bool GiGraphics::setClipWorld(const Box2d& rectWorld)
{
bool ret = false;
if (isDrawing() && !rectWorld.isEmpty())
{
Box2d box (rectWorld * xf().worldToDisplay());
box.intersectWith(Box2d(m_impl->clipBox0));
if (!box.isEmpty(Tol(1, 0)))
{
if (box != Box2d(m_impl->clipBox))
{
box.get(m_impl->clipBox);
m_impl->rectDraw = box;
m_impl->rectDraw.inflate(GiGraphicsImpl::CLIP_INFLATE);
m_impl->rectDrawM = m_impl->rectDraw * xf().displayToModel();
m_impl->rectDrawW = m_impl->rectDrawM * xf().modelToWorld();
SafeCall(m_impl->canvas, _clipBoxChanged(m_impl->clipBox));
}
ret = true;
}
}
return ret;
}
float GLMoblet::getActualFramesPerSecond() const {
if(!isDrawing())
return 0.0f;
else {
int millisSinceStartDrawing = maGetMilliSecondCount() - mMillisOfStartDrawing;
if(millisSinceStartDrawing == 0) return 0;
return mFramesSinceStartDrawing / (0.001f * (float)millisSinceStartDrawing);
}
}
bool GdiPrintContext::swapBuffer()
{
//if (!isActivated() || isDrawing()) return false;
if (isDrawing()) return false;
if (NULL == memBmp_ || NULL == memDC_ || NULL == printDC_) return false;
setDrawing(true);
// copy off-screen buffer to window's DC
#if 1
// method #1: [use DDB & DIB] the image is not scaled to fit the rectangle
const bool ret = TRUE == BitBlt(
printDC_,
drawRegion_.left, drawRegion_.bottom, drawRegion_.getWidth(), drawRegion_.getHeight(),
memDC_,
0, 0, //drawRegion_.left, drawRegion_.bottom,
SRCCOPY
);
#elif 0
// method #2: [use DDB & DIB] the image is scaled to fit the rectangle
// caution:
// all negative coordinate values are ignored.
// instead, these values are regarded as absolute(positive) values.
const bool ret = TRUE == StretchBlt(
printDC_,
drawRegion_.left, drawRegion_.bottom, drawRegion_.getWidth(), drawRegion_.getHeight(),
memDC_,
//(int)std::floor(viewingRegion_.left + 0.5), (int)std::floor(viewingRegion_.bottom + 0.5), (int)std::floor(viewingRegion_.getWidth() + 0.5), (int)std::floor(viewingRegion_.getHeight() + 0.5),
0, 0, (int)std::floor(viewingRegion_.getWidth() + 0.5), (int)std::floor(viewingRegion_.getHeight() + 0.5),
SRCCOPY
);
#else
// method #3: [use DIB] the image is scaled to fit the rectangle
// caution:
// all negative coordinate values are ignored.
// instead, these values are regarded as absolute(positive) values.
const bool ret = TRUE == StretchDIBits(
printDC_,
drawRegion_.left, drawRegion_.bottom, drawRegion_.getWidth(), drawRegion_.getHeight(),
//(int)std::floor(viewingRegion_.left + 0.5), (int)std::floor(viewingRegion_.bottom + 0.5), (int)std::floor(viewingRegion_.getWidth() + 0.5), (int)std::floor(viewingRegion_.getHeight() + 0.5),
0, 0, (int)std::floor(viewingRegion_.getWidth() + 0.5), (int)std::floor(viewingRegion_.getHeight() + 0.5),
dibBits_,
&bmiDIB,
!isPaletteUsed_ ? DIB_RGB_COLORS : DIB_PAL_COLORS,
SRCCOPY
);
#endif
setDrawing(false);
return ret;
}
bool WglBitmapBufferedContext::swapBuffer()
{
//if (!isActivated() || isDrawing()) return false;
if (isDrawing()) return false;
if (NULL == memBmp_ || NULL == memDC_ || NULL == hDC_) return false;
setDrawing(true);
// copy off-screen buffer to window's DC
const bool ret = TRUE == BitBlt(
hDC_,
drawRegion_.left, drawRegion_.bottom,
drawRegion_.getWidth(), drawRegion_.getHeight(),
memDC_,
0, 0, //drawRegion_.left, drawRegion_.bottom,
SRCCOPY
);
setDrawing(false);
return ret;
}
bool GiGraphics::setClipBox(const RECT_2D& rc)
{
if (!isDrawing() || isStopping())
return false;
bool ret = false;
Box2d rect;
if (!rect.intersectWith(Box2d(rc), Box2d(m_impl->clipBox0)).isEmpty()) {
if (rect != Box2d(m_impl->clipBox)) {
rect.get(m_impl->clipBox);
m_impl->rectDraw.set(Box2d(rc));
m_impl->rectDraw.inflate(GiGraphicsImpl::CLIP_INFLATE);
m_impl->rectDrawM = m_impl->rectDraw * xf().displayToModel();
m_impl->rectDrawW = m_impl->rectDrawM * xf().modelToWorld();
SafeCall(m_impl->canvas, clipRect(m_impl->clipBox.left, m_impl->clipBox.top,
m_impl->clipBox.width(),
m_impl->clipBox.height()));
}
ret = true;
}
return ret;
}
