本文整理汇总了C++中LLBBox::GetMaxY方法的典型用法代码示例。如果您正苦于以下问题：C++ LLBBox::GetMaxY方法的具体用法？C++ LLBBox::GetMaxY怎么用？C++ LLBBox::GetMaxY使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类LLBBox的用法示例。
在下文中一共展示了LLBBox::GetMaxY方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: DrawGLLines
void Route::DrawGLLines( ViewPort &vp, ocpnDC *dc )
{
#ifdef ocpnUSE_GL
float pix_full_circle = WGS84_semimajor_axis_meters * mercator_k0 * 2 * PI * vp.view_scale_ppm;
bool r1valid = false;
wxPoint2DDouble r1;
wxPoint2DDouble lastpoint;
wxRoutePointListNode *node = pRoutePointList->GetFirst();
RoutePoint *prp2 = node->GetData();
cc1->GetDoubleCanvasPointPix( prp2->m_lat, prp2->m_lon, &lastpoint);
if(m_nPoints == 1 && dc) { // single point.. make sure it shows up for highlighting
cc1->GetDoubleCanvasPointPix( prp2->m_lat, prp2->m_lon, &r1);
dc->DrawLine(r1.m_x, r1.m_y, r1.m_x+2, r1.m_y+2);
return;
}
// Handle offscreen points
LLBBox bbox = vp.GetBBox();
// dc is passed for thicker highlighted lines (performance not very important)
if( !dc )
glBegin(GL_LINES);
unsigned short int FromSegNo = prp2->m_GPXTrkSegNo;
for(node = node->GetNext(); node; node = node->GetNext()) {
RoutePoint *prp1 = prp2;
prp2 = node->GetData();
unsigned short int ToSegNo = prp2->m_GPXTrkSegNo;
// Provisional, to properly set status of last point in route
prp2->m_pos_on_screen = false;
if (FromSegNo != ToSegNo) {
FromSegNo = ToSegNo;
r1valid = false;
} else {
wxPoint2DDouble r2;
cc1->GetDoubleCanvasPointPix( prp2->m_lat, prp2->m_lon, &r2);
if(wxIsNaN(r2.m_x)) {
r1valid = false;
continue;
}
lastpoint = r2; // For active track segment to ownship
// don't need to perform calculations or render segment
// if both points are past any edge of the vp
// TODO: use these optimizations for dc mode
bool lat1l = prp1->m_lat < bbox.GetMinY(), lat2l = prp2->m_lat < bbox.GetMinY();
bool lat1r = prp1->m_lat > bbox.GetMaxY(), lat2r = prp2->m_lat > bbox.GetMaxY();
if( (lat1l && lat2l) || (lat1r && lat2r) ) {
r1valid = false;
prp1->m_pos_on_screen = false;
continue;
}
bool lon1l, lon1r, lon2l, lon2r;
TestLongitude(prp1->m_lon, bbox.GetMinX(), bbox.GetMaxX(), lon1l, lon1r);
TestLongitude(prp2->m_lon, bbox.GetMinX(), bbox.GetMaxX(), lon2l, lon2r);
if( (lon1l && lon2l) || (lon1r && lon2r) ) {
r1valid = false;
prp1->m_pos_on_screen = false;
continue;
}
if(!r1valid) {
cc1->GetDoubleCanvasPointPix( prp1->m_lat, prp1->m_lon, &r1);
if(wxIsNaN(r1.m_x))
continue;
}
// we must decide which way to go in longitude
// for projections which wrap, in this case, we will render two lines
// (one may often be off screen which would be nice to fix but complicate things here
// anyway, in some cases both points are on screen, but the route wraps to either side
// so two lines are needed to draw this properly
double adder = 0;
if( (vp.m_projection_type == PROJECTION_MERCATOR ||
vp.m_projection_type == PROJECTION_EQUIRECTANGULAR) ) {
float olon = vp.clon > 0 ? vp.clon - 180 : vp.clon + 180;
if(prp1->m_lon < prp2->m_lon) {
if(prp2->m_lon - prp1->m_lon < 180) {
if(olon > prp1->m_lon && olon < prp2->m_lon)
adder = pix_full_circle;
} else
if(olon < prp1->m_lon || olon > prp2->m_lon)
adder = -pix_full_circle;
} else
if(prp1->m_lon - prp2->m_lon < 180) {
if(olon < prp1->m_lon && olon > prp2->m_lon)
adder = -pix_full_circle;
} else
if(olon > prp1->m_lon || olon < prp2->m_lon)
adder = pix_full_circle;
//.........这里部分代码省略.........
