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Merge pull request #326 from jainanshul/warpaffine

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Add support for GetRotationMatrix2D and WarpAffine
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Peter Braden 2015-10-29 12:40:44 +01:00
commit ea72d1df38
2 changed files with 46 additions and 0 deletions
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44
src/Matrix.cc
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@ -47,6 +47,8 @@ void Matrix::Init(Local<Object> target) {
Nan::SetPrototypeMethod(ctor, "saveAsync", SaveAsync);
Nan::SetPrototypeMethod(ctor, "resize", Resize);
Nan::SetPrototypeMethod(ctor, "rotate", Rotate);
Nan::SetPrototypeMethod(ctor, "getRotationMatrix2D", GetRotationMatrix2D);
Nan::SetPrototypeMethod(ctor, "warpAffine", WarpAffine);
Nan::SetPrototypeMethod(ctor, "copyTo", CopyTo);
Nan::SetPrototypeMethod(ctor, "pyrDown", PyrDown);
Nan::SetPrototypeMethod(ctor, "pyrUp", PyrUp);
@ -1557,6 +1559,48 @@ NAN_METHOD(Matrix::Rotate) {
return;
}
NAN_METHOD(Matrix::GetRotationMatrix2D) {
Nan::HandleScope scope;
Matrix *self = Nan::ObjectWrap::Unwrap<Matrix>(info.This());
cv::Mat res;
float angle = info[0]->ToNumber()->Value();
int x = info[1]->IsUndefined() ? round(self->mat.size().width / 2) :
info[1]->Uint32Value();
int y = info[2]->IsUndefined() ? round(self->mat.size().height / 2) :
info[2]->Uint32Value();
double scale = info[3]->IsUndefined() ? 1.0 : info[3]->NumberValue();
cv::Point center = cv::Point(x,y);
res = getRotationMatrix2D(center, angle, scale);
~self->mat;
self->mat = res;
return;
}
NAN_METHOD(Matrix::WarpAffine) {
Nan::HandleScope scope;
Matrix *self = Nan::ObjectWrap::Unwrap<Matrix>(info.This());
cv::Mat res;
Matrix *rotMatrix = Nan::ObjectWrap::Unwrap<Matrix>(info[0]->ToObject());
// Resize the image if size is specified
int dstRows = info[1]->IsUndefined() ? self->mat.rows : info[1]->Uint32Value();
int dstCols = info[2]->IsUndefined() ? self->mat.cols : info[2]->Uint32Value();
cv::Size resSize = cv::Size(dstRows, dstCols);
cv::warpAffine(self->mat, res, rotMatrix->mat, resSize);
~self->mat;
self->mat = res;
return;
}
NAN_METHOD(Matrix::PyrDown) {
SETUP_FUNCTION(Matrix)

2
src/Matrix.h
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@ -51,6 +51,8 @@ public:
JSFUNC(Resize)
JSFUNC(Rotate)
JSFUNC(GetRotationMatrix2D)
JSFUNC(WarpAffine)
JSFUNC(PyrDown)
JSFUNC(PyrUp)