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#include "Line.h"
Line::Line() {}
Line::~Line() {}
bool Line::Contains(wxPoint2DDouble position) const
{
if(PointToLineDistance(position) < 5.0) {
return true;
}
return false;
}
void Line::Draw(wxPoint2DDouble translation, double scale) const
{
std::vector<wxPoint2DDouble> pointList = m_pointList;
if(!m_inserted && pointList.size() > 0) {
wxPoint2DDouble secondPoint = m_position;
if(pointList.size() > 2) {
secondPoint = pointList[2];
}
pointList[1] = GetSwitchPoint(m_parentList[0], pointList[0], secondPoint);
pointList.push_back(m_position);
}
// Line selected (Layer 1).
if(m_selected) {
glLineWidth(1.5 + m_borderSize * 2.0);
glColor4d(0.0, 0.5, 1.0, 0.5);
DrawLine(pointList);
// Draw nodes selection.
if(pointList.size() > 0) {
DrawCircle(pointList[0], 5.0 + m_borderSize, 10, GL_POLYGON);
if(m_inserted) {
DrawCircle(pointList[pointList.size() - 1], 5.0 + +m_borderSize, 10, GL_POLYGON);
}
}
}
// Draw line (Layer 2)
glLineWidth(1.5);
glColor4d(0.2, 0.2, 0.2, 1.0);
DrawLine(pointList);
// Draw nodes.
if(pointList.size() > 0) {
glColor4d(0.2, 0.2, 0.2, 1.0);
DrawCircle(pointList[0], 5.0, 10, GL_POLYGON);
if(m_inserted) {
DrawCircle(pointList[pointList.size() - 1], 5.0, 10, GL_POLYGON);
}
}
// Draw pickboxes (Layer 3).
if(m_showPickbox) {
glPushMatrix();
glLoadIdentity();
for(int i = 2; i < (int)m_pointList.size() - 2; i++) {
DrawPickbox(WorldToScreen(m_pointList[i], translation, scale));
}
glPopMatrix();
}
}
wxCursor Line::GetBestPickboxCursor() const { return wxCURSOR_SIZING; }
bool Line::AddParent(Element* parent, wxPoint2DDouble position)
{
if(parent) {
// First bus.
if(m_parentList.size() == 0) {
m_position = position;
m_parentList.push_back(parent);
wxPoint2DDouble parentPt = parent->RotateAtPosition(
position, -parent->GetAngle()); // Rotate click to horizontal position.
parentPt.m_y = parent->GetPosition().m_y; // Centralize on bus.
parentPt = parent->RotateAtPosition(parentPt, parent->GetAngle()); // Rotate back.
m_pointList.push_back(parentPt); // First point
m_pointList.push_back(GetSwitchPoint(parent, parentPt, m_position));
return false;
}
// Second bus.
else if(parent != m_parentList[0])
{
m_parentList.push_back(parent);
wxPoint2DDouble parentPt = parent->RotateAtPosition(
position, -parent->GetAngle()); // Rotate click to horizontal position.
parentPt.m_y = parent->GetPosition().m_y; // Centralize on bus.
parentPt = parent->RotateAtPosition(parentPt, parent->GetAngle()); // Rotate back.
// Set first switch point.
wxPoint2DDouble secondPoint = parentPt;
if(m_pointList.size() > 2) {
secondPoint = m_pointList[2];
}
m_pointList[1] = GetSwitchPoint(m_parentList[0], m_pointList[0], secondPoint);
// Set the second switch point.
m_pointList.push_back(GetSwitchPoint(parent, parentPt, m_pointList[m_pointList.size() - 1]));
m_pointList.push_back(parentPt); // Last point.