示例2: DrawGLLines
void Route::DrawGLLines( ViewPort &VP, ocpnDC *dc )
{
#ifdef ocpnUSE_GL
float pix_full_circle = WGS84_semimajor_axis_meters * mercator_k0 * 2 * PI * VP.view_scale_ppm;
bool r1valid = false;
wxPoint2DDouble r1;
wxPoint2DDouble lastpoint;
wxRoutePointListNode *node = pRoutePointList->GetFirst();
RoutePoint *prp2 = node->GetData();
cc1->GetDoubleCanvasPointPix( prp2->m_lat, prp2->m_lon, &lastpoint);
if(m_nPoints == 1 && dc) { // single point.. make sure it shows up for highlighting
cc1->GetDoubleCanvasPointPix( prp2->m_lat, prp2->m_lon, &r1);
dc->DrawLine(r1.m_x, r1.m_y, r1.m_x+2, r1.m_y+2);
return;
}
// dc is passed for thicker highlighted lines (performance not very important)
if( !dc )
glBegin(GL_LINES);
unsigned short int FromSegNo = prp2->m_GPXTrkSegNo;
for(node = node->GetNext(); node; node = node->GetNext()) {
RoutePoint *prp1 = prp2;
prp2 = node->GetData();
unsigned short int ToSegNo = prp2->m_GPXTrkSegNo;
// Provisional, to properly set status of last point in route
prp2->m_pos_on_screen = false;
if (FromSegNo != ToSegNo) {
FromSegNo = ToSegNo;
r1valid = false;
} else {
wxPoint2DDouble r2;
cc1->GetDoubleCanvasPointPix( prp2->m_lat, prp2->m_lon, &r2);
lastpoint = r2; // For active track segment to ownship
// Handle offscreen points
LLBBox bbox = VP.GetBBox();
// don't need to perform calculations or render segment
// if both points are past any edge of the vp
// TODO: use these optimizations for dc mode
bool lat1l = prp1->m_lat < bbox.GetMinY(), lat2l = prp2->m_lat < bbox.GetMinY();
bool lat1r = prp1->m_lat > bbox.GetMaxY(), lat2r = prp2->m_lat > bbox.GetMaxY();
if( (lat1l && lat2l) || (lat1r && lat2r) ) {
r1valid = false;
prp1->m_pos_on_screen = false;
continue;
}
bool lon1l, lon1r, lon2l, lon2r;
TestLongitude(prp1->m_lon, bbox.GetMinX(), bbox.GetMaxX(), lon1l, lon1r);
TestLongitude(prp2->m_lon, bbox.GetMinX(), bbox.GetMaxX(), lon2l, lon2r);
if( (lon1l && lon2l) || (lon1r && lon2r) ) {
r1valid = false;
prp1->m_pos_on_screen = false;
continue;
}
if(!r1valid)
cc1->GetDoubleCanvasPointPix( prp1->m_lat, prp1->m_lon, &r1);
// In the cases where one point is on, and one off
// we must decide which way to go in longitude
double adder1 = 0, adder2 = 0;
if(!(lon1l || lon1r) && (lon2l || lon2r) ) { // first point is on screen, second not
if( r2.m_x < r1.m_x )
adder2 = pix_full_circle;
else
adder2 = -pix_full_circle;
if( fabs(r1.m_x - r2.m_x) < fabs(r1.m_x - ( r2.m_x + adder2 )) )
adder2 = 0;
} else if(lon1l || lon1r) { // first point is off screen
if( r1.m_x < r2.m_x )
adder1 = pix_full_circle;
else
adder1 = -pix_full_circle;
if( fabs(r1.m_x - r2.m_x) < fabs(r2.m_x - (r1.m_x + adder1)) )
adder1 = 0;
}
if( dc )
dc->DrawLine(r1.m_x + adder1, r1.m_y, r2.m_x + adder2, r2.m_y);
else {
glVertex2f(r1.m_x + adder1, r1.m_y);
glVertex2f(r2.m_x + adder2, r2.m_y);
// cache screen position for arrows and points
if(!r1valid) {
prp1->m_pos_on_screen = !lat1l && !lat1r && !lon1l && !lon1r;
prp1->m_screen_pos = r1;
}
//.........这里部分代码省略.........