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/**********************************************************************
* File: polyblk.h (Formerly poly_block.h)
* Description: Polygonal blocks
* Author: Sheelagh Lloyd?
* Created:
*
* (C) Copyright 1993, Hewlett-Packard Ltd.
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
** http://www.apache.org/licenses/LICENSE-2.0
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*
**********************************************************************/
#ifndef POLYBLK_H
#define POLYBLK_H
#include "rect.h"
#include "points.h"
#include "scrollview.h"
#include "elst.h"
#include "hpddef.h" //must be last (handpd.dll)
enum POLY_TYPE
{
POLY_TEXT, // Text region
POLY_PAGE, // Page block
POLY_X // Don't care
};
class DLLSYM POLY_BLOCK //poly block
{
public:
POLY_BLOCK() {
} //empty constructor
POLY_BLOCK( //simple constructor
ICOORDELT_LIST *points,
POLY_TYPE t);
~POLY_BLOCK () {
} //destructor
TBOX *bounding_box() { // access function
return &box;
}
ICOORDELT_LIST *points() { // access function
return &vertices;
}
void compute_bb();
POLY_TYPE isA() {
return type;
}
void rotate( //rotate it
FCOORD rotation);
void move( //move it
ICOORD shift); //vector
void plot(ScrollView* window, ScrollView::Color colour, inT32 num);
void fill(ScrollView* window, ScrollView::Color colour);
BOOL8 contains( // is poly inside poly
POLY_BLOCK *poly);
BOOL8 overlap( // do polys overlap
POLY_BLOCK *poly);
inT16 winding_number( // get winding number
const ICOORD &test_pt); // around this point
void prep_serialise() {
vertices.prep_serialise ();
}
void dump(FILE *f) {
vertices.dump (f);
}
void de_dump(FILE *f) {
vertices.de_dump (f);
}
//convert to ascii
make_serialise (POLY_BLOCK) void serialise_asc (
FILE * f);
void de_serialise_asc( //convert from ascii
FILE *f);
private:
ICOORDELT_LIST vertices; // vertices
TBOX box; // bounding box
POLY_TYPE type; // Page block or
// text region
};
class DLLSYM PB_LINE_IT //line iterator
{
public:
PB_LINE_IT( //constructor
POLY_BLOCK *blkptr) {
block = blkptr;
}
NEWDELETE2 (PB_LINE_IT) void set_to_block (POLY_BLOCK * blkptr) {
block = blkptr;
}
ICOORDELT_LIST *get_line(inT16 y);
private:
POLY_BLOCK * block;
};
#endif
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