Adding license

[fstl] / src / canvas.cpp

diff --git a/src/canvas.cpp b/src/canvas.cpp
index 39081b07554366626e61bf7185117f5f61994e32..4c31c6c8896efab5eeb25986d64a6fe782648848 100644 (file)
--- a/src/canvas.cpp
+++ b/src/canvas.cpp
@@ -10,7 +10,7 @@
 
 Canvas::Canvas(const QGLFormat& format, QWidget *parent)
     : QGLWidget(format, parent), mesh(NULL),
-      scale(1), tilt(90), yaw(0)
+      scale(1), tilt(90), yaw(0), status(" ")
 {
     // Nothing to do here
 }
@@ -35,6 +35,12 @@ void Canvas::load_mesh(Mesh* m)
     delete m;
 }
 
+void Canvas::set_status(const QString &s)
+{
+    status = s;
+    update();
+}
+
 void Canvas::initializeGL()
 {
     mesh_shader.addShaderFromSourceFile(QGLShader::Vertex, ":/gl/mesh.vert");
@@ -42,19 +48,27 @@ void Canvas::initializeGL()
     mesh_shader.link();
 
     backdrop = new Backdrop();
-
-    glClearColor(0.0, 0.0, 0.0, 0.0);
-    glEnable(GL_DEPTH_TEST);
 }
 
-void Canvas::paintGL()
+void Canvas::paintEvent(QPaintEvent *event)
 {
+    Q_UNUSED(event);
+
+    glClearColor(0.0, 0.0, 0.0, 0.0);
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+    glEnable(GL_DEPTH_TEST);
 
     backdrop->draw();
     if (mesh)  draw_mesh();
+
+    if (status.isNull())    return;
+
+    QPainter painter(this);
+    painter.setRenderHint(QPainter::Antialiasing);
+    painter.drawText(10, height() - 10, status);
 }
 
+
 void Canvas::draw_mesh()
 {
     mesh_shader.bind();
@@ -94,11 +108,11 @@ QMatrix4x4 Canvas::view_matrix() const
     QMatrix4x4 m;
     if (width() > height())
     {
-        m.scale(height() / float(width()), 1, 0.5);
+        m.scale(-height() / float(width()), 1, 0.5);
     }
     else
     {
-        m.scale(1, width() / float(height()), 0.5);
+        m.scale(-1, width() / float(height()), 0.5);
     }
     return m;
 }
@@ -126,7 +140,7 @@ void Canvas::mouseMoveEvent(QMouseEvent* event)
     {
         auto p = event->pos();
         auto d = p - mouse_pos;
-        yaw = fmod(yaw + d.x(), 360);
+        yaw = fmod(yaw - d.x(), 360);
         tilt = fmax(0, fmin(180, tilt - d.y()));
         mouse_pos = p;
         update();