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Merge pull request #294 from jainanshul/matrix_scalar

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Create a matrix using the provided scalar
This commit is contained in:
Peter Braden 2015-09-11 14:50:48 +02:00
commit 97b896331c
2 changed files with 39 additions and 17 deletions
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55
src/Matrix.cc
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@ -108,27 +108,32 @@ Matrix::Init(Handle<Object> target) {
NAN_METHOD(Matrix::New) {
NanScope();
if (args.This()->InternalFieldCount() == 0)
if (args.This()->InternalFieldCount() == 0) {
NanThrowTypeError("Cannot instantiate without new");
}
Matrix *mat;
Matrix *mat;
if (args.Length() == 0){
mat = new Matrix;
} else if (args.Length() == 2 && args[0]->IsInt32() && args[1]->IsInt32()){
mat = new Matrix(args[0]->IntegerValue(), args[1]->IntegerValue());
} else if (args.Length() == 3 && args[0]->IsInt32() && args[1]->IsInt32() && args[2]->IsInt32()) {
mat = new Matrix(args[0]->IntegerValue(), args[1]->IntegerValue(), args[2]->IntegerValue());
} else { // if (args.Length() == 5) {
Matrix *other = ObjectWrap::Unwrap<Matrix>(args[0]->ToObject());
int x = args[1]->IntegerValue();
int y = args[2]->IntegerValue();
int w = args[3]->IntegerValue();
int h = args[4]->IntegerValue();
mat = new Matrix(other->mat, cv::Rect(x, y, w, h));
}
if (args.Length() == 0) {
mat = new Matrix;
} else if (args.Length() == 2 && args[0]->IsInt32() && args[1]->IsInt32()) {
mat = new Matrix(args[0]->IntegerValue(), args[1]->IntegerValue());
} else if (args.Length() == 3 && args[0]->IsInt32() && args[1]->IsInt32() && args[2]->IsInt32()) {
mat = new Matrix(args[0]->IntegerValue(), args[1]->IntegerValue(), args[2]->IntegerValue());
} else if (args.Length() == 4 && args[0]->IsInt32() && args[1]->IsInt32() &&
args[2]->IsInt32() && args[3]->IsArray()) {
mat = new Matrix(args[0]->IntegerValue(), args[1]->IntegerValue(),
args[2]->IntegerValue(), args[3]->ToObject());
} else { // if (args.Length() == 5) {
Matrix *other = ObjectWrap::Unwrap<Matrix>(args[0]->ToObject());
int x = args[1]->IntegerValue();
int y = args[2]->IntegerValue();
int w = args[3]->IntegerValue();
int h = args[4]->IntegerValue();
mat = new Matrix(other->mat, cv::Rect(x, y, w, h));
}
mat->Wrap(args.Holder());
mat->Wrap(args.Holder());
NanReturnValue(args.Holder());
}
@ -150,6 +155,22 @@ Matrix::Matrix(cv::Mat m, cv::Rect roi): ObjectWrap() {
mat = cv::Mat(m, roi);
}
Matrix::Matrix(int rows, int cols, int type, Local<Object> scalarObj) {
mat = cv::Mat(rows, cols, type);
if (mat.channels() == 3) {
mat.setTo(cv::Scalar(scalarObj->Get(0)->IntegerValue(),
scalarObj->Get(1)->IntegerValue(),
scalarObj->Get(2)->IntegerValue()));
} else if (mat.channels() == 2) {
mat.setTo(cv::Scalar(scalarObj->Get(0)->IntegerValue(),
scalarObj->Get(1)->IntegerValue()));
} else if (mat.channels() == 1) {
mat.setTo(cv::Scalar(scalarObj->Get(0)->IntegerValue()));
} else {
NanThrowError("Only 1-3 channels are supported");
}
}
NAN_METHOD(Matrix::Empty){

1
src/Matrix.h
View File

@ -11,6 +11,7 @@ class Matrix: public node::ObjectWrap {
Matrix(cv::Mat other, cv::Rect roi);
Matrix(int rows, int cols);
Matrix(int rows, int cols, int type);
Matrix(int rows, int cols, int type, Local<Object> scalarObj);
static double DblGet(cv::Mat mat, int i, int j);