black[2], 1.0);
glClear(GL_COLOR_BUFFER_BIT | (fZbuf ? GL_DEPTH_BUFFER_BIT : 0));
float idColor[3];
idColor[1] = idColor[2] = 0;
for (int i = 0; i < fObjects.CountItems(); i++) {
// to take into account 16 bits colorspaces,
// only use the 5 highest bits of the red channel
idColor[0] = (255 - (i << 3)) / 255.0;
reinterpret_cast<GLObject*>(fObjects.ItemAt(i))->Draw(true, idColor);
}
glReadBuffer(GL_BACK);
uchar pixel[256];
glReadPixels((GLint)point.x, (GLint)(Bounds().bottom - point.y), 1, 1,
GL_RGB, GL_UNSIGNED_BYTE, pixel);
int objNum = pixel[0];
objNum = (255 - objNum) >> 3;
EnforceState();
UnlockGL();
return objNum;
}
/* FUNCTION: ViewObject :: UpdateFrame
ARGUMENTS: source
RETURN: n/a
DESCRIPTION: Called by Video thread - update video texture
*/
void ViewObject :: UpdateFrame(MediaSource *source)
{
LockGL();
glBindTexture(GL_TEXTURE_2D, source->mTextureID);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, source->mTextureWidth, source->mTextureHeight,
source->mTextureFormat, GL_UNSIGNED_BYTE, source->mVideo->GetBitmap()->Bits());
UnlockGL();
}
/* FUNCTION: ViewObject :: ToggleWireframe
ARGUMENTS: enable
RETURN: n/a
DESCRIPTION: Switch beteeen wireframe and fill polygon modes
*/
void ViewObject :: ToggleWireframe(bool enable)
{
LockGL();
if (enable)
glPolygonMode(GL_FRONT, GL_LINE);
else
glPolygonMode(GL_FRONT, GL_FILL);
UnlockGL();
}
void SampleGLView::AttachedToWindow(void)
{
BGLView::AttachedToWindow();
LockGL();
gInit();
gReshape(width, height);
UnlockGL();
MakeFocus();
}
/* FUNCTION: ViewBook :: Render
ARGUMENTS: none
RETURN: n/a
DESCRIPTION: Draw view contents
*/
void ViewBook :: 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);
// page freefall (gravity)
if (!fMouseTracking && (fPageAngle > kPageMinAngle) && (fPageAngle < kPageMaxAngle))
{
if (fPageAngle < 90)
fPageAngle -= 30*(float)delta/1000000.0f;
else
fPageAngle += 30*(float)delta/1000000.0f;
}
fPages[PAGE_MIDDLE]->SetAngle(fPageAngle);
// Draw pages
glPushMatrix();
glTranslatef(-0.5f*kPageWidth, 0.5f*kPageHeight, 0);
fPages[PAGE_MIDDLE]->Render();
glPopMatrix();
glPushMatrix();
glTranslatef(-0.5f*kPageWidth, 0.5f*kPageHeight, 0);
fPages[PAGE_LEFT]->Render();
glPopMatrix();
glPushMatrix();
glTranslatef(-0.5f*kPageWidth, 0.5f*kPageHeight, 0);
fPages[PAGE_RIGHT]->Render();
glPopMatrix();
glFlush();
SwapBuffers();
// Frame rate
/*
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();
}
void TutGLView::FrameResized( float width, float height )
{
// When the view is resized (it follows the window, since we created
// it with B_FOLLOW_ALL_SIDES), we need to tell OpenGL that it's
// rendering into a new size/shape.
LockGL();
BGLView::FrameResized( width, height );
gReshape( width, height );
UnlockGL();
Render();
}
/* FUNCTION: ViewObject :: Render
ARGUMENTS: none
RETURN: n/a
DESCRIPTION: Should be overriden by derived class
*/
void ViewObject :: Render(void)
{
LockGL();
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// derived class should draw something here
glFlush();
SwapBuffers();
UnlockGL();
}
void TutGLView::Render( void )
{
// Render our OpenGL scene and swap the buffer so we can actually see
// it.
