[gtk/path-work-rebased] curve: Add gsk_curve_print for debugging

[Matthias Clasen <matthiasc src gnome org>]

commit 4aaf9269a249ef548e6dc06d46870b70f01fd22c
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Mar 21 15:55:41 2022 -0400

    curve: Add gsk_curve_print for debugging

 gsk/gskcurve.c        | 47 +++++++++++++++++++++++++++++++++++++++++++++--
 gsk/gskcurveprivate.h |  3 +++
 2 files changed, 48 insertions(+), 2 deletions(-)
---
diff --git a/gsk/gskcurve.c b/gsk/gskcurve.c
index 1a38a6425e..ad14a050ac 100644
--- a/gsk/gskcurve.c
+++ b/gsk/gskcurve.c
@@ -74,6 +74,8 @@ struct _GskCurveClass
                                                          GskCurve               *reverse);
   float                         (* get_curvature)       (const GskCurve         *curve,
                                                          float                   t);
+
+  void                          (* print)               (const GskCurve         *curve);
 };
 
 static void
@@ -334,6 +336,14 @@ gsk_line_curve_get_curvature (const GskCurve *curve,
   return 0;
 }
 
+static void
+gsk_line_curve_print (const GskCurve *curve)
+{
+  g_print ("M %g %g L %g %g",
+           curve->line.points[0].x, curve->line.points[0].y,
+           curve->line.points[1].x, curve->line.points[1].y);
+}
+
 static const GskCurveClass GSK_LINE_CURVE_CLASS = {
   gsk_line_curve_init,
   gsk_line_curve_init_foreach,
@@ -352,7 +362,8 @@ static const GskCurveClass GSK_LINE_CURVE_CLASS = {
   gsk_line_curve_get_bounds,
   gsk_line_curve_offset,
   gsk_line_curve_reverse,
-  gsk_line_curve_get_curvature
+  gsk_line_curve_get_curvature,
+  gsk_line_curve_print,
 };
 
 /** CURVE **/
@@ -870,6 +881,16 @@ gsk_curve_curve_get_curvature (const GskCurve *curve,
   return num / denom;
 }
 
+static void
+gsk_curve_curve_print (const GskCurve *curve)
+{
+  g_print ("M %g %g C %g %g %g %g %g %g",
+           curve->curve.points[0].x, curve->curve.points[0].y,
+           curve->curve.points[1].x, curve->curve.points[1].y,
+           curve->curve.points[2].x, curve->curve.points[2].y,
+           curve->curve.points[3].x, curve->curve.points[3].y);
+}
+
 static const GskCurveClass GSK_CURVE_CURVE_CLASS = {
   gsk_curve_curve_init,
   gsk_curve_curve_init_foreach,
@@ -889,6 +910,7 @@ static const GskCurveClass GSK_CURVE_CURVE_CLASS = {
   gsk_curve_curve_offset,
   gsk_curve_curve_reverse,
   gsk_curve_curve_get_curvature,
+  gsk_curve_curve_print,
 };
 
 /** CONIC **/
@@ -1591,6 +1613,17 @@ gsk_conic_curve_get_curvature (const GskCurve *curve,
   return num / denom;
 }
 
+static void
+gsk_conic_curve_print (const GskCurve *curve)
+{
+  g_print ("M %g %g C %g %g %g %g %g",
+           curve->conic.points[0].x, curve->conic.points[0].y,
+           curve->conic.points[1].x, curve->conic.points[1].y,
+           curve->conic.points[2].x,
+           curve->conic.points[3].x, curve->conic.points[3].y);
+
+}
+
 static const GskCurveClass GSK_CONIC_CURVE_CLASS = {
   gsk_conic_curve_init,
   gsk_conic_curve_init_foreach,
@@ -1609,7 +1642,8 @@ static const GskCurveClass GSK_CONIC_CURVE_CLASS = {
   gsk_conic_curve_get_tight_bounds,
   gsk_conic_curve_offset,
   gsk_conic_curve_reverse,
-  gsk_conic_curve_get_curvature
+  gsk_conic_curve_get_curvature,
+  gsk_conic_curve_print,
 };
 
 /** API **/
@@ -1882,6 +1916,9 @@ gsk_curve_get_curvature_points (const GskCurve *curve,
   float x, y, z;
   int n;
 
+  if (curve->op != GSK_PATH_CURVE)
+    return 0;
+
   align_points (pts, &pts[0], &pts[3], p, 4);
 
   a = p[2].x * p[1].y;
@@ -1946,3 +1983,9 @@ gsk_curve_get_cusps (const GskCurve *curve,
 
   return n;
 }
+
+void
+gsk_curve_print (const GskCurve *curve)
+{
+  get_class (curve->op)->print (curve);
+}
diff --git a/gsk/gskcurveprivate.h b/gsk/gskcurveprivate.h
index cacc5eb06a..18fa8cb2bf 100644
--- a/gsk/gskcurveprivate.h
+++ b/gsk/gskcurveprivate.h
@@ -155,6 +155,9 @@ int                     gsk_curve_get_curvature_points          (const GskCurve
 int                     gsk_curve_get_cusps                     (const GskCurve         *curve,
                                                                  float                   t[2]);
 
+void                    gsk_curve_print                         (const GskCurve         *curve);
+
+
 G_END_DECLS
 
 #endif /* __GSK_CURVE_PRIVATE_H__ */