X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fline.cpp;h=060868562a8299c3d335bb849f3657d4a0d7417c;hb=2549a213bacfb2f6993ec143083d72b716854345;hp=8425e62356e5062cee58b39a50da4793e0c11090;hpb=a42277d4d950d32459b16b3ec8ee8287c9c0afab;p=architektonas diff --git a/src/line.cpp b/src/line.cpp index 8425e62..0608685 100644 --- a/src/line.cpp +++ b/src/line.cpp @@ -21,6 +21,7 @@ #include #include "container.h" #include "dimension.h" +#include "geometry.h" #include "mathconstants.h" #include "painter.h" @@ -122,6 +123,15 @@ Line::~Line() /*virtual*/ bool Line::Collided(Vector point) { +/* +what we can do here is set ignoreClicks to true to keep other objects that are +selected from deselecting themselves. Will that fuck up something else? Not sure +yet... :-/ +*/ + // Someone told us to fuck off, so we'll fuck off. :-) + if (ignoreClicks) + return false; + // We can assume this, since this is a mouse down event here. objectWasDragged = false; HitTest(point); @@ -162,6 +172,13 @@ key to make it draw/show on the other side... TODO: Make Dimension preview with modifier keys for showing on other side */ +/* + +N.B.: This no longer works, as the DrawDimension object takes precedence over this code. + THIS DOES NOTHING ANYMORE!!! + +*/ +#if 0 // Is the dimension tool active? Let's use it: if (dimensionActive) { @@ -213,6 +230,7 @@ a dimension only) Draw() function... :-/ return true; } } +#endif if (state == OSInactive) { @@ -325,6 +343,18 @@ a dimension only) Draw() function... :-/ needUpdate = true; //doesn't work QMainWindow::statusBar()->setText("You are manipulating a line"); + + // Tell connected objects to move themselves... + if (draggingLine) + { + std::vector::iterator i; + + for(i=connected.begin(); i!=connected.end(); i++) + { + if ((*i).object->type == OTLine) + ((Line *)((*i).object))->MovePointAtParameter((*i).t, delta); + } + } } /* @@ -439,22 +469,13 @@ the horizontal line or vertical line that intersects from the current mouse posi /*virtual*/ bool Line::HitTest(Point point) { -// SaveHitState(); - hitPoint1 = hitPoint2 = hitLine = false; Vector lineSegment = endpoint - position; Vector v1 = point - position; Vector v2 = point - endpoint; - double t = Vector::Parameter(position, endpoint, point); + double t = Geometry::ParameterOfLineAndPoint(position, endpoint, point); double distance; - // Geometric interpretation: - // The parameter "t" on the vector lineSegment is where the normal of - // lineSegment coincides with point. If t < 0, the normal lies beyond the - // 1st endpoint. If t > 1, then the normal lies beyond the 2nd endpoint. We - // only calculate the length of the normal between the point and the - // lineSegment when the parameter is between 0 and 1. - // Geometric interpretation of "distance = ?Det?(ls, v1) / |ls|": // If the segment endpoints are s and e, and the point is p, then the test // for the perpendicular intercepting the segment is equivalent to insisting @@ -490,7 +511,6 @@ the horizontal line or vertical line that intersects from the current mouse posi hitLine = true; return (hitPoint1 || hitPoint2 || hitLine ? true : false); -// return HitStateChanged(); } @@ -531,23 +551,29 @@ same reference number. /*virtual*/ Vector Line::GetPointAtParameter(double parameter) { +// Is there any real reason to clamp this to the endpoints? +// (hey, whaddya know? this was masking a bug!) +#if 0 if (parameter <= 0) return position; else if (parameter >= 1.0) return endpoint; +#endif - // Our parameter lies between zero and one, so calculate it! - Vector v(endpoint, position); - double length = v.Magnitude(); - // We scale the magnitude of v so that it lies between 0 and 1... - // By multiplying the parameter by the magnitude, we obtain the point we - // want. No scaling necessary as it's inherent in the approach! - double spotOnLength = length * parameter; - - // To get our point, we use the initial point of the line and add in our - // scaled point. - Vector result = position + (v * spotOnLength); - return result; + // The parameter is a percentage of the length of the vector, so all we + // have to do is scale the vector by it to find the point. + return position + (Vector(position, endpoint) * parameter); +} + + +/*virtual*/ void Line::MovePointAtParameter(double parameter, Vector v) +{ + if (parameter == 0) + position += v; + else if (parameter == 1.0) + endpoint += v; + else + {} // Not sure how to handle this case :-P } @@ -565,68 +591,44 @@ same reference number. } -/*virtual*/ void Line::Rotate(Vector point, double angle) +/*virtual*/ void Line::Rotate(Point point, double angle) { + Point l1 = Geometry::RotatePointAroundPoint(position, point, angle); + Point l2 = Geometry::RotatePointAroundPoint(endpoint, point, angle); + position = l1; + endpoint = l2; } -/*virtual*/ void Line::Scale(Vector point, double amount) +/*virtual*/ void Line::Scale(Point point, double amount) { } -/*virtual*/ Object * Line::Mirror(Vector p1, Vector p2) -{ -#if 0 - return NULL; - -double Vector::Parameter(Vector v1, Vector v2, Vector p) +/*virtual*/ void Line::Mirror(Point p1, Point p2) { - // Geometric interpretation: - // The parameterized point on the vector lineSegment is where the normal of - // the lineSegment to the point intersects lineSegment. If the pp < 0, then - // the perpendicular lies beyond the 1st endpoint. If pp > 1, then the - // perpendicular lies beyond the 2nd endpoint. - - Vector lineSegment = v2 - v1; - double magnitude = lineSegment.Magnitude(); - Vector pointSegment = p - v1; - double t = lineSegment.Dot(pointSegment) / (magnitude * magnitude); - return t; + Point l1 = Geometry::MirrorPointAroundLine(position, p1, p2); + Point l2 = Geometry::MirrorPointAroundLine(endpoint, p1, p2); + position = l1; + endpoint = l2; } -// Return the normal to the linesegment formed by the passed in points. -// (Not sure which is head or tail, or which hand the normal lies) -/*static*/ Vector Vector::Normal(Vector v1, Vector v2) -#endif - - double t1 = Vector::Parameter(p1, p2, position); - double t2 = Vector::Parameter(p1, p2, endpoint); - - Vector unit = Vector(p1, p2).Unit(); - Vector v1 = unit * t1; - Vector v2 = unit * t2; - -// Vector normal = Vector::Normal(p1, p2); - // Get the points normal to position & endpoint to the line passed in - // (these are tails) - Vector v3 = p1 + v1; - Vector v4 = p1 + v2; - - // Make our mirrored vectors - Vector v5 = -(position - v3); - Vector v6 = -(endpoint - v4); +/*virtual*/ void Line::Save(void) +{ + Object::Save(); + oldEndpoint = endpoint; +} - // Find the points - Vector v7 = v3 + v5; - Vector v8 = v4 + v6; - return new Line(v7, v8); +/*virtual*/ void Line::Restore(void) +{ + Object::Restore(); + endpoint = oldEndpoint; } -void Line::SetDimensionOnLine(Dimension * dimension/*=NULL*/) +void Line::SetDimensionOnLine(Dimension * dimension/*= NULL*/) { // If they don't pass one in, create it for the caller. if (dimension == NULL)