LockGL();
gDraw();
if( _window->draw_mutex->Lock() ) {
if( _window->window_connected ) SwapBuffers();
_window->draw_mutex->Unlock();
}
UnlockGL();
}
void SampleGLView::FrameResized(float newWidth, float newHeight)
{
BGLView::FrameResized(newWidth, newHeight);
LockGL();
width = newWidth;
height = newHeight;
gReshape(width,height);
UnlockGL();
Render();
}
void
BGLView::FrameResized(float width, float height)
{
fBounds = Bounds();
for (BView *v = this; v; v = v->Parent())
v->ConvertToParent(&fBounds);
if (fRenderer) {
LockGL();
_LockDraw();
fRenderer->FrameResized(width, height);
_UnlockDraw();
UnlockGL();
}
BView::FrameResized(width, height);
}
/* FUNCTION: ViewCube :: ViewCube
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();
}
void TutGLView::AttachedToWindow( void )
{
// Make keyboard/mouse input go to this view when its window has
// focus (that'll stay in effect until another view calls MakeFocus()
// or the user puts the focus on a control... which won't happen in
// this app because there are no other views and no controls).
MakeFocus();
// Initialize OpenGL; gInit() sets things up, gReshape() makes sure
// OpenGL knows about the view's size/shape.
LockGL();
BGLView::AttachedToWindow();
gInit();
BRect r = Bounds();
gReshape( r.IntegerWidth(), r.IntegerHeight() );
UnlockGL();
}
/* FUNCTION: ViewObject :: AttachedToWindow
ARGUMENTS: none
RETURN: n/a
DESCRIPTION: Hook function called when view attached to window (looper)
*/
void ViewObject :: AttachedToWindow(void)
{
LockGL();
BGLView::AttachedToWindow();
// init OpenGL state
glClearColor(0, 0, 0, 1);
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
glEnable(GL_DEPTH_TEST);
glEnable(GL_TEXTURE_2D);
glDepthFunc(GL_LESS);
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
// init default texture (drag and drop media files)
if (sDefaultMediaSource == 0)
{
sDefaultImage = BTranslationUtils::GetBitmap(B_PNG_FORMAT, "instructions.png");
sDefaultMediaSource = new MediaSource(this);
glGenTextures(1, &sDefaultMediaSource->mTextureID);
glBindTexture(GL_TEXTURE_2D, sDefaultMediaSource->mTextureID);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
int num_bytes;
GLDetermineFormat(sDefaultImage->ColorSpace(), &sDefaultMediaSource->mTextureFormat, &num_bytes);
glTexImage2D(GL_TEXTURE_2D,
0, // mipmap level
num_bytes, // internal format
sDefaultImage->Bounds().IntegerWidth() + 1, // width
sDefaultImage->Bounds().IntegerHeight() + 1, // height
0, // border
sDefaultMediaSource->mTextureFormat, // format of pixel data
GL_UNSIGNED_BYTE, // data type
(unsigned char *) sDefaultImage->Bits()); // pixels
}
MakeFocus(true);
UnlockGL();
}
/* FUNCTION: ViewObject :: FrameResized
ARGUMENTS: width
height
RETURN: n/a
DESCRIPTION: Hook function called when view resized.
Since we have a static camera, we configure it here.
If we had a dynamic camera, then we'd have to reposition
the camera in the derived view.
*/
void ViewObject :: FrameResized(float width, float height)
{
LockGL();
BGLView::FrameResized(width, height);
glViewport(0, 0, (int)width, (int)height);
// Camera projection
glMatrixMode(GL_PROJECTION);
float m[16];
GLCreatePerspectiveMatrix(m, 30, width/height, 0.1f, 10);
glLoadMatrixf(m);
// Camera position
glMatrixMode(GL_MODELVIEW);
GLCreateModelViewMatrix(m, 0, -0.45f, 0.4f, 0, -30);
glLoadMatrixf(m);
UnlockGL();
}
void CMassView::AttachedToWindow() // called when added to window
{
GLfloat light_position[] = {0.0, 3.0, 4.0, 0.0}; // position of light source (at infinity)
GLfloat light_colour[] = {1.0, 1.0, 1.0, 0.0}; // colour of light source
GLfloat torus_colour[] = {1.0, 1.0, 1.0, 0.0}; // set the torus to green
// GLfloat torus_specular_colour[] = {1.0, 1.0, 1.0, 0.0}; // and set shininess up a little bit
