added buffered image for faster animation redraw based on layers - gsl-shell.git - gsl-shell

diff --git a/agg-plot/window-cpp.h b/agg-plot/window-cpp.h
index 99db9163..42abcfc3 100644
--- a/agg-plot/window-cpp.h
+++ b/agg-plot/window-cpp.h

@@ -30,8 +30,13 @@ public:

bmatrix matrix;

- ref() : plot(0), matrix() {};

- ref(plot_type *p) : plot(p), matrix() {};

+ unsigned char *layer_buf;

+ agg::rendering_buffer layer_img;

+

+ ref() : plot(0), matrix(), layer_buf(0) {};

+ ref(plot_type *p) : plot(p), matrix(), layer_buf(0) {};

+

+ ~ref() { if (layer_buf) delete layer_buf; };

static void compose(bmatrix& a, const bmatrix& b);

static int calculate(node *t, const bmatrix& m, int id);

@@ -46,7 +51,7 @@ private:

static ref *ref_lookup (ref::node *p, int slot_id);

ref::node* m_tree;

-

+

public:

window(agg::rgba& bgcol) : canvas_window(bgcol), m_tree(0)

{

@@ -60,6 +65,9 @@ public:

void draw_slot(int slot_id, bool update_req);

void refresh_slot(int slot_id);

+ void save_slot_image(int slot_id);

+ void restore_slot_image(int slot_id);

+

void cleanup_refs(lua_State *L, int window_index)

{

cleanup_tree_rec (L, window_index, m_tree);