104 lines
3.7 KiB
C++
104 lines
3.7 KiB
C++
/*************************************************************************/
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/* line_builder.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef LINE_BUILDER_H
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#define LINE_BUILDER_H
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#include "math_2d.h"
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#include "color.h"
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#include "scene/resources/color_ramp.h"
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enum LineJointMode {
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LINE_JOINT_SHARP = 0,
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LINE_JOINT_BEVEL,
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LINE_JOINT_ROUND
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};
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enum LineCapMode {
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LINE_CAP_NONE = 0,
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LINE_CAP_BOX,
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LINE_CAP_ROUND
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};
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enum LineTextureMode {
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LINE_TEXTURE_NONE = 0,
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LINE_TEXTURE_TILE
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// TODO STRETCH mode
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};
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class LineBuilder {
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public:
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// TODO Move in a struct and reference it
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// Input
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Vector<Vector2> points;
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LineJointMode joint_mode;
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LineCapMode begin_cap_mode;
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LineCapMode end_cap_mode;
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float width;
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Color default_color;
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ColorRamp* gradient;
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LineTextureMode texture_mode;
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float sharp_limit;
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int round_precision;
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// TODO offset_joints option (offers alternative implementation of round joints)
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// TODO Move in a struct and reference it
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// Output
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Vector<Vector2> vertices;
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Vector<Color> colors;
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Vector<Vector2> uvs;
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Vector<int> indices;
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LineBuilder();
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void build();
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void clear_output();
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private:
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enum Orientation {
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UP = 0,
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DOWN = 1
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};
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// Triangle-strip methods
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void strip_begin(Vector2 up, Vector2 down, Color color, float uvx);
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void strip_new_quad(Vector2 up, Vector2 down, Color color, float uvx);
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void strip_add_quad(Vector2 up, Vector2 down, Color color, float uvx);
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void strip_add_tri(Vector2 up, Orientation orientation);
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void strip_add_arc(Vector2 center, float angle_delta, Orientation orientation);
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void new_arc(Vector2 center, Vector2 vbegin, float angle_delta, Color color, Rect2 uv_rect);
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private:
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bool _interpolate_color;
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int _last_index[2]; // Index of last up and down vertices of the strip
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};
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#endif // LINE_BUILDER_H
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