static OfxStatus interactPenDown(OfxImageEffectHandle effect, OfxInteractHandle interactInstance, OfxPropertySetHandle inArgs)
{
// get my data handle
MyInteractData *data = getInteractData(interactInstance);
double penPos[2];
gPropHost->propGetDoubleN(inArgs, kOfxInteractPropPenPosition, 2, penPos);
Instance *instance = (Instance*)ofxuGetEffectInstanceData(effect);
// Get the image size
const std::pair<int, int> &size = instance->Mask.getSize ();
data->DownX = (int)penPos[0];
data->DownY = size.second-(int)penPos[1]-1;
data->Down = true;
return kOfxStatOK;
}
// draw an interact instance
static OfxStatus interactDraw(OfxImageEffectHandle effect, OfxInteractHandle interactInstance, OfxPropertySetHandle drawArgs)
{
// get my private interact data
MyInteractData *data = getInteractData(interactInstance);
Instance *instance = (Instance*)ofxuGetEffectInstanceData(effect);
if (data->Down)
{
double penPos[2];
gPropHost->propGetDoubleN(drawArgs, kOfxInteractPropPenPosition, 2, penPos);
// Get the image size
const std::pair<int, int> &size = instance->Mask.getSize ();
const float x0 = (float)data->DownX;
const float y0 = size.second-(float)data->DownY-1;
const float x1 = (float)penPos[0];
const float y1 = (float)penPos[1];
glPushAttrib (GL_ENABLE_BIT|GL_CURRENT_BIT);
// if the we have selected the Xhair, draw it highlit
glColor3f(1, 1, 1);
glEnable(GL_COLOR_LOGIC_OP);
glLogicOp(GL_XOR);
glLineStipple(1, 0xF0F0);
glEnable(GL_LINE_STIPPLE);
glBegin(GL_LINE_STRIP);
glVertex2f(x0, y0);
glVertex2f(x1, y0);
glVertex2f(x1, y1);
glVertex2f(x0, y1);
glVertex2f(x0, y0);
glEnd();
glPopAttrib ();
}
return kOfxStatOK;
}
// Convinience wrapper to get private data
static MyInstanceData *
getMyInstanceData(OfxImageEffectHandle effect)
{
MyInstanceData *myData = (MyInstanceData *) ofxuGetEffectInstanceData(effect);
return myData;
}
static OfxStatus interactPenUp(OfxImageEffectHandle effect, OfxInteractHandle interactInstance, OfxPropertySetHandle inArgs)
{
// get my data handle
MyInteractData *data = getInteractData(interactInstance);
Instance *instance = (Instance*)ofxuGetEffectInstanceData(effect);
double penPos[2];
gPropHost->propGetDoubleN(inArgs, kOfxInteractPropPenPosition, 2, penPos);
if (data->Down)
{
// Get the image size
const std::pair<int, int> &size = instance->Mask.getSize ();
const int upX = (int)penPos[0];
const int upY = size.second-(int)penPos[1]-1;
std::set<std::string> names;
openexrid::Sample sample;
const int alpha = instance->Mask.findSlice ("A");
const int maxX = std::min (std::max (upX, data->DownX)+1, size.first);
const int maxY = std::min (std::max (upY, data->DownY)+1, size.second);
for (int y = std::max (std::min (upY, data->DownY), 0); y < maxY; ++y)
for (int x = std::max (std::min (upX, data->DownX), 0); x < maxX; ++x)
{
// Get the max coverage sample in the pixel
float maxCoverage = 0;
uint32_t maxId = ~0U;
const int sampleN = instance->Mask.getSampleN (x, y);
for (int s = 0; s < sampleN; ++s)
{
openexrid::Sample sample;
instance->Mask.getSample (x, y, s, sample);
if (alpha == -1 || sample.Values[alpha] > maxCoverage)
{
maxId = sample.Id;
if (alpha != -1)
maxCoverage = sample.Values[alpha];
}
}
// Found something ?
if (maxId != ~0U)
{
const char *name = instance->Mask.getName (maxId);
names.insert (escapeRegExp (name));
}
}
// Get the old pattern
const char *_oldPattern;
gParamHost->paramGetValue (data->patternParam, &_oldPattern);
std::string oldPattern = _oldPattern;
/* Nuke escapes the \ of the text parameter */
std::set<std::string> oldNames (split (oldPattern.c_str (), "\n\r"));
// Shift ?
if (data->Shift)
{
// Reverse the selection for the previously selected names
for (const auto &name : oldNames)
{
// Try insert
auto r = names.insert (name);
// Already there, remove it
if (!r.second)
names.erase (r.first);
}
}
// get the point param's value
std::string pattern = join (names, "\n");
gParamHost->paramSetValue(data->patternParam, pattern.c_str ());
data->Down = false;
}
return kOfxStatOK;
}
