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comparison gtk3/dw.c @ 1263:6b605b0700e8

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Fixed accidentally calling arctan() instead of atan2() on GTK.
author bsmith@81767d24-ef19-dc11-ae90-00e081727c95
date Tue, 25 Oct 2011 11:07:34 +0000
parents 61d0c5f84644
children 83b0ed8c8377
comparison
equal deleted inserted replaced
1262:4b0aa8429592 1263:6b605b0700e8
6958 { 6958 {
6959 GdkColor *foreground = pthread_getspecific(_dw_fg_color_key); 6959 GdkColor *foreground = pthread_getspecific(_dw_fg_color_key);
6960 double dx = xorigin - x1; 6960 double dx = xorigin - x1;
6961 double dy = yorigin - y1; 6961 double dy = yorigin - y1;
6962 double r = sqrt(dx*dx + dy*dy); 6962 double r = sqrt(dx*dx + dy*dy);
6963 double a1 = 180/M_PI * arctan((y1-yorigin)/(x1-xorigin)); 6963 double a1 = 180/M_PI * atan2((y1-yorigin), (x1-xorigin));
6964 double a2 = 180/M_PI * arctan((y2-yorigin)/(x2-xorigin)); 6964 double a2 = 180/M_PI * atan2((y2-yorigin), (x2-xorigin));
6965 6965
6966 gdk_cairo_set_source_color (cr, foreground); 6966 gdk_cairo_set_source_color (cr, foreground);
6967 cairo_set_line_width(cr, 1); 6967 cairo_set_line_width(cr, 1);
6968 cairo_arc(cr, xorigin, yorigin, r, a1, a2); 6968 cairo_arc(cr, xorigin, yorigin, r, a1, a2);
6969 cairo_stroke(cr); 6969 cairo_stroke(cr);