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clang warning: src/ccstruct/polyblk.cpp:48:36: warning: constructor parameter 'box' shadows the field 'box' of 'POLY_BLOCK' [-Wshadow-field-in-constructor] Signed-off-by: Stefan Weil <sw@weilnetz.de>
111 lines
3.2 KiB
C++
111 lines
3.2 KiB
C++
/**********************************************************************
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* File: polyblk.h (Formerly poly_block.h)
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* Description: Polygonal blocks
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*
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* (C) Copyright 1993, Hewlett-Packard Ltd.
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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** http://www.apache.org/licenses/LICENSE-2.0
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*
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**********************************************************************/
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#ifndef POLYBLK_H
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#define POLYBLK_H
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#include "publictypes.h"
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#include "elst.h"
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#include "points.h"
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#include "rect.h"
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#include "scrollview.h"
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class DLLSYM POLY_BLOCK {
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public:
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POLY_BLOCK() = default;
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// Initialize from box coordinates.
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POLY_BLOCK(const TBOX& tbox, PolyBlockType type);
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POLY_BLOCK(ICOORDELT_LIST *points, PolyBlockType type);
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~POLY_BLOCK () = default;
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TBOX *bounding_box() { // access function
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return &box;
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}
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ICOORDELT_LIST *points() { // access function
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return &vertices;
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}
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void compute_bb();
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PolyBlockType isA() const {
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return type;
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}
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bool IsText() const {
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return PTIsTextType(type);
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}
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// Rotate about the origin by the given rotation. (Analogous to
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// multiplying by a complex number.
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void rotate(FCOORD rotation);
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// Reflect the coords of the polygon in the y-axis. (Flip the sign of x.)
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void reflect_in_y_axis();
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// Move by adding shift to all coordinates.
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void move(ICOORD shift);
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void plot(ScrollView* window, int32_t num);
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#ifndef GRAPHICS_DISABLED
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void fill(ScrollView* window, ScrollView::Color colour);
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#endif // GRAPHICS_DISABLED
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// Returns true if other is inside this.
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bool contains(POLY_BLOCK *other);
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// Returns true if the polygons of other and this overlap.
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bool overlap(POLY_BLOCK *other);
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// Returns the winding number of this around the test_pt.
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// Positive for anticlockwise, negative for clockwise, and zero for
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// test_pt outside this.
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int16_t winding_number(const ICOORD &test_pt);
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#ifndef GRAPHICS_DISABLED
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// Static utility functions to handle the PolyBlockType.
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// Returns a color to draw the given type.
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static ScrollView::Color ColorForPolyBlockType(PolyBlockType type);
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#endif // GRAPHICS_DISABLED
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private:
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ICOORDELT_LIST vertices; // vertices
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TBOX box; // bounding box
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PolyBlockType type; // Type of this region.
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};
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// Class to iterate the scanlines of a polygon.
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class DLLSYM PB_LINE_IT {
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public:
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PB_LINE_IT(POLY_BLOCK *blkptr) {
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block = blkptr;
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}
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void set_to_block(POLY_BLOCK * blkptr) {
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block = blkptr;
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}
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// Returns a list of runs of pixels for the given y coord.
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// Each element of the returned list is the start (x) and extent(y) of
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// a run inside the region.
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// Delete the returned list after use.
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ICOORDELT_LIST *get_line(int16_t y);
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private:
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POLY_BLOCK * block;
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};
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#endif
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