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#include "TranslateManipulator.h"
#include "selection/SelectionPool.h"
#include "selection/BestPoint.h"
namespace selection
{
constexpr const char* const RKEY_TRANSLATE_CONSTRAINED = "user/ui/xyview/translateConstrained";
TranslateManipulator::TranslateManipulator(ManipulationPivot& pivot, std::size_t segments, float length) :
_pivot(pivot),
_translator(std::bind(&ManipulationPivot::applyTranslation, &_pivot, std::placeholders::_1)),
_translateFree(_translator),
_translateAxis(_translator),
_arrowX({ length,0,0 }, _pivot2World._worldSpace),
_arrowY({ 0,length,0 }, _pivot2World._worldSpace),
_arrowZ({ 0,0,length }, _pivot2World._worldSpace),
_arrowHeadX({ length,0,0 }, _pivot2World._axisScreen, length / 8, length / 3, _pivot2World._worldSpace),
_arrowHeadY({ 0,length,0 }, _pivot2World._axisScreen, length / 8, length / 3, _pivot2World._worldSpace),
_arrowHeadZ({ 0,0,length }, _pivot2World._axisScreen, length / 8, length / 3, _pivot2World._worldSpace),
_quadScreen(16, _pivot2World._viewplaneSpace),
_translateConstrained(RKEY_TRANSLATE_CONSTRAINED)
{}
void TranslateManipulator::updateColours()
{
_arrowX.setColour(colourSelected(COLOUR_X(), _selectableX.isSelected()));
_arrowHeadX.setColour(colourSelected(COLOUR_X(), _selectableX.isSelected()));
_arrowY.setColour(colourSelected(COLOUR_Y(), _selectableY.isSelected()));
_arrowHeadY.setColour(colourSelected(COLOUR_Y(), _selectableY.isSelected()));
_arrowZ.setColour(colourSelected(COLOUR_Z(), _selectableZ.isSelected()));
_arrowHeadZ.setColour(colourSelected(COLOUR_Z(), _selectableZ.isSelected()));
_quadScreen.setColour(colourSelected(COLOUR_SCREEN(), _selectableScreen.isSelected()));
}
bool TranslateManipulator::axisIsVisible(const Vector3& axis) const
{
return fabs(_pivot2World._axisScreen.dot(axis)) < 0.95;
}
void TranslateManipulator::onPreRender(const RenderSystemPtr& renderSystem, const VolumeTest& volume)
{
if (!renderSystem)
{
clearRenderables();
return;
}
if (!_lineShader)
{
_lineShader = renderSystem->capture(BuiltInShaderType::ManipulatorWireframe);
}
if (!_arrowHeadShader)
{
_arrowHeadShader = renderSystem->capture(BuiltInShaderType::FlatshadeOverlay);
}
_pivot2World.update(_pivot.getMatrix4(), volume.GetModelview(), volume.GetProjection(), volume.GetViewport());
updateColours();
auto x = _pivot2World._worldSpace.xCol3().getNormalised();
auto y = _pivot2World._worldSpace.yCol3().getNormalised();
auto z = _pivot2World._worldSpace.zCol3().getNormalised();
if (axisIsVisible(x))
{
_arrowX.update(_lineShader);
_arrowHeadX.update(_arrowHeadShader);
}
else
{
_arrowX.clear();
_arrowHeadX.clear();
}
if (axisIsVisible(y))
{
_arrowY.update(_lineShader);
_arrowHeadY.update(_arrowHeadShader);
}
else
{
_arrowY.clear();
_arrowHeadY.clear();
}
if (axisIsVisible(z))
{
_arrowZ.update(_lineShader);
_arrowHeadZ.update(_arrowHeadShader);
}
else
{
_arrowZ.clear();
_arrowHeadZ.clear();
}
_quadScreen.update(_lineShader);
}
void TranslateManipulator::clearRenderables()
{
_arrowX.clear();
_arrowY.clear();
_arrowZ.clear();
_arrowHeadX.clear();
_arrowHeadY.clear();
_arrowHeadZ.clear();
_quadScreen.clear();
_lineShader.reset();
_arrowHeadShader.reset();
}
void TranslateManipulator::testSelect(SelectionTest& test, const Matrix4& pivot2world)
{
_pivot2World.update(_pivot.getMatrix4(), test.getVolume().GetModelview(),
test.getVolume().GetProjection(), test.getVolume().GetViewport());
SelectionPool selector;
auto x = _pivot2World._worldSpace.xCol3().getNormalised();
auto y = _pivot2World._worldSpace.yCol3().getNormalised();
