+ rename methods in Vector3 class

+ add convenience methods Cross and Dot to Vector3 class
+ fix bug in DistanceToLineSegment in Vector3 class

src/Mod/TechDraw/App/DrawViewSection.cpp

@@ -164,7 +164,7 @@ App::DocumentObjectExecReturn *DrawViewSection::execute(void)
         // Project each bounding box point onto projection plane and find larges u,v values
 
         Base::Vector3d pnt = (*it);
-        pnt.ProjToPlane(plnPnt, plnNorm);
+        pnt.ProjectToPlane(plnPnt, plnNorm);
 
         uMax = std::max(uMax, std::abs(plnPnt[0] - pnt[0]));
         vMax = std::max(vMax, std::abs(plnPnt[1] - pnt[1]));

src/Mod/TechDraw/Gui/QGIViewDimension.cpp

@@ -1190,8 +1190,8 @@ void QGIViewDimension::draw()
 
                 Base::Vector3d avg = (norm1 + norm2) / 2.;
 
-                norm1 = norm1.ProjToLine(avg, norm1);
-                norm2 = norm2.ProjToLine(avg, norm2);
+                norm1 = norm1.ProjectToLine(avg, norm1);
+                norm2 = norm2.ProjectToLine(avg, norm2);
 
                 ar1->setPos(ar1Pos.x,ar1Pos.y );
                 ar2->setPos(ar2Pos.x,ar2Pos.y );