Hello guys,
long time no posts...
I m trying to make my plugins running on Windows and Mac.
Basically it works... except for the UI part.
As for drawing rectangle and so on... i succeded to do it with quickdraw until CS4 and with drawBot with CS5
My problem is for circular handles, that i want to get stretched, rotated according to the Layer scale, rotation, zoom factor...
With windows, I succeed to get my stuff done using GDI+
void
getLayer2FrameMatrix(
PF_FloatMatrix& xform,
const PF_InData *in_data,
const PF_EventExtra *event_extra)
{
event_extra->cbs.get_layer2comp_xform(event_extra->cbs.refcon, event_extra->contextH, in_data->current_time, in_data->time_scale, &xform);
//need to nullify the translation column?
//xform.set(tmp);
//! Transforms the source coordinates in the current context to screen coordinates.
//! Screen (frame) coordinates are affected by the current zoom level.
PF_FixedPoint scale = { INT2FIX(1), INT2FIX(1) };
event_extra->cbs.source_to_frame(event_extra->cbs.refcon, event_extra->contextH, &scale);
float scaleX = static_cast<float>(FIX_2_FLOAT(scale.x));
float scaleY = static_cast<float>(FIX_2_FLOAT(scale.y));
xform.mat[0][0] *= scaleX;
xform.mat[0][1] *= scaleY;
xform.mat[1][0] *= scaleX;
xform.mat[1][1] *= scaleY;
xform.mat[2][0] *= scaleX;
xform.mat[2][1] *= scaleY;
}
PF_FixedPoint center ={cx ,cy};
PF_FloatMatrix xform;
getLayer2FrameMatrix(xform, in_data, event_extraP);
HDC hdc;
PF_GET_CGRAF_DATA((*(event_extraP->contextH))->cgrafptr, PF_CGrafData_HDC, reinterpret_cast<void**>(&hdc));
Gdiplus::Graphics g(hdc);
Gdiplus::Pen pen(Gdiplus::Color(color.alpha, color.red, color.green, color.blue), 1);
pen.SetDashStyle(static_cast<Gdiplus::DashStyle>(style));
Gdiplus::Matrix mat(xform.mat[0][0], xform.mat[0][1], xform.mat[1][0], xform.mat[1][1], xform.mat[2][0], xform.mat[2][1]);
g.SetSmoothingMode(Gdiplus::SmoothingModeAntiAlias);
g.SetTransform(&mat);
g.DrawEllipse(&pen, center.x-cr, center.y-cr, cr+cr, cr+cr);
This is ok for windows and make the deal.
My problem occurs when i do it with Mac...
Of course drawbot with CS5 works perfectly. My problem is for anterior version of after effects.
With quickdraw there is no ways to make like with GDI+ and specify a matrix.
So I have two solution:
1) compute transform matrix, computing all the point of my circle, transform them with a transformation matrix, use the PaintPoly and FillPoly function
2) use Quartz and its context transformation matrix...
I thought that Quartz would work perfectly and simply...
but i was wrong.
The coordinate system is different....
Y is inverted, and the origin is not top left, but bottom left.
I tried to make it work anyways... but it did not...
So i just tried to understand what s happening. I tried to paint a rectangle at the origin of the coordinate system:
void *dp = (*(event_extraP->contextH))->cgrafptr;
CGrafPtr port = reinterpret_cast<CGrafPtr>(dp);
CGContextRef context;
OSStatus err = QDBeginCGContext (port, &context);
if (err== noErr){
CGRect rect = CGRectMake ( 0,0,100,100);
CGAffineTransform userToDevice = CGContextGetUserSpaceToDeviceSpaceTransform (context);
CGAffineTransform deviceToUser = CGAffineTransformInvert ( userToDevice);
CGContextSetRGBFillColor (context, 1, 0, 0, 1);
CGContextFillRect (context,rect)
QDEndCGContext (port, &context);
}
I get a red rectangle... but not on the top or bottom left corner, kind of in the middle of theleft edge of the layer...
Then I tried to go back to more basics and tried
| | | CGAffineTransform userToDevice = CGContextGetUserSpaceToDeviceSpaceTransform (context); |
| | | CGAffineTransform deviceToUser = CGAffineTransformInvert ( userToDevice); |
to transform my rectangle, and i got in the top left corner of the panel containing the layer panel.
That would be helpfull if I could get the top left corner of the layer panel... But I did not find a way to get it
source_to_frame gives only zoom factor
and
layer_to_comp get the transformation into the layer panel...
I m really thinking about going back to the solution 1)...
Does anyone have any idea of how to use properly quartz inside after effects?
Sorry for the vague of my question.