m_inserted = true;
return true;
}
}
return false;
}
bool Line::Intersects(wxRect2DDouble rect) const
{
for(auto it = m_pointList.begin(); it != m_pointList.end(); ++it) {
if(rect.Contains(*it)) return true;
}
return false;
}
void Line::MovePickbox(wxPoint2DDouble position)
{
if(m_activePickboxID == ID_PB_NONE) return;
for(int i = 2; i < (int)m_pointList.size() - 2; i++) {
if(m_activePickboxID == i) {
m_pointList[i] = m_movePts[i] + position - m_moveStartPt;
UpdateSwitchesPosition();
}
}
}
bool Line::PickboxContains(wxPoint2DDouble position)
{
for(int i = 2; i < (int)m_pointList.size() - 2; i++) {
wxRect2DDouble rect(m_pointList[i].m_x - 5.0, m_pointList[i].m_y - 5.0, 10.0, 10.0);
if(rect.Contains(position)) {
m_activePickboxID = i;
return true;
}
}
return false;
}
void Line::RotateNode(Element* parent)
{
if(parent == m_parentList[0]) {
m_pointList[0] = parent->RotateAtPosition(m_pointList[0], m_rotationAngle);
}
else if(parent == m_parentList[1])
{
m_pointList[m_pointList.size() - 1] =
parent->RotateAtPosition(m_pointList[m_pointList.size() - 1], m_rotationAngle);
}
UpdateSwitchesPosition();
}
void Line::AddPoint(wxPoint2DDouble point)
{
if(m_parentList.size() != 0) {
m_pointList.push_back(point);
}
}
void Line::StartMove(wxPoint2DDouble position)
{
m_moveStartPt = position;
m_movePts = m_pointList;
}
void Line::MoveNode(Element* parent, wxPoint2DDouble position)
{
// First bus.
if(parent == m_parentList[0]) {
m_pointList[0] = m_movePts[0] + position - m_moveStartPt;
}
// Second bus.
else if(parent == m_parentList[1])
{
m_pointList[m_pointList.size() - 1] = m_movePts[m_pointList.size() - 1] + position - m_moveStartPt;
}
// If the line is selected, move all the points, except the switches and buses points.
if(m_selected) {
for(int i = 2; i < (int)m_pointList.size() - 2; i++) {
m_pointList[i] = m_movePts[i] + position - m_moveStartPt;
}
}
// Recalculate switches positions
UpdateSwitchesPosition();
}
void Line::UpdateSwitchesPosition()
{
m_pointList[1] = GetSwitchPoint(m_parentList[0], m_pointList[0], m_pointList[2]);
m_pointList[m_pointList.size() - 2] =
GetSwitchPoint(m_parentList[1], m_pointList[m_pointList.size() - 1], m_pointList[m_pointList.size() - 3]);
}
double Line::PointToLineDistance(wxPoint2DDouble point) const
{
//[Ref] http://geomalgorithms.com/a02-_lines.html
double distance = 100.0; // Big initial distance.
wxPoint2DDouble p0 = point;
for(int i = 0; i < (int)m_pointList.size() - 1; i++) {
double d = 0.0;
wxPoint2DDouble p1 = m_pointList[i];
wxPoint2DDouble p2 = m_pointList[i + 1];
wxPoint2DDouble v = p2 - p1;
wxPoint2DDouble w = p0 - p1;
double c1 = w.m_x * v.m_x + w.m_y * v.m_y;
double c2 = v.m_x * v.m_x + v.m_y * v.m_y;
if(c1 <= 0.0) {
d = std::sqrt(std::pow(p0.m_y - p1.m_y, 2) + std::pow(p0.m_x - p1.m_x, 2));
}
else if(c2 <= c1)
{
d = std::sqrt(std::pow(p0.m_y - p2.m_y, 2) + std::pow(p0.m_x - p2.m_x, 2));
}
else
{
d = std::abs((p2.m_y - p1.m_y) * p0.m_x - (p2.m_x - p1.m_x) * p0.m_y + p2.m_x * p1.m_y -
p2.m_y * p1.m_x) /
std::sqrt(std::pow(p2.m_y - p1.m_y, 2) + std::pow(p2.m_x - p1.m_x, 2));
}
if(d < distance) distance = d;
}
return distance;
}
bool Line::GetContextMenu(wxMenu& menu)
{
menu.Append(ID_EDIT_LINE, _("Edit line"));
return true;
}
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