bool MannequinMoveManipulator::intersectManip(MPxManipulatorNode* manip) const {
M3dView view = M3dView::active3dView();
float size = _manipScale * MFnManip3D::globalSize();
MPoint xEnd = _origin + (_x * size);
MPoint yEnd = _origin + (_y * size);
MPoint zEnd = _origin + (_z * size);
short mx, my;
manip->mousePosition(mx, my);
short ox, oy, xx, xy, yx, yy, zx, zy;
view.worldToView(_origin, ox, oy);
view.worldToView(xEnd, xx, xy);
view.worldToView(yEnd, yx, yy);
view.worldToView(zEnd, zx, zy);
// Calculate approximate handle size in view space.
float viewLength = 0.0f;
viewLength = std::max(viewLength,
sqrtf(pow(float(xx) - float(ox), 2) + pow(float(xy) - float(oy), 2)));
viewLength = std::max(viewLength,
sqrtf(pow(float(yx) - float(ox), 2) + pow(float(yy) - float(oy), 2)));
viewLength = std::max(viewLength,
sqrtf(pow(float(zx) - float(ox), 2) + pow(float(zy) - float(oy), 2)));
float handleSize = MFnManip3D::handleSize() / 100.0f; // Probably on [0, 100].
float handleHeight = viewLength * handleSize * 0.5f;
float handleRadius = std::max(handleHeight * 0.3f, 4.0f);
// Note: slightly exaggerated; normally handleHeight * 0.25f.
// Determine if we're in range to any of the lines.
float curDist, t;
curDist = Util::distanceToLine(ox, oy, xx, xy, mx, my, &t);
if (curDist < handleRadius && t >= 0.0f && t <= 1.0f) {
return true;
}
curDist = Util::distanceToLine(ox, oy, yx, yy, mx, my, &t);
if (curDist < handleRadius && t >= 0.0f && t <= 1.0f) {
return true;
}
curDist = Util::distanceToLine(ox, oy, zx, zy, mx, my, &t);
if (curDist < handleRadius && t >= 0.0f && t <= 1.0f) {
return true;
}
return false;
}
MStatus MannequinMoveManipulator::doPress(M3dView& view) {
getPointValue(_translateIndex, false, _opValueBegin);
GLuint activeAxis;
glActiveName(activeAxis);
if (activeAxis == _glPickableItem + 0) {
_opAxis = _x;
_opAxisIndex = 0;
} else if (activeAxis == _glPickableItem + 1) {
_opAxis = _y;
_opAxisIndex = 1;
} else if (activeAxis == _glPickableItem + 2) {
_opAxis = _z;
_opAxisIndex = 2;
} else {
_opAxis = MVector::zero;
_opValid = false;
return MS::kUnknownParameter;
}
_opOrigin = _origin;
// Determine the translation "plane"; it is orthogonal to the axis and faces
// the view as best as possible.
short originX, originY;
view.worldToView(_opOrigin, originX, originY);
MPoint rayNear;
MVector dirToOrigin;
view.viewToWorld(originX, originY, rayNear, dirToOrigin);
MVector dirInPlane = dirToOrigin ^ _opAxis;
_opPlaneNormal = dirInPlane ^ _opAxis;
// Determine where the current mouse ray hits the plane.
MPoint rayOrigin;
MVector rayDirection;
mouseRayWorld(rayOrigin, rayDirection);
MPoint isect;
bool didIsect = Util::rayPlaneIntersection(rayOrigin,
rayDirection,
_opOrigin,
_opPlaneNormal,
&isect);
if (!didIsect) {
_opValid = false;
return MS::kUnknownParameter;
}
_opHitBegin = isect;
_opValid = true;
// We need to calculate the handle directions in parent space. This is
// because the handle positions align with the child pivot rotation, so they
// DO NOT correspond to the child's X, Y, and Z-position, which are
// indicated in terms of the parent's coordinate space.
MMatrix parentInverse = _parentXform.asMatrixInverse();
_xInParentSpace = _x * parentInverse;
_yInParentSpace = _y * parentInverse;
_zInParentSpace = _z * parentInverse;
return MS::kSuccess;
}
MStatus lassoTool::doRelease( MEvent & /*event*/ )
// Selects objects within the lasso
{
MStatus stat;
MSelectionList incomingList, boundingBoxList, newList;
if (!firstDraw) {
// Redraw the lasso to clear it.
view.beginXorDrawing(true, true, 1.0f, M3dView::kStippleDashed);
draw_lasso();
view.endXorDrawing();
}
// We have a non-zero sized lasso. Close the lasso, and sort
// all the points on it.
append_lasso(lasso[0].h, lasso[0].v);
qsort( &(lasso[0]), num_points, sizeof( coord ),
(int (*)(const void *, const void *))xycompare);
// Save the state of the current selections. The "selectFromSceen"
// below will alter the active list, and we have to be able to put
// it back.