BGLView::AttachedToWindow(); // call inherited attachment function
LockGL(); // make sure this is thread-safe
glMatrixMode(GL_PROJECTION); // first set up matrix for the viewing volume
glOrtho(-240.0, 240.0, -200.0, 200.0, -1000.0, 1000.0); // set the perspective
glMatrixMode(GL_MODELVIEW); // switch to matrix for basis vectors at eye
glLoadIdentity(); // load the identity matrix
glTranslatef(0, 0, -600.0); // translate the model matrix
// glRotatef(30.0, 0.0, 1.0, 0.0); // rotate the torus
torusPickListID = glGenLists(2); // set up a total of 1 display list
glNewList(torusPickListID, GL_COMPILE); // tell it to save the following calls
CreateTorus(100.0, 50.0, GL_SELECT); // set up a list for rendering
glEndList(); // close the list
glShadeModel(GL_SMOOTH); // use smooth lighting
glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, torus_colour); // set the colour of the torus
glLightfv(GL_LIGHT0, GL_POSITION, light_position); // specify the position of the light
glLightfv(GL_LIGHT0, GL_DIFFUSE, light_colour); // and the colour
glEnable(GL_LIGHTING); // switch lighting on
glEnable(GL_LIGHT0); // switch light #0 on
glEnable(GL_DEPTH_TEST); // make sure depth buffer is switched on
glEnable(GL_TEXTURE_2D); // enable 2D textures
glPixelStorei(GL_UNPACK_ALIGNMENT, 1); // set the pixel alignment
glGenTextures(1, &texName); // create the GL texture "name"
glBindTexture(GL_TEXTURE_2D, texName); // mark it as 2D
torusDisplayListID = torusPickListID + 1; // we know this name is available
glNewList(torusDisplayListID, GL_COMPILE); // tell it to save the following calls
CreateTorus(100.0, 50.0, GL_RENDER); // set up a list for rendering
glEndList(); // close the list
UnlockGL(); // unlock GL
FrameResized(Bounds().Width(), Bounds().Height());
} // end of AttachedToWindow()
/* FUNCTION: ViewObject :: GLCheckError
ARGUMENTS: none
RETURN: n/a
DESCRIPTION: Check for OpenGL errors
*/
void ViewObject :: GLCheckError()
{
GLenum err;
LockGL();
while ((err = glGetError()) != GL_NO_ERROR)
{
printf("[GL Error] ");
switch (err)
{
case GL_INVALID_ENUM: printf("GL_INVALID_ENUM\n"); break;
case GL_INVALID_VALUE: printf("GL_INVALID_VALUE\n"); break;
case GL_INVALID_OPERATION: printf("GL_INVALID_OPERATION\n"); break;
case GL_STACK_OVERFLOW: printf("GL_STACK_OVERFLOW\n"); break;
case GL_STACK_UNDERFLOW: printf("GL_STACK_UNDERFLOW\n"); break;
case GL_OUT_OF_MEMORY: printf("GL_OUT_OF_MEMORY\n"); break;
default: printf("%d\n", err); break;
}
}
UnlockGL();
}
void
ObjectView::FrameResized(float width, float height)
{
LockGL();
BGLView::FrameResized(width, height);
width = Bounds().Width();
height = Bounds().Height();
fYxRatio = height / width;
glViewport(0, 0, (GLint)width + 1, (GLint)height + 1);
// To prevent weird buffer contents
glClear(GL_COLOR_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
float scale = displayScale;
if (fPersp) {
gluPerspective(60, 1.0 / fYxRatio, 0.15, 120);
} else {
if (fYxRatio < 1) {
glOrtho(-scale / fYxRatio, scale / fYxRatio, -scale, scale, -1.0,
depthOfView * 4);
} else {
glOrtho(-scale, scale, -scale * fYxRatio, scale * fYxRatio, -1.0,
depthOfView * 4);
}
}
fLastYXRatio = fYxRatio;
glMatrixMode(GL_MODELVIEW);
UnlockGL();
fForceRedraw = true;
setEvent(drawEvent);
}
void learnView::Display()
{
#if 0
spinDisplay();
// xrotate = 45;
LockGL();
// glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glClear ( GL_COLOR_BUFFER_BIT );
glColor3f(1.0, 1.0, 1.0);
glLoadIdentity();
gluLookAt(0.0, 0.0, 5.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
glScalef(1.0, 1.0, 1.0);
glRotatef(xrotate, 1, 0, 0);
glRotatef(yrotate, 0, 1, 0);
DrawFrame();
glFlush();
//printf("calling swap buffers...\n");
SwapBuffers();
UnlockGL();
#endif
}
bool
ObjectView::RepositionView()
{
if (!(fPersp != fLastPersp) &&
