scaling position in transform

1 files changed, 7 insertions, 2 deletions

diff --git a/rotord/src/nodes_transform.h b/rotord/src/nodes_transform.h
index 32d9cef..8baf1fa 100644
--- a/rotord/src/nodes_transform.h
+++ b/rotord/src/nodes_transform.h
@@ -64,7 +64,9 @@ namespace Rotor {
 						cv::Mat trans_mat(2,3,CV_32FC1);
 						cv::Mat out_mat(3,3,CV_32FC1);
 
-
+						//normally a scale of 1 will place the image on screen at pixel size
+						//it should be that  a scale of 1 places it at width w
+						//how to scale around the centre
 						cv::Mat inter;
 						if (s<1){
 							if (s<.01) s=.01;
@@ -72,7 +74,10 @@ namespace Rotor {
 							cv::resize(in->rgb,inter,cv::Size(in->w*scalefac,in->h*scalefac),s,s); //double fx=0, double fy=0, int interpolation=INTER_LINEAR )¶
 							s=1.0f;
 						}
-						else inter=in->rgb;
+						else {
+							inter=in->rgb;
+							s=((float)image.w/in->w)*s;
+						}
 						
 						// Compute matrix by creating triangle and transforming
 						//is there a better way - combine the 2? Just a bit of geometry