diff options
| -rw-r--r-- | doc/classes/CanvasItem.xml | 3 | ||||
| -rw-r--r-- | scene/main/canvas_item.cpp | 7 | ||||
| -rw-r--r-- | servers/rendering/renderer_canvas_cull.cpp | 15 |
3 files changed, 16 insertions, 9 deletions
diff --git a/doc/classes/CanvasItem.xml b/doc/classes/CanvasItem.xml index e79bb97a92..5279574d5a 100644 --- a/doc/classes/CanvasItem.xml +++ b/doc/classes/CanvasItem.xml @@ -45,7 +45,8 @@ <param index="6" name="width" type="float" default="1.0" /> <param index="7" name="antialiased" type="bool" default="false" /> <description> - Draws a unfilled arc between the given angles. The larger the value of [param point_count], the smoother the curve. See also [method draw_circle]. + Draws an unfilled arc between the given angles. The larger the value of [param point_count], the smoother the curve. See also [method draw_circle]. + The arc is drawn from [param start_angle] towards the value of [param end_angle] so in clockwise direction if [code]start_angle < end_angle[/code] and counter-clockwise otherwise. Passing the same angles but in reversed order will produce the same arc. If absolute difference of [param start_angle] and [param end_angle] is greater than [constant @GDScript.TAU] radians, then a full circle arc is drawn (i.e. arc will not overlap itself). </description> </method> <method name="draw_char" qualifiers="const"> diff --git a/scene/main/canvas_item.cpp b/scene/main/canvas_item.cpp index 9be1a6431b..a4af7988c6 100644 --- a/scene/main/canvas_item.cpp +++ b/scene/main/canvas_item.cpp @@ -531,10 +531,13 @@ void CanvasItem::draw_polyline_colors(const Vector<Point2> &p_points, const Vect void CanvasItem::draw_arc(const Vector2 &p_center, real_t p_radius, real_t p_start_angle, real_t p_end_angle, int p_point_count, const Color &p_color, real_t p_width, bool p_antialiased) { Vector<Point2> points; points.resize(p_point_count); - const real_t delta_angle = p_end_angle - p_start_angle; + Point2 *points_ptr = points.ptrw(); + + // Clamp angle difference to full circle so arc won't overlap itself. + const real_t delta_angle = CLAMP(p_end_angle - p_start_angle, -Math_TAU, Math_TAU); for (int i = 0; i < p_point_count; i++) { real_t theta = (i / (p_point_count - 1.0f)) * delta_angle + p_start_angle; - points.set(i, p_center + Vector2(Math::cos(theta), Math::sin(theta)) * p_radius); + points_ptr[i] = p_center + Vector2(Math::cos(theta), Math::sin(theta)) * p_radius; } draw_polyline(points, p_color, p_width, p_antialiased); diff --git a/servers/rendering/renderer_canvas_cull.cpp b/servers/rendering/renderer_canvas_cull.cpp index df9dfaa276..4265ee5518 100644 --- a/servers/rendering/renderer_canvas_cull.cpp +++ b/servers/rendering/renderer_canvas_cull.cpp @@ -1207,20 +1207,23 @@ void RendererCanvasCull::canvas_item_add_circle(RID p_item, const Point2 &p_pos, static const int circle_points = 64; points.resize(circle_points); + Vector2 *points_ptr = points.ptrw(); const real_t circle_point_step = Math_TAU / circle_points; for (int i = 0; i < circle_points; i++) { float angle = i * circle_point_step; - points.write[i].x = Math::cos(angle) * p_radius; - points.write[i].y = Math::sin(angle) * p_radius; - points.write[i] += p_pos; + points_ptr[i].x = Math::cos(angle) * p_radius; + points_ptr[i].y = Math::sin(angle) * p_radius; + points_ptr[i] += p_pos; } + indices.resize((circle_points - 2) * 3); + int *indices_ptr = indices.ptrw(); for (int i = 0; i < circle_points - 2; i++) { - indices.write[i * 3 + 0] = 0; - indices.write[i * 3 + 1] = i + 1; - indices.write[i * 3 + 2] = i + 2; + indices_ptr[i * 3 + 0] = 0; + indices_ptr[i * 3 + 1] = i + 1; + indices_ptr[i * 3 + 2] = i + 2; } Vector<Color> color; |