ba3d + fct valid()

GUI/ba3d/model/object.cpp

@@ -107,7 +107,7 @@ const Geometry& Object::geo()
 
 void Object::draw(Canvas& canvas)
 {
-    if (isNull)
+    if (!valid())
         return;
 
     canvas.draw(color(), matrix(), geo());

GUI/ba3d/model/object.h

@@ -43,6 +43,7 @@ public:
     void addExtrinsicRotation(F3 turn, F3 scale, F3& rotate, F3 rotateExtrinsic, F3& translate);
     void setColor(QColor color) { m_color = color; }
 
+    bool valid() const { return !isNull; }
     const Geometry& geo();
     const QMatrix4x4& matrix() const { return m_matrix; }