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1059543931
* Fixed Rect to always set maxSize and BoxLayout navigation * removed commented out focusItem * Removed redundant handling * General BoxLayout fixes
81 lines
1.2 KiB
C++
81 lines
1.2 KiB
C++
/*
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* BoundingBox.cpp
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*
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* Created on: 4 mar 2019
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* Author: robert
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*/
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#include "BoundingBox.hpp"
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namespace gui {
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BoundingBox::BoundingBox() : x {0}, y{0}, w{0}, h{0} {
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}
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BoundingBox::BoundingBox(int32_t x, int32_t y, uint32_t w, uint32_t h)
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{
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this->x = x;
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this->y = y;
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this->w = w;
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this->h = h;
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}
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BoundingBox::~BoundingBox() {
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}
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bool BoundingBox::intersect( const BoundingBox& box1, const BoundingBox& box2, BoundingBox& result ) {
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const BoundingBox* l;
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const BoundingBox* r;
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if( box1.x < box2.x ) {
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l = &box1; r = &box2;
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}
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else {
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l = &box2; r = &box1;
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}
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int w = l->x + l->w - r->x;
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if( w <= 0 )
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{
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result.clear();
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return false;
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}
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//most left bbox overlap right box entirely
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if( (l->x + l->w) >= (r->x + r->w) )
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{
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w = r->w;
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}
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result.w = w;
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result.x = r->x;
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//vertical check
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//select bbox that is higher
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const BoundingBox* u;
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if( box1.y < box2.y ) {
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l = &box1; u = &box2;
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}
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else {
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l = &box2; u = &box1;
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}
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int h = l->y + l->h - u->y;
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if( h <= 0 )
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{
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result.clear();
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return false;
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}
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//most lower bbox overlap upper box entirely
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if( (l->y + l->h) >= (u->y + u->h) )
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{
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h = u->h;
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}
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result.y = u->y;
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result.h = h;
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return true;
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}
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} /* namespace gui */
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