Ajout nouveaux control sur interface Qt

double click sur pixel -> chgt de centre de rotation
shift x,y ou z -> align sur l'axe

Apps/Tuto/tuto5.cpp

@@ -196,7 +196,7 @@ void MyQT::cb_initGL()
 
 
 	// timer example for animation
-	m_timer = new QTimer( m_glWidget );
+	m_timer = new QTimer( this );
 	connect( m_timer, SIGNAL(timeout()), SLOT(animate()) );
 }
 

include/Utils/qtgl.h

@@ -91,8 +91,17 @@ protected:
 
 	int m_state_modifier;
 
+	/**
+	 * met a jour la matrice modelview
+	 */
 	void recalcModelView();
 
+	/**
+	 * recalcul le quaternion ainsi que le deplacement courant
+	 * pour un nouveau centre de rotation
+	 */
+	void changeCenterOfRotation(const glm::vec3& newCenter);
+
 public:
 	void setParamObject(float width, float* pos);
 
@@ -109,6 +118,8 @@ public:
 
 	void mouseClickEvent(QMouseEvent* event);
 
+	void mouseDoubleClickEvent(QMouseEvent* event);
+
 	void mouseMoveEvent(QMouseEvent* event);
 
 	void keyPressEvent(QKeyEvent* event);

include/Utils/trackball.h

@@ -64,8 +64,7 @@ namespace Utils
  * The resulting rotation is returned as a quaternion rotation in the
  * first paramater.
  */
-void
-trackball(float q[4], float p1x, float p1y, float p2x, float p2y);
+void trackball(float q[4], float p1x, float p1y, float p2x, float p2y);
 
 /*
  * Given two quaternions, add them together to get a third quaternion.
@@ -75,26 +74,25 @@ trackball(float q[4], float p1x, float p1y, float p2x, float p2y);
  * rotation, the second and third the total rotation (which will be
  * over-written with the resulting new total rotation).
  */
-void
-add_quats(float *q1, float *q2, float *dest);
+void add_quats(float *q1, float *q2, float *dest);
 
 /*
  * A useful function, builds a rotation matrix in Matrix based on
  * given quaternion.
  */
-void
-build_rotmatrix(float m[4][4], float q[4]);
+void build_rotmatrix(float m[4][4], float q[4]);
 
 
 void build_rotmatrixgl3(glm::mat4& m, float q[4]);
 
+void matrix_to_quat( float* q, const glm::mat4& m);
+
 /*
  * This function computes a quaternion based on an axis (defined by
  * the given vector) and an angle about which to rotate.  The angle is
  * expressed in radians.  The result is put into the third argument.
  */
-void
-axis_to_quat(float a[3], float phi, float q[4]);
+void axis_to_quat(float a[3], float phi, float q[4]);
 
 } //namespace Utils
 

src/Utils/qtgl.cpp

@@ -28,6 +28,7 @@
 #include "Utils/trackball.h"
 
 #include "Utils/qtSimple.h"
+#include "glm/gtc/type_precision.hpp"
 
 namespace CGoGN
 {
@@ -96,33 +97,73 @@ QSize GLWidget::sizeHint() const
 
 void GLWidget::recalcModelView()
 {
+	m_cbs->modelViewMatrix()= glm::mat4(1.0f);
+
+	// positionne l'objet / mvt souris
+	oglTranslate(m_cbs->trans_x(), m_cbs->trans_y(), m_cbs->trans_z());
+
+	// tourne l'objet / mvt souris
 	glm::mat4 m;
+	build_rotmatrixgl3(m, m_cbs->curquat());
+	// update matrice
+	m_cbs->modelViewMatrix() *= m;
 
+	// ajout transformation in screen
+	m_cbs->modelViewMatrix()*= m_cbs->transfoMatrix();
+
+	// transfo pour que l'objet soit centre et a la bonne taille
+	oglScale(m_obj_sc, m_obj_sc, m_obj_sc);
+	oglTranslate(m_obj_pos[0], m_obj_pos[1], m_obj_pos[2]);
+
+	newModel = 0;
+
+	if (m_cbs)
+		m_cbs->cb_updateMatrix();
+
+}
+
+void GLWidget::changeCenterOfRotation(const glm::vec3& newCenter)
+{
 	oglPushModelViewMatrix();
 
+	m_cbs->modelViewMatrix()= glm::mat4(1.0f);
+
 	// positionne l'objet / mvt souris
 	oglTranslate(m_cbs->trans_x(), m_cbs->trans_y(), m_cbs->trans_z());
 
 	// tourne l'objet / mvt souris
+	glm::mat4 m;
 	build_rotmatrixgl3(m, m_cbs->curquat());
 	// update matrice
 	m_cbs->modelViewMatrix() *= m;
 
+
+	// ajout transformation in screen
+	m_cbs->modelViewMatrix()*= m_cbs->transfoMatrix();
+
 	// transfo pour que l'objet soit centre et a la bonne taille
 	oglScale(m_obj_sc, m_obj_sc, m_obj_sc);
 	oglTranslate(m_obj_pos[0], m_obj_pos[1], m_obj_pos[2]);
 
-	// ajout transformation in screen
-	m_cbs->modelViewMatrix()*= m_cbs->transfoMatrix();
 
-	newModel = 0;
+	oglTranslate(newCenter[0], newCenter[1], newCenter[2]);
+	oglScale(1.0f/m_obj_sc, 1.0f/m_obj_sc, 1.0f/m_obj_sc);
 
