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Initial implementation of handles on sources to manipulate in geometry

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view (only resize implemented so far)
This commit is contained in:
brunoherbelin
2020-05-16 12:06:52 +02:00
parent ab75c342f4
commit 20cafa388f
26 changed files with 1623 additions and 379 deletions
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72
PickingVisitor.cpp
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@@ -2,6 +2,7 @@
#include "Log.h"
#include "Primitives.h"
#include "GlmToolkit.h"
#include "Mesh.h"
#include <glm/gtc/type_ptr.hpp>
@@ -17,8 +18,9 @@ PickingVisitor::PickingVisitor(glm::vec2 coordinates) : Visitor(), point_(coordi
void PickingVisitor::visit(Node &n)
{
// use the transform modified during update
modelview_ *= n.transform_;
modelview_ *= n.transform_;
// modelview_ *= transform(n.translation_, n.rotation_, n.scale_);
// Log::Info("Node %d", n.id());
// Log::Info("%s", glm::to_string(modelview_).c_str());
@@ -27,9 +29,9 @@ void PickingVisitor::visit(Node &n)
void PickingVisitor::visit(Group &n)
{
glm::mat4 mv = modelview_;
//Log::Info("Group %d", n.id());
for (NodeSet::iterator node = n.begin(); node != n.end(); node++) {
(*node)->accept(*this);
if ( (*node)->visible_ )
(*node)->accept(*this);
modelview_ = mv;
}
}
@@ -41,33 +43,71 @@ void PickingVisitor::visit(Switch &n)
modelview_ = mv;
}
void PickingVisitor::visit(Animation &n)
{
}
void PickingVisitor::visit(Primitive &n)
{
// TODO: generic visitor for primitive with random shape
}
void PickingVisitor::visit(Surface &n)
{
// Log::Info("Surface %d", n.id());
if (!n.visible_)
return;
// apply inverse transform to the point of interest
glm::vec4 P = glm::inverse(modelview_) * glm::vec4( point_, 0.f, 1.f );
// lower left corner
glm::vec3 LL = glm::vec3( -1.f, -1.f, 0.f );
// up right corner
glm::vec3 UR = glm::vec3( 1.f, 1.f, 0.f );
// if P is inside [LL UR] rectangle:
if ( P.x > LL.x && P.x < UR.x && P.y > LL.y && P.y < UR.y )
// test bounding box: it is an exact fit for a resctangular surface
if ( n.bbox().contains( glm::vec3(P)) )
// add this surface to the nodes picked
nodes_.push_back( std::pair(&n, glm::vec2(P)) );
}
void PickingVisitor::visit(Frame &n)
{
n.border()->accept(*this);
}
void PickingVisitor::visit(Handles &n)
{
if (!n.visible_)
return;
// apply inverse transform to the point of interest
glm::vec4 P = glm::inverse(modelview_) * glm::vec4( point_, 0.f, 1.f );
// get the bounding box of a handle
GlmToolkit::AxisAlignedBoundingBox bb = n.handle()->bbox();
// test picking depending on type of handle
bool picked = false;
if ( n.type() == Handles::RESIZE ) {
// 4 corners
picked = ( bb.translated(glm::vec3(+1.f, +1.f, 0.f)).contains( glm::vec3(P) ) ||
bb.translated(glm::vec3(+1.f, -1.f, 0.f)).contains( glm::vec3(P) ) ||
bb.translated(glm::vec3(-1.f, +1.f, 0.f)).contains( glm::vec3(P) ) ||
bb.translated(glm::vec3(-1.f, -1.f, 0.f)).contains( glm::vec3(P) ) );
}
else if ( n.type() == Handles::RESIZE_H ){
// left & right
picked = ( bb.translated(glm::vec3(+1.f, 0.f, 0.f)).contains( glm::vec3(P) ) ||
bb.translated(glm::vec3(-1.f, 0.f, 0.f)).contains( glm::vec3(P) ) );
}
else if ( n.type() == Handles::RESIZE_V ){
// top & bottom
picked = ( bb.translated(glm::vec3(0.f, +1.f, 0.f)).contains( glm::vec3(P) ) ||
bb.translated(glm::vec3(0.f, -1.f, 0.f)).contains( glm::vec3(P) ) );
}
else if ( n.type() == Handles::ROTATE ){
// TODO Picking Rotation
}
if ( picked )
// add this surface to the nodes picked
nodes_.push_back( std::pair(&n, glm::vec2(P)) );
}
void PickingVisitor::visit(LineSquare &)
{
// apply inverse transform to the point of interest