!(fLastObjectDistance != fObjectDistance) &&
!(fLastYXRatio != fYxRatio)) {
return false;
}
LockGL();
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
float scale = displayScale;
if (fPersp) {
gluPerspective(60, 1.0 / fYxRatio, 0.15, 120);
} else {
if (fYxRatio < 1) {
glOrtho(-scale / fYxRatio, scale / fYxRatio, -scale, scale, -1.0,
depthOfView * 4);
} else {
glOrtho(-scale, scale, -scale * fYxRatio, scale * fYxRatio, -1.0,
depthOfView * 4);
}
}
glMatrixMode(GL_MODELVIEW);
UnlockGL();
fLastObjectDistance = fObjectDistance;
fLastPersp = fPersp;
fLastYXRatio = fYxRatio;
return true;
}
/* FUNCTION: ViewCube :: Render
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();
// Display frame rate
/*
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();
}
bool
ObjectView::SpinIt()
{
bool changed = false;
if (fGouraud != fLastGouraud) {
LockGL();
glShadeModel(fGouraud ? GL_SMOOTH : GL_FLAT);
UnlockGL();
fLastGouraud = fGouraud;
changed = true;
}
if (fZbuf != fLastZbuf) {
LockGL();
if (fZbuf)
glEnable(GL_DEPTH_TEST);
else
glDisable(GL_DEPTH_TEST);
UnlockGL();
fLastZbuf = fZbuf;
changed = true;
}
if (fCulling != fLastCulling) {
LockGL();
if (fCulling)
glEnable(GL_CULL_FACE);
else
glDisable(GL_CULL_FACE);
UnlockGL();
fLastCulling = fCulling;
changed = true;
}
if (fLighting != fLastLighting) {
LockGL();
if (fLighting)
glEnable(GL_LIGHTING);
else
glDisable(GL_LIGHTING);
UnlockGL();
fLastLighting = fLighting;
changed = true;
}
if (fFilled != fLastFilled) {
LockGL();
if (fFilled) {
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
} else {
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
}
UnlockGL();
fLastFilled = fFilled;
changed = true;
}
if (fFog != fLastFog) {
if (fFog) {
glFogf(GL_FOG_START, 1.0);
glFogf(GL_FOG_DENSITY, 0.2);
glFogf(GL_FOG_END, depthOfView);
glFogfv(GL_FOG_COLOR, foggy);
glEnable(GL_FOG);
bgColor = foggy;
glClearColor(bgColor[0], bgColor[1], bgColor[2], 1.0);
} else {
glDisable(GL_FOG);
bgColor = black;
glClearColor(bgColor[0], bgColor[1], bgColor[2], 1.0);
}
fLastFog = fFog;
changed = true;
}
changed = changed || RepositionView();
changed = changed || fForceRedraw;
fForceRedraw = false;
for (int i = 0; i < fObjects.CountItems(); i++) {
bool hack = reinterpret_cast<GLObject*>(fObjects.ItemAt(i))->SpinIt();
changed = changed || hack;
}
return changed;
}
void
ObjectView::DrawFrame(bool noPause)
{
LockGL();
glClear(GL_COLOR_BUFFER_BIT | (fZbuf ? GL_DEPTH_BUFFER_BIT : 0));
fObjListLock.Lock();
for (int i = 0; i < fObjects.CountItems(); i++) {
GLObject *object = reinterpret_cast<GLObject*>(fObjects.ItemAt(i));
if (object->Solidity() == 0)
object->Draw(false, NULL);
}
EnforceState();
for (int i = 0; i < fObjects.CountItems(); i++) {
GLObject *object = reinterpret_cast<GLObject*>(fObjects.ItemAt(i));
if (object->Solidity() != 0)
object->Draw(false, NULL);
}
fObjListLock.Unlock();
glDisable(GL_BLEND);
glDepthMask(GL_TRUE);
if (noPause) {
uint64 now = system_time();
float fps = 1.0 / ((now - fLastFrame) / 1000000.0);
fLastFrame = now;
int entry;
if (fHistEntries < HISTSIZE) {
entry = (fOldestEntry + fHistEntries) % HISTSIZE;
fHistEntries++;
} else {
entry = fOldestEntry;
fOldestEntry = (fOldestEntry + 1) % HISTSIZE;
}
fFpsHistory[entry] = fps;
if (fHistEntries > 5) {
fps = 0;
for (int i = 0; i < fHistEntries; i++)
fps += fFpsHistory[(fOldestEntry + i) % HISTSIZE];
fps /= fHistEntries;
if (fFps) {
glPushAttrib(GL_ENABLE_BIT | GL_LIGHTING_BIT);
glPushMatrix();
glLoadIdentity();
glTranslatef(-0.9, -0.9, 0);
glScalef(0.10, 0.10, 0.10);
glDisable(GL_LIGHTING);
glDisable(GL_DEPTH_TEST);
glDisable(GL_BLEND);
glColor3f(1.0, 1.0, 0);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glMatrixMode(GL_MODELVIEW);
FPS::drawCounter(fps);
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
glPopAttrib();