-	if (m_cbs)
-		m_cbs->cb_updateMatrix();
+	m = glm::inverse(m_cbs->transfoMatrix());
+	m_cbs->modelViewMatrix()*= m;
+
+	matrix_to_quat( m_cbs->curquat(), m_cbs->modelViewMatrix());
+
+	m_cbs->trans_x() = m_cbs->modelViewMatrix()[3][0];
+	m_cbs->trans_y() = m_cbs->modelViewMatrix()[3][1];
+	m_cbs->trans_z() = m_cbs->modelViewMatrix()[3][2];
 
 	oglPopModelViewMatrix();
+
+	m_obj_pos = glm::vec3(-newCenter[0],-newCenter[1],-newCenter[2]);
 }
 
+
 void GLWidget::initializeGL()
 {
 	glEnable(GL_DEPTH_TEST);
@@ -175,10 +216,31 @@ void GLWidget::mouseReleaseEvent(QMouseEvent* event)
 
 void GLWidget::mouseClickEvent(QMouseEvent* event)
 {
+
 	if (m_cbs)
 		m_cbs->cb_mouseClick(event->button(), event->x(), getHeight() - event->y());
 }
 
+void GLWidget::mouseDoubleClickEvent(QMouseEvent* event)
+{
+	if (event->button()==1)
+	{
+		GLint x = event->x();
+		GLint y = getHeight() - event->y();
+		GLfloat depth;
+		glReadPixels(x, y, 1, 1, GL_DEPTH_COMPONENT, GL_FLOAT, &depth);
+		if (depth < 1.0f)
+		{
+			glm::i32vec4 viewport;
+			glGetIntegerv(GL_VIEWPORT, &(viewport[0]));
+			glm::vec3 win(x, y, depth);
+			glm::vec3 P = glm::unProject(win, m_cbs->modelViewMatrix(), m_cbs->projectionMatrix(), viewport);
+			changeCenterOfRotation(P);
+		}
+	}
+}
+
+
 void GLWidget::mouseMoveEvent(QMouseEvent* event)
 {
 	// move object only if no special keys pressed
@@ -265,8 +327,34 @@ void GLWidget::keyReleaseEvent(QKeyEvent *event)
 	QWidget::keyReleaseEvent(event);
 
 	m_state_modifier = event->modifiers();
-
     int k = event->key();
+
+    // align on axis
+	if ((k=='Z') && (event->modifiers() & Qt::ShiftModifier))
+	{
+	    float Z[3]={0.0f,0.0f,1.0f};
+		axis_to_quat(Z,0.0f,m_cbs->curquat());
+		newModel=1;
+		updateGL();
+	}
+
+	if ((k=='Y') && (event->modifiers() & Qt::ShiftModifier))
+	{
+		float X[3]={1.0f,0.0f,0.0f};
+		axis_to_quat(X,M_PI/2.0f,m_cbs->curquat());
+		newModel=1;
+		updateGL();
+	}
+
+	if ((k=='X') && (event->modifiers() & Qt::ShiftModifier))
+	{
+		float Y[3]={0.0f,1.0f,0.0f};
+		axis_to_quat(Y,-M_PI/2.0f,m_cbs->curquat());
+		newModel=1;
+		updateGL();
+	}
+
+
     if ( (k >= 65) && (k <= 91) && (event->modifiers() != Qt::ShiftModifier) )
     	k += 32;
 

src/Utils/trackball.cpp

@@ -389,6 +389,45 @@ void build_rotmatrixgl3(glm::mat4& m, float q[4])
     m[3][3] = 1.0;
 }
 
+
+void matrix_to_quat( float* q, const glm::mat4& m)
+{
+	double tr = m[0][0] + m[1][1] + m[2][2];
+
+	if (tr > 0.0)
+	{
+		double S = sqrt(tr+1.0) * 2.0; // S=4*q[3]
+		q[3] = 0.25 * S;
+		q[0] = (m[2][1] - m[1][2]) / S;
+		q[1] = (m[0][2] - m[2][0]) / S;
+		q[2] = (m[1][0] - m[0][1]) / S;
+	}
+	else if ((m[0][0] > m[1][1])&(m[0][0] > m[2][2]))
+	{
+		double S = sqrt(1.0f + m[0][0] - m[1][1] - m[2][2]) * 2.0; // S=4*q[0]
+		q[3] = (m[2][1] - m[1][2]) / S;
+		q[0] = 0.25 * S;
+		q[1] = (m[0][1] + m[1][0]) / S;
+		q[2] = (m[0][2] + m[2][0]) / S;
+	}
+	else if (m[1][1] > m[2][2])
+	{
+		double S = sqrt(1.0 + m[1][1] - m[0][0] - m[2][2]) * 2.0; // S=4*q[1]
+		q[3] = (m[0][2] - m[2][0]) / S;
+		q[0] = (m[0][1] + m[1][0]) / S;
+		q[1] = 0.25 * S;
+		q[2] = (m[1][2] + m[2][1]) / S;
+	}
+	else
+	{
+		double S = sqrt(1.0 + m[2][2] - m[0][0] - m[1][1]) * 2.0; // S=4*q[2]
+		q[3] = (m[1][0] - m[0][1]) / S;
+		q[0] = (m[0][2] + m[2][0]) / S;
+		q[1] = (m[1][2] + m[2][1]) / S;
+		q[2] = 0.25 * S;
+	}
+}
+
 } //namespace Utils
 
 } //namespace CGoGN