1/**************************************************************************/
2/* line_builder.h */
3/**************************************************************************/
4/* This file is part of: */
5/* GODOT ENGINE */
6/* https://godotengine.org */
7/**************************************************************************/
8/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
9/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
10/* */
11/* Permission is hereby granted, free of charge, to any person obtaining */
12/* a copy of this software and associated documentation files (the */
13/* "Software"), to deal in the Software without restriction, including */
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15/* distribute, sublicense, and/or sell copies of the Software, and to */
16/* permit persons to whom the Software is furnished to do so, subject to */
17/* the following conditions: */
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19/* The above copyright notice and this permission notice shall be */
20/* included in all copies or substantial portions of the Software. */
21/* */
22/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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28/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
29/**************************************************************************/
30
31#ifndef LINE_BUILDER_H
32#define LINE_BUILDER_H
33
34#include "line_2d.h"
35
36class LineBuilder {
37public:
38 // TODO Move in a struct and reference it
39 // Input
40 Vector<Vector2> points;
41 Line2D::LineJointMode joint_mode = Line2D::LINE_JOINT_SHARP;
42 Line2D::LineCapMode begin_cap_mode = Line2D::LINE_CAP_NONE;
43 Line2D::LineCapMode end_cap_mode = Line2D::LINE_CAP_NONE;
44 bool closed = false;
45 float width = 10.0;
46 Curve *curve = nullptr;
47 Color default_color = Color(0.4, 0.5, 1);
48 Gradient *gradient = nullptr;
49 Line2D::LineTextureMode texture_mode = Line2D::LineTextureMode::LINE_TEXTURE_NONE;
50 float sharp_limit = 2.f;
51 int round_precision = 8;
52 float tile_aspect = 1.f; // w/h
53 // TODO offset_joints option (offers alternative implementation of round joints)
54
55 // TODO Move in a struct and reference it
56 // Output
57 Vector<Vector2> vertices;
58 Vector<Color> colors;
59 Vector<Vector2> uvs;
60 Vector<int> indices;
61
62 LineBuilder();
63
64 void build();
65
66private:
67 enum Orientation {
68 UP = 0,
69 DOWN = 1
70 };
71
72 // Triangle-strip methods
73 void strip_begin(Vector2 up, Vector2 down, Color color, float uvx);
74 void strip_new_quad(Vector2 up, Vector2 down, Color color, float uvx);
75 void strip_add_quad(Vector2 up, Vector2 down, Color color, float uvx);
76 void strip_add_tri(Vector2 up, Orientation orientation);
77 void strip_add_arc(Vector2 center, float angle_delta, Orientation orientation);
78
79 void new_arc(Vector2 center, Vector2 vbegin, float angle_delta, Color color, Rect2 uv_rect);
80
81private:
82 bool _interpolate_color = false;
83 int _last_index[2] = {}; // Index of last up and down vertices of the strip
84};
85
86#endif // LINE_BUILDER_H
87