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120 lines
1.9 KiB
C
120 lines
1.9 KiB
C
/*
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* c2_geometry_poly.h
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*
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* Copyright (C) 2023 Michel Pollet <buserror@gmail.com>
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*
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* SPDX-License-Identifier: MIT
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*/
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#ifndef C2_GEOMETRY_POLY_H_
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#define C2_GEOMETRY_POLY_H_
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#include "c2_arrays.h"
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typedef struct c2_polyline_t {
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c2_pt_array_t pt;
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c2_rect_t bounds;
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} c2_polyline_t, *c2_polyline_p;
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DECLARE_C_ARRAY(c2_polyline_p, c2_polyline_array, 16,
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c2_polyline_p current; );
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DECLARE_C_ARRAY(c2_coord_array_t, c2_scanline_array, 16,
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c2_coord_t height; );
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IMPLEMENT_C_ARRAY(c2_scanline_array);
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IMPLEMENT_C_ARRAY(c2_polyline_array);
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void
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c2_polyline_clear(
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c2_polyline_p pl);
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int
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c2_polyline_get_segment(
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c2_polyline_p pl,
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long ind,
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c2_segment_p o );
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void
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c2_polyline_offset(
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c2_polyline_p pl,
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c2_coord_t inX,
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c2_coord_t inY );
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void
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c2_polyline_scale(
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c2_polyline_p pl,
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double inFactor,
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c2_rect_p inSkip /* = NULL */ );
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void
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c2_polyline_add_pt(
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c2_polyline_p pl,
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c2_pt_p p );
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int
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c2_polyline_array_clip(
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c2_polyline_array_p pa,
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c2_rect_p clip,
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c2_polyline_array_p outPoly );
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void
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c2_polyline_array_break(
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c2_polyline_array_p pa);
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void
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c2_polyline_array_add_pt(
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c2_polyline_array_p pa,
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c2_pt_p p );
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void
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c2_polyline_array_scale(
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c2_polyline_array_p pa,
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float inFactor,
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c2_rect_p inSkip /* = NULL */ );
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void
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c2_polyline_array_offset(
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c2_polyline_array_p pa,
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c2_coord_t inX,
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c2_coord_t inY );
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void
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c2_scanline_array_proper_alloc(
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c2_scanline_array_p a,
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c2_coord_t height);
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void
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c2_scanline_array_proper_clear(
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c2_scanline_array_p a);
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void
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c2_scanline_array_add_coord(
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c2_scanline_array_p a,
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int inY,
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c2_coord_t inX );
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typedef c2_polyline_p c2_polygon_p;
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int
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c2_polygon_isempty(
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c2_polygon_p pl);
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c2_coord_t
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c2_polygon_get_heigth(
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c2_polygon_p pl);
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void
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c2_polygon_clip(
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c2_polygon_p pl,
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c2_rect_p clip,
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c2_polygon_p outPoly );
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void
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c2_polygon_scanline(
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c2_polygon_p pl,
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c2_scanline_array_p ioList,
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c2_coord_t ymin );
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#endif /* C2_GEOMETRY_POLY_H_ */
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