canvas pan/zoom, project into canvas using inverse transform, implement eraser (early prototype)

2017-04-09 22:40:38 +01:00
parent 8d35d1f140
commit a82c76ce41
6 changed files with 124 additions and 75 deletions
--- a/engine/canvas.h
+++ b/engine/canvas.h
@@ -13,6 +13,8 @@ class Canvas
    BrushMesh m_mesh;
    bool m_dirty = false;
 public:
+    bool m_erase = false;
+    glm::mat4 m_mvp;
    int m_width;
    int m_height;
    bool m_use_instanced = false;
@@ -36,7 +38,7 @@ public:
    void stroke_draw();
    void stroke_end();
    void stroke_commit();
-    void clear(const glm::vec4& color = { 0, 0, 0, 1 });
+    void clear(const glm::vec4& color = { 1, 1, 1, 1 });
 };

 NS_END