auto z = _pivot2World._worldSpace.zCol3().getNormalised();
bool show_x = axisIsVisible(x);
bool show_y = axisIsVisible(y);
bool show_z = axisIsVisible(z);
{
Matrix4 local2view(test.getVolume().GetViewProjection().getMultipliedBy(_pivot2World._viewpointSpace));
{
SelectionIntersection best;
Quad_BestPoint(local2view, eClipCullCW, &_quadScreen.getRawPoints().front(), best);
if(best.isValid())
{
best = SelectionIntersection(0, 0);
selector.addSelectable(best, &_selectableScreen);
}
}
}
{
Matrix4 local2view(test.getVolume().GetViewProjection().getMultipliedBy(_pivot2World._worldSpace));
if(show_x)
{
SelectionIntersection best;
Line_BestPoint(local2view, &_arrowX.getRawPoints().front(), best);
Triangles_BestPoint(local2view, eClipCullCW, &_arrowHeadX.getRawPoints().front(), &*(_arrowHeadX.getRawPoints().end()-1)+1, best);
selector.addSelectable(best, &_selectableX);
}
if(show_y)
{
SelectionIntersection best;
Line_BestPoint(local2view, &_arrowY.getRawPoints().front(), best);
Triangles_BestPoint(local2view, eClipCullCW, &_arrowHeadY.getRawPoints().front(), &*(_arrowHeadY.getRawPoints().end()-1)+1, best);
selector.addSelectable(best, &_selectableY);
}
if(show_z)
{
SelectionIntersection best;
Line_BestPoint(local2view, &_arrowZ.getRawPoints().front(), best);
Triangles_BestPoint(local2view, eClipCullCW, &_arrowHeadZ.getRawPoints().front(), &*(_arrowHeadZ.getRawPoints().end()-1)+1, best);
selector.addSelectable(best, &_selectableZ);
}
}
// greebo: If any of the above arrows could be selected, select the first in the SelectionPool
if(!selector.empty())
{
selector.begin()->second->setSelected(true);
}
else
{
ISelectable* selectable = nullptr;
if (_translateConstrained.get())
{
// None of the shown arrows (or quad) has been selected, select an axis based on the precedence
Matrix4 local2view(test.getVolume().GetViewProjection().getMultipliedBy(_pivot2World._worldSpace));
// Get the (relative?) distance from the mouse pointer to the manipulator
Vector3 delta = local2view.tCol().getProjected();
// Get the precedence (which axis has the absolute largest value in it)
bool xGreaterY = (fabs(delta.x()) > fabs(delta.y()));
// The precedence has to be interpreted according to which axes are visible
if (show_z) {
// Either XZ or YZ
if (show_y) {
// YZ
selectable = (xGreaterY) ? &_selectableY : &_selectableZ;
}
else {
// XZ
selectable = (xGreaterY) ? &_selectableX : &_selectableZ;
}
}
else {
// XY
selectable = (xGreaterY) ? &_selectableX : &_selectableY;
}
}
else {
// Don't constrain to axis, choose the freemove translator
selectable = &_selectableScreen;
}
// If everything went ok, there is a selectable available, add it
if (selectable)
{
selector.addSelectable(SelectionIntersection(0,0), selectable);
selectable->setSelected(true);
}
}
}
TranslateManipulator::Component* TranslateManipulator::getActiveComponent()
{
if(_selectableX.isSelected())
{
_translateAxis.SetAxis(g_vector3_axis_x);
return &_translateAxis;
}
else if(_selectableY.isSelected())
{
_translateAxis.SetAxis(g_vector3_axis_y);
return &_translateAxis;
}
else if(_selectableZ.isSelected())
{
_translateAxis.SetAxis(g_vector3_axis_z);
return &_translateAxis;
}
else
{
return &_translateFree;
}
}
void TranslateManipulator::setSelected(bool select)
{
_selectableX.setSelected(select);
_selectableY.setSelected(select);
_selectableZ.setSelected(select);
_selectableScreen.setSelected(select);
}
bool TranslateManipulator::isSelected() const
{
return _selectableX.isSelected() || _selectableY.isSelected()
|| _selectableZ.isSelected() || _selectableScreen.isSelected();
}
}
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