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Polygon points vector STL-ified.

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ADAM David Alan Martin
2025-08-10 14:39:36 -04:00
parent c63f58cfe1
commit 6c3bf19bbd
2 changed files with 16 additions and 23 deletions
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36
dw/types.cc
View File

@ -123,29 +123,23 @@ bool Circle::isPointWithin (int x, int y)
Polygon::Polygon ()
{
points = new misc::SimpleVector<Point> (8);
minx = miny = 0xffffff;
maxx = maxy = -0xffffff;
}
Polygon::~Polygon ()
{
delete points;
}
/*
* Draw polygon in view relative to point (x,y).
*/
void Polygon::draw (core::View *view, core::style::Style *style, int x, int y)
{
if (points->size()) {
if (points.size()) {
int i;
const bool filled = false, convex = false;
std::vector< Point > pointArray( points->size() );
std::vector< Point > pointArray( points.size() );
for (i = 0; i < points->size(); i++) {
pointArray[i].x = x + points->getRef(i)->x;
pointArray[i].y = y + points->getRef(i)->y;
for (i = 0; i < points.size(); i++) {
pointArray[i].x = x + points.at(i).x;
pointArray[i].y = y + points.at(i).y;
}
view->drawPolygon(style->color, core::style::Color::SHADING_NORMAL,
filled, convex, pointArray.data(), i);
@ -154,9 +148,9 @@ void Polygon::draw (core::View *view, core::style::Style *style, int x, int y)
void Polygon::addPoint (int x, int y)
{
points->increase ();
points->getRef(points->size () - 1)->x = x;
points->getRef(points->size () - 1)->y = y;
points.emplace_back ();
points.back().x = x;
points.back().y = y;
minx = misc::min(minx, x);
miny = misc::min(miny, y);
@ -198,21 +192,21 @@ bool Polygon::linesCross(int ax1, int ay1, int ax2, int ay2,
bool Polygon::isPointWithin (int x, int y)
{
if (points->size () < 3 ||
if (points.size () < 3 ||
(x < minx || x > maxx || y < miny || y >= maxy))
return false;
else {
int numCrosses = 0;
for (int i = 0; i < points->size () - 1; i++) {
for (int i = 0; i < points.size () - 1; i++) {
if (linesCross (minx - 1, miny - 1, x, y,
points->getRef(i)->x, points->getRef(i)->y,
points->getRef(i + 1)->x, points->getRef(i + 1)->y))
points.at(i).x, points.at(i).y,
points.at(i + 1).x, points.at(i + 1).y))
numCrosses++;
}
if (linesCross (minx - 1, miny - 1, x, y,
points->getRef(points->size () - 1)->x,
points->getRef(points->size () - 1)->y,
points->getRef(0)->x, points->getRef(0)->y))
points.back().x,
points.back().y,
points.at(0).x, points.at(0).y))
numCrosses++;
return numCrosses % 2 == 1;

3
dw/types.hh
View File

@ -107,7 +107,7 @@ public:
class Polygon: public Shape
{
private:
lout::misc::SimpleVector<Point> *points;
std::vector< Point > points;
int minx, miny, maxx, maxy;
/**
@ -126,7 +126,6 @@ private:
public:
Polygon ();
~Polygon ();
void draw (core::View *view, core::style::Style *style, int x, int y);
void addPoint (int x, int y);