MGlobal::getActiveSelectionList(incomingList);
// As a first approximation to the lasso, select all components with
// the bounding box that just contains the lasso.
MGlobal::selectFromScreen( min.h, min.v, max.h, max.v,
MGlobal::kReplaceList );
// Get the list of selected items from within the bounding box
// and create a iterator for them.
MGlobal::getActiveSelectionList(boundingBoxList);
// Restore the active selection list to what it was before we
// the "selectFromScreen"
MGlobal::setActiveSelectionList(incomingList, MGlobal::kReplaceList);
// Iterate over the objects within the bounding box, extract the
// ones that are within the lasso, and add those to newList.
MItSelectionList iter(boundingBoxList);
newList.clear();
bool foundEntireObjects = false;
bool foundComponents = false;
for ( ; !iter.isDone(); iter.next() ) {
MDagPath dagPath;
MObject component;
MPoint point;
coord pt;
MObject singleComponent;
iter.getDagPath( dagPath, component );
if (component.isNull()) {
foundEntireObjects = true;
continue; // not a component
}
foundComponents = true;
switch (component.apiType()) {
case MFn::kCurveCVComponent:
{
MItCurveCV curveCVIter( dagPath, component, &stat );
for ( ; !curveCVIter.isDone(); curveCVIter.next() ) {
point = curveCVIter.position(MSpace::kWorld, &stat );
view.worldToView( point, pt.h, pt.v, &stat );
if (!stat) {
stat.perror("Could not get position");
continue;
}
if ( point_in_lasso( pt ) ) {
singleComponent = curveCVIter.cv();
newList.add (dagPath, singleComponent);
}
}
break;
}
case MFn::kSurfaceCVComponent:
{
MItSurfaceCV surfCVIter( dagPath, component, true, &stat );
for ( ; !surfCVIter.isDone(); surfCVIter.next() ) {
point = surfCVIter.position(MSpace::kWorld, &stat );
view.worldToView( point, pt.h, pt.v, &stat );
if (!stat) {
stat.perror("Could not get position");
continue;
}
if ( point_in_lasso( pt ) ) {
singleComponent = surfCVIter.cv();
newList.add (dagPath, singleComponent);
}
}
break;
}
case MFn::kMeshVertComponent:
{
MItMeshVertex vertexIter( dagPath, component, &stat );
for ( ; !vertexIter.isDone(); vertexIter.next() ) {
point = vertexIter.position(MSpace::kWorld, &stat );
view.worldToView( point, pt.h, pt.v, &stat );
if (!stat) {
stat.perror("Could not get position");
continue;
}
if ( point_in_lasso( pt ) ) {
singleComponent = vertexIter.vertex();
newList.add (dagPath, singleComponent);
}
}
break;
}
case MFn::kMeshEdgeComponent:
{
MItMeshEdge edgeIter( dagPath, component, &stat );
for ( ; !edgeIter.isDone(); edgeIter.next() ) {
point = edgeIter.center(MSpace::kWorld, &stat );
view.worldToView( point, pt.h, pt.v, &stat );
if (!stat) {
stat.perror("Could not get position");
continue;
}
if ( point_in_lasso( pt ) ) {
singleComponent = edgeIter.edge();
newList.add (dagPath, singleComponent);
}
}
break;
}
case MFn::kMeshPolygonComponent:
{
MItMeshPolygon polygonIter( dagPath, component, &stat );
for ( ; !polygonIter.isDone(); polygonIter.next() ) {
point = polygonIter.center(MSpace::kWorld, &stat );
view.worldToView( point, pt.h, pt.v, &stat );
if (!stat) {
stat.perror("Could not get position");
continue;
}
if ( point_in_lasso( pt ) ) {
singleComponent = polygonIter.polygon();
newList.add (dagPath, singleComponent);
}
}
break;
}
default:
#ifdef DEBUG
cerr << "Selected unsupported type: (" << component.apiType()
<< "): " << component.apiTypeStr() << endl;
#endif /* DEBUG */
continue;
}
}
// Warn user if zie is trying to select objects rather than components.
if (foundEntireObjects && !foundComponents) {
MGlobal::displayWarning("lassoTool can only select components, not entire objects.");
}
// Update the selection list as indicated by the modifier keys.
MGlobal::selectCommand(newList, listAdjustment);
// Free the memory that held our lasso points.
free(lasso);
lasso = (coord*) 0;
maxSize = 0;
num_points = 0;
return MS::kSuccess;
}