The method draws continuous line between an ordered array of
points (poly-line).
Signed-off-by: Yordan Karadzhov (VMware) <y.karadz@xxxxxxxxx>
---
src/libkshark-plot.c | 32 ++++++++++++++++++++++++++------
src/libkshark-plot.h | 5 +++++
2 files changed, 31 insertions(+), 6 deletions(-)
diff --git a/src/libkshark-plot.c b/src/libkshark-plot.c
index f2c5be30..dc49fbd9 100644
--- a/src/libkshark-plot.c
+++ b/src/libkshark-plot.c
@@ -150,6 +150,30 @@ void ksplot_draw_line(const struct ksplot_point *a,
glEnd();
}
+/**
+ * @brief Draw the a polyline.
+ *
+ * @param points: Input location for the array of points defining the polyline.
+ * @param n_points: The size of the array of points.
+ * @param col: The color of the polyline.
+ * @param size: The size of the polyline.
+ */
+void ksplot_draw_polyline(const struct ksplot_point *points,
+ size_t n_points,
+ const struct ksplot_color *col,
+ float size)
+{
+ if (!points || !n_points || !col || size < .5f)
+ return;
+
+ /* Loop over the points of the polygon and draw connecting lines. */
+ for(size_t i = 1; i < n_points; ++i)
+ ksplot_draw_line(&points[i - 1],
+ &points[i],
+ col,
+ size);
+}
+
/**
* @brief Draw a polygon.
*
@@ -211,12 +235,8 @@ void ksplot_draw_polygon_contour(const struct ksplot_point *points,
if (!points || !n_points || !col || size < .5f)
return;
- /* Loop over the points of the polygon and draw connecting lines. */
- for(size_t i = 1; i < n_points; ++i)
- ksplot_draw_line(&points[i - 1],
- &points[i],
- col,
- size);
+ /* Loop over the points of the polygon and draw a polyline. */
+ ksplot_draw_polyline(points, n_points, col, size);
/* Close the contour. */
ksplot_draw_line(&points[0],
diff --git a/src/libkshark-plot.h b/src/libkshark-plot.h
index 063740d9..d881b20a 100644
--- a/src/libkshark-plot.h
+++ b/src/libkshark-plot.h
@@ -72,6 +72,11 @@ void ksplot_draw_line(const struct ksplot_point *a,
const struct ksplot_color *col,
float size);
+void ksplot_draw_polyline(const struct ksplot_point *points,
+ size_t n_points,
+ const struct ksplot_color *col,
+ float size);
+
void ksplot_draw_polygon(const struct ksplot_point *points,
size_t n_points,
const struct ksplot_color *col,
--
2.25.1
|