Merge pull request #28 from Thales1330/wip/generic-controllers

Wip generic controllers. Chart view implementation required, creating new branch....

1 files changed, 38 insertions, 0 deletions

diff --git a/Project/Camera.cpp b/Project/Camera.cpp
new file mode 100644
index 0000000..248a835
--- /dev/null
+++ b/Project/Camera.cpp
@@ -0,0 +1,38 @@
+#include "Camera.h"
+
+Camera::Camera()
+{
+    m_translation = wxPoint2DDouble(0, 0);
+    m_scale = 1.0;
+}
+
+Camera::~Camera() {}
+wxPoint2DDouble Camera::ScreenToWorld(wxPoint2DDouble screenCoords) const
+{
+    return wxPoint2DDouble(
+        screenCoords.m_x / m_scale - m_translation.m_x, screenCoords.m_y / m_scale - m_translation.m_y);
+}
+
+void Camera::SetTranslation(wxPoint2DDouble screenPoint)
+{
+    m_translation = screenPoint / m_scale - m_translationStartPt;
+}
+
+void Camera::SetScale(wxPoint2DDouble screenPoint, double delta)
+{
+    m_translation -= screenPoint * (1.0 - m_scale) / m_scale;
+
+    m_scale += delta;
+
+    // Limits: 5% - 300%
+    if(m_scale < m_zoomMin) m_scale = m_zoomMin;
+    if(m_scale > m_zoomMax) m_scale = m_zoomMax;
+
+    m_translation += screenPoint * (1.0 - m_scale) / m_scale;
+}
+
+wxPoint2DDouble Camera::GetMousePosition(bool worldCoords) const
+{
+    if(worldCoords) return ScreenToWorld(m_mousePosition);
+    return m_mousePosition;
+}
\ No newline at end of file