// function reacting to pen motion
static OfxStatus
interactPenMotion(OfxImageEffectHandle pluginInstance,
OfxInteractHandle interactInstance,
OfxPropertySetHandle inArgs)
{
// get my data handle
MyInteractData *data = getInteractData(interactInstance);
// Have we grabbed on a pen down already?
if(data->selected) {
// get the project size as we are normalising to this
OfxPointD projSize, projOffset;
ofxuGetProjectSetup(pluginInstance, projSize, projOffset);
// get the pen position and normalise that
OfxPointD penPos;
gPropHost->propGetDoubleN(inArgs, kOfxInteractPropPenPosition, 2, &penPos.x);
penPos.x = (penPos.x - projOffset.x)/projSize.x;
penPos.y = (penPos.y - projOffset.y)/projSize.y;
// set the value of the 'point' param
gParamHost->paramSetValue(data->pointParam, penPos.x, penPos.y);
return kOfxStatOK;
}
return kOfxStatReplyDefault;
}
static OfxStatus
interactPenDown(OfxImageEffectHandle pluginInstance,
OfxInteractHandle interactInstance,
OfxPropertySetHandle inArgs)
{
// get my data handle
MyInteractData *data = getInteractData(interactInstance);
// get the point param's value
double x, y;
gParamHost->paramGetValue(data->pointParam, &x, &y);
// get the size of a pixel on screen
double pixelScale[2];
ofxuGetInteractPixelScale(inArgs, pixelScale);
// see if the pen is within 5 screen pixels of the point, in which case, select it
double penPos[2];
gPropHost->propGetDoubleN(inArgs, kOfxInteractPropPenPosition, 2, penPos);
if(fabs(x - penPos[0]) < 5 * pixelScale[0] && fabs(y - penPos[1]) < 5 * pixelScale[1]) {
data->selected = true;
return kOfxStatOK;
}
return kOfxStatReplyDefault;
}
static OfxStatus
interactPenDown(OfxImageEffectHandle pluginInstance,
OfxInteractHandle interactInstance,
OfxPropertySetHandle inArgs)
{
// get my data handle
MyInteractData *data = getInteractData(interactInstance);
// get the project size as we are normalising to this
OfxPointD projSize, projOffset;
ofxuGetProjectSetup(pluginInstance, projSize, projOffset);
// get the point param's value
double x, y;
gParamHost->paramGetValue(data->pointParam, &x, &y);
// scale it up to the project size as it is a normalised spatial parameter
x = projOffset.x + x * projSize.x;
y = projOffset.y + y * projSize.y;
// get the size of a pixel on screen
double pixelScale[2];
ofxuGetInteractPixelScale(inArgs, pixelScale);
// see if the pen is within 5 screen pixels of the point, in which case, select it
double penPos[2];
gPropHost->propGetDoubleN(inArgs, kOfxInteractPropPenPosition, 2, penPos);
if(fabs(x - penPos[0]) < 5 * pixelScale[0] && fabs(y - penPos[1]) < 5 * pixelScale[1]) {
data->selected = true;
return kOfxStatOK;
}
return kOfxStatReplyDefault;
}
// destruction of an interact instance
static OfxStatus
interactDestroyInstance(OfxImageEffectHandle /*pluginInstance*/,
OfxInteractHandle interactInstance)
{
MyInteractData *data = getInteractData(interactInstance);
delete data;
return kOfxStatOK;
}
// draw an interact instance
static OfxStatus
interactDraw(OfxImageEffectHandle pluginInstance,
OfxInteractHandle interactInstance,
OfxPropertySetHandle drawArgs)
{
OfxStatus err;
// get my private interact data
MyInteractData *data = getInteractData(interactInstance);
// get the project size
OfxPointD projSize, projOffset;
ofxuGetProjectSetup(pluginInstance, projSize, projOffset);
// get the size of a pixel in the current projection
double pixelScale[2];
ofxuGetInteractPixelScale(drawArgs, pixelScale);
// get my param's value
double x, y;
if((err = getCustomParam(pluginInstance, x, y)) != kOfxStatOK)
return err;
// scale it up to the project size as it is normalised
x = projOffset.x + x * projSize.x;
y = projOffset.y + y * projSize.y;
// make the xhair a constant size on screen by scaling by the pixel scale
float dx = kXHairSize * pixelScale[0];
float dy = kXHairSize * pixelScale[1];
// if the we have selected the Xhair, draw it highlit
if(data->selected)
glColor3f(1, 1, 1);
else
glColor3f(1, 0, 0);
// Draw a cross hair, the current coordinate system aligns with the image plane.
glPushMatrix();
glTranslated(x, y, 0);
glBegin(GL_LINES);
glVertex2f(-dx, 0);
glVertex2f(dx, 0);
glVertex2f(0, -dy);
glVertex2f(0, dy);
glEnd();
glPopMatrix();
return kOfxStatOK;
}
static OfxStatus interactKeyUp (OfxImageEffectHandle effect, OfxInteractHandle interactInstance, OfxPropertySetHandle inArgs)
{
MyInteractData *data = getInteractData(interactInstance);
int key;
gPropHost->propGetInt (inArgs, kOfxPropKeySym, 0, &key);
if (key == kOfxKey_Shift_L || key == kOfxKey_Shift_R)
data->Shift = false;
return kOfxStatOK;
}
static OfxStatus
interactPenUp(OfxImageEffectHandle /*pluginInstance*/,
OfxInteractHandle interactInstance,
OfxPropertySetHandle /*inArgs*/)
{
// get my data handle
MyInteractData *data = getInteractData(interactInstance);
if(data->selected) {
// pen's gone up, deselect
data->selected = false;
return kOfxStatOK;
}
return kOfxStatReplyDefault;
}
// draw an interact instance
static OfxStatus
interactDraw(OfxImageEffectHandle pluginInstance,
OfxInteractHandle interactInstance,
OfxPropertySetHandle drawArgs)
{
// get my private interact data
MyInteractData *data = getInteractData(interactInstance);
// get the size of a pixel in the current projection
double pixelScale[2];
ofxuGetInteractPixelScale(drawArgs, pixelScale);
// get my param's value
double x, y;
gParamHost->paramGetValue(data->pointParam, &x, &y);
// make the xhair a constant size on screen by scaling by the pixel scale
float dx = kXHairSize * pixelScale[0];
float dy = kXHairSize * pixelScale[1];
// if the we have selected the Xhair, draw it highlit
if(data->selected)
glColor3f(1, 1, 1);
else
glColor3f(1, 0, 0);
// Draw a cross hair, the current coordinate system aligns with the image plane.
glPushMatrix();
glTranslated(x, y, 0);
glBegin(GL_LINES);
glVertex2f(-dx, 0);
glVertex2f(dx, 0);
glVertex2f(0, -dy);
glVertex2f(0, dy);
glEnd();
glPopMatrix();
return kOfxStatOK;
}
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;
}
// function reacting to pen motion
static OfxStatus
interactPenMotion(OfxImageEffectHandle pluginInstance,
OfxInteractHandle interactInstance,
OfxPropertySetHandle inArgs)
{
// get my data handle
MyInteractData *data = getInteractData(interactInstance);
// Have we grabbed on a pen down already?
if(data->selected) {
// get the pen position
OfxPointD penPos;
gPropHost->propGetDoubleN(inArgs, kOfxInteractPropPenPosition, 2, &penPos.x);
// set the value of the 'point' param
gParamHost->paramSetValue(data->pointParam, penPos.x, penPos.y);
return kOfxStatOK;
}
return kOfxStatReplyDefault;
}
// 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;
}
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;
}