77 lines
1.6 KiB
C++
77 lines
1.6 KiB
C++
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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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