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Merge pull request #455 from BBB/drawContour-args

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Add support for lineType and offset for drawContours
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Dan Schultzer 2016-10-25 13:19:15 -07:00 committed by GitHub
commit ffc3625c26
2 changed files with 14 additions and 2 deletions
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5
examples/contours.js
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@ -25,13 +25,16 @@ cv.readImage('./files/stuff.png', function(err, im) {
im_canny.dilate(nIters); im_canny.dilate(nIters);
contours = im_canny.findContours(); contours = im_canny.findContours();
const lineType = 8;
const maxLevel = 0;
const thickness = 1;
for(i = 0; i < contours.size(); i++) { for(i = 0; i < contours.size(); i++) {
if(contours.area(i) > maxArea) { if(contours.area(i) > maxArea) {
var moments = contours.moments(i); var moments = contours.moments(i);
var cgx = Math.round(moments.m10 / moments.m00); var cgx = Math.round(moments.m10 / moments.m00);
var cgy = Math.round(moments.m01 / moments.m00); var cgy = Math.round(moments.m01 / moments.m00);
big.drawContour(contours, i, GREEN); big.drawContour(contours, i, GREEN, thickness, lineType, maxLevel, [0, 0]);
big.line([cgx - 5, cgy], [cgx + 5, cgy], RED); big.line([cgx - 5, cgy], [cgx + 5, cgy], RED);
big.line([cgx, cgy - 5], [cgx, cgy + 5], RED); big.line([cgx, cgy - 5], [cgx, cgy + 5], RED);
} }

11
src/Matrix.cc
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@ -1486,7 +1486,16 @@ NAN_METHOD(Matrix::DrawContour) {
} }
int thickness = info.Length() < 4 ? 1 : info[3]->NumberValue(); int thickness = info.Length() < 4 ? 1 : info[3]->NumberValue();
cv::drawContours(self->mat, cont->contours, pos, color, thickness); int lineType = info.Length() < 5 ? 8 : info[4]->NumberValue();
int maxLevel = info.Length() < 6 ? 0 : info[5]->NumberValue();
cv::Point offset;
if (info.Length() == 6) {
Local<Array> _offset = Local<Array>::Cast(info[5]);
offset = cv::Point(_offset->Get(0)->ToNumber()->Value(), _offset->Get(1)->ToNumber()->Value());
}
cv::drawContours(self->mat, cont->contours, pos, color, thickness, lineType, cont->hierarchy, maxLevel, offset);
return; return;
} }