}
}
} else {
fHistEntries = 0;
fOldestEntry = 0;
}
SwapBuffers();
UnlockGL();
}
void CMassView::MouseDown(BPoint where) // reacts to mouse clicks
{
long whichButtons = 1; // used for tracking which buttons are down
Window()->CurrentMessage()->FindInt32("buttons", &whichButtons); // find out which buttons are down
if (inGLMode && (whichButtons & B_SECONDARY_MOUSE_BUTTON)) // if we are in GL mode, and button 2 is down
{
float frameWidth = Frame().Width(), frameHeight = Frame().Height(); // find the width & height
dragMode = dragBall; // drag the arcball to rotate
HVect vNow; // vector type for passing to ball functions
vNow.x = (2.0 * where.x - frameWidth)/frameWidth; // set the vector
vNow.y = -(2.0 * where.y - frameHeight)/frameHeight; // in both dimensions
Ball_Mouse(&ball, vNow); // and pass it to the Ball functions
Ball_BeginDrag(&ball); // start dragging
while (whichButtons) // loop until drop the mouse
{
snooze(20 * 1000); // snooze for 20 µs
GetMouse(&where, (ulong *)&whichButtons, true); // get the mouse location, &c.
vNow.x = (2.0 * where.x - frameWidth)/frameWidth; // set the vector
vNow.y = -(2.0 * where.y - frameHeight)/frameHeight; // in both dimensions
Ball_Mouse(&ball, vNow); // and pass it to the Ball functions
Draw(Frame()); // redraw the entire frame
} // end of while (whichButtons)
Ball_EndDrag(&ball); // stop dragging
} // end of case where dragging
else if (acceptClicks) // if we have "accept" switched on
{
long row, col; // the board coordinates of the click
if (!inGLMode) // if it's the regular board
{
row = where.y / CELL_SIZE; // calculate which row to look in
col = where.x / CELL_SIZE; // and which column
} // end of normal mode
else
{
GLubyte theColour[4]; // array for retrieving "colour"
LockGL(); // lock in preparation for drawing
GLfloat mNow[16]; // local matrix for ball routines
Ball_Update(&ball); // update the data for the ball
Ball_Value(&ball, mNow); // retrieve the ball's position as a matrix
glDisable(GL_LIGHTING); // disable lighting
glShadeModel(GL_FLAT); // switch to flat shading
glMatrixMode(GL_MODELVIEW); // make sure that we are set to the model matrix
glClearColor(0.0, 0.0, 0.0, 1.0); // and set the "clear" colour to black
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // clear the window to black
glPushMatrix(); // push the GL stack to get a new matrix
glLoadIdentity(); // load the identity matrix
glTranslatef(0, 0, -600.0); // translate the model matrix
glMultMatrixf(mNow); // multiply by this matrix
glCallList(torusPickListID); // and call the display list
glReadPixels(where.x, Frame().Height() - where.y, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, theColour);
// read a single pixel at the mouse location
glPopMatrix(); // pop the matrix back off the stack
glEnable(GL_LIGHTING); // re-enable lighting
glShadeModel(GL_SMOOTH); // and smoothness
UnlockGL(); // unlock GL
Draw(Frame()); // redraw the entire picture
row = theColour[1] - 128; col = theColour[0] - 128; // retrieve the row & column
// (background is black & returns -128)
// printf("%d %d\n", row, col); return;
} // end of GL mode code
if (row < 0) return; // make sure it is a legal cell
else if (row >= theBoard.getHeight()) return; // i.e. not off top or bottom
if (col < 0) return; // same with left & right
else if (col >= theBoard.getWidth()) return;
BMessage *theMessage = new BMessage(CM_MSG_MOVE_CHOSEN); // create a message for it
acceptClicks = false; // turn off "accept clicks"
theMessage->AddInt32("row", row); theMessage->AddInt32("column", col); // add the coordinates to the message
be_app->PostMessage(theMessage); // send the message off
delete theMessage; // get rid of the message when done
} // end of case where we accept clicks
} // end of MouseDown()
