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Merge pull request #46 from RNELord/master

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Matrix::flip, Matrix::ROI, Matrix::rotate
This commit is contained in:
Peter Braden 2013-05-01 13:07:53 -07:00
commit aa7b3317fe
2 changed files with 78 additions and 0 deletions
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75
src/Matrix.cc
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@ -46,6 +46,7 @@ Matrix::Init(Handle<Object> target) {
NODE_SET_PROTOTYPE_METHOD(constructor, "save", Save);
NODE_SET_PROTOTYPE_METHOD(constructor, "saveAsync", SaveAsync);
NODE_SET_PROTOTYPE_METHOD(constructor, "resize", Resize);
NODE_SET_PROTOTYPE_METHOD(constructor, "rotate", Rotate);
NODE_SET_PROTOTYPE_METHOD(constructor, "pyrDown", PyrDown);
NODE_SET_PROTOTYPE_METHOD(constructor, "pyrUp", PyrUp);
NODE_SET_PROTOTYPE_METHOD(constructor, "channels", Channels);
@ -54,6 +55,8 @@ Matrix::Init(Handle<Object> target) {
NODE_SET_PROTOTYPE_METHOD(constructor, "convertHSVscale", ConvertHSVscale);
NODE_SET_PROTOTYPE_METHOD(constructor, "gaussianBlur", GaussianBlur);
NODE_SET_PROTOTYPE_METHOD(constructor, "copy", Copy);
NODE_SET_PROTOTYPE_METHOD(constructor, "flip", Flip);
NODE_SET_PROTOTYPE_METHOD(constructor, "roi", ROI);
NODE_SET_PROTOTYPE_METHOD(constructor, "ptr", Ptr);
NODE_SET_PROTOTYPE_METHOD(constructor, "addWeighted", AddWeighted);
NODE_SET_PROTOTYPE_METHOD(constructor, "split", Split);
@ -694,6 +697,54 @@ Matrix::Copy(const v8::Arguments& args) {
}
Handle<Value>
Matrix::Flip(const v8::Arguments& args) {
HandleScope scope;
Matrix *self = ObjectWrap::Unwrap<Matrix>(args.This());
if ( args.Length() < 1 || !args[0]->IsInt32() ) {
return v8::ThrowException(Exception::TypeError(String::New(
"Flip requires an integer flipCode argument (0 = X axis, positive = Y axis, negative = both axis)")));
}
int flipCode = args[0]->ToInt32()->Value();
Local<Object> img_to_return = Matrix::constructor->GetFunction()->NewInstance();
Matrix *img = ObjectWrap::Unwrap<Matrix>(img_to_return);
cv::flip(self->mat, img->mat, flipCode);
return scope.Close(img_to_return);
}
Handle<Value>
Matrix::ROI(const v8::Arguments& args) {
HandleScope scope;
Matrix *self = ObjectWrap::Unwrap<Matrix>(args.This());
if ( args.Length() != 4 ) {
return v8::ThrowException(Exception::TypeError(String::New(
"ROI requires x,y,w,h arguments")));
}
// although it's an image to return, it is in fact a pointer to ROI of parent matrix
Local<Object> img_to_return = Matrix::constructor->GetFunction()->NewInstance();
Matrix *img = ObjectWrap::Unwrap<Matrix>(img_to_return);
int x = args[0]->IntegerValue();
int y = args[1]->IntegerValue();
int w = args[2]->IntegerValue();
int h = args[3]->IntegerValue();
cv::Mat roi(self->mat, cv::Rect(x,y,w,h));
img->mat = roi;
return scope.Close(img_to_return);
}
Handle<Value>
Matrix::Ptr(const v8::Arguments& args) {
HandleScope scope;
@ -925,6 +976,30 @@ Matrix::Resize(const v8::Arguments& args){
return scope.Close(Undefined());
}
Handle<Value>
Matrix::Rotate(const v8::Arguments& args){
HandleScope scope;
Matrix *self = ObjectWrap::Unwrap<Matrix>(args.This());
cv::Mat rotMatrix(2, 3, CV_32FC1);
cv::Mat res;
float angle = args[0]->ToNumber()->Value();
int x = args[1]->IsUndefined() ? round(self->mat.size().width / 2) : args[1]->Uint32Value();
int y = args[1]->IsUndefined() ? round(self->mat.size().height / 2) : args[2]->Uint32Value();
cv::Point center = cv::Point(x,y);
rotMatrix = getRotationMatrix2D(center, angle, 1.0);
cv::warpAffine(self->mat, res, rotMatrix, self->mat.size());
~self->mat;
self->mat = res;
return scope.Close(Undefined());
}
Handle<Value>
Matrix::PyrDown(const v8::Arguments& args){
SETUP_FUNCTION(Matrix)

3
src/Matrix.h
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@ -42,6 +42,7 @@ class Matrix: public node::ObjectWrap {
JSFUNC(ToBufferAsync)
JSFUNC(Resize)
JSFUNC(Rotate)
JSFUNC(PyrDown)
JSFUNC(PyrUp)
@ -49,6 +50,8 @@ class Matrix: public node::ObjectWrap {
JSFUNC(ConvertHSVscale)
JSFUNC(GaussianBlur)
JSFUNC(Copy)
JSFUNC(Flip)
JSFUNC(ROI)
JSFUNC(Ptr)
JSFUNC(AddWeighted)
JSFUNC(Split)