void drawAxis() {
// X (by y)
glColor3f(1, 0, 0);
drawLineY();
//Y (by x)
glColor3f(0, 1, 0);
glPushMatrix();
glRotatef(-90, 0, 0, 1);
drawLineY();
glPopMatrix();
//Z (by XY)
glColor3f(0.2, 0.2, 1);
glPushMatrix();
glRotatef(-45, 0, 0, 1);
glRotatef(90, 1, 0, 0);
drawLineY();
glPopMatrix();
}
// build a horizontal line: draw it and check for alignment
void SceneGridHandler::buildLineY(qreal deltaY
, qreal pointY, qreal correctionY, qreal &myY1, qreal &myY2)
{
if (deltaY > radius) {
return;
}
if (mShowAlignment) {
drawLineY(pointY);
}
if (makeJumpY(deltaY, pointY - correctionY)) {
myY1 = recalculateY1();
myY2 = recalculateY2(myY1);
}
}
/*!
Compute the Y-axis scanlines intersections of a polygon.
\param polygon : Polygon composed by an array of lines.
\param ID : ID of the polygon (has to be know when using queries).
\param scanlines : Resulting intersections.
*/
void
vpMbScanLine::drawPolygonY(const std::vector<std::pair<vpPoint, unsigned int> > &polygon,
const int ID,
std::vector<std::vector<vpMbScanLineSegment> > &scanlines)
{
if (polygon.size() < 2)
return;
if (polygon.size() == 2)
{
vpColVector p1, p2;
createVectorFromPoint(polygon.front().first, p1, K);
createVectorFromPoint(polygon.back().first, p2, K);
drawLineY(p1,
p2,
makeMbScanLineEdge(polygon.front().first, polygon.back().first),
ID,
scanlines);
return;
}
std::vector<std::vector<vpMbScanLineSegment> > local_scanlines;
local_scanlines.resize(h);
for(size_t i = 0 ; i < polygon.size() ; ++i)
{
vpColVector p1, p2;
createVectorFromPoint(polygon[i].first, p1, K);
createVectorFromPoint(polygon[(i + 1) % polygon.size()].first, p2, K);
drawLineY(p1, p2, makeMbScanLineEdge(polygon[i].first, polygon[(i + 1) % polygon.size()].first), ID, local_scanlines);
}
createScanLinesFromLocals(scanlines,local_scanlines,h);
}
