diff options
Diffstat (limited to 'src/core/container.lisp')
| -rw-r--r-- | src/core/container.lisp | 52 |
1 files changed, 51 insertions, 1 deletions
diff --git a/src/core/container.lisp b/src/core/container.lisp index af01ff1..1410310 100644 --- a/src/core/container.lisp +++ b/src/core/container.lisp @@ -4,11 +4,46 @@ (defclass/std container (unit) - ((units :with :a)) + ((units :with :a) + (cached-rect :with) + (left right top bottom :with :std 0 :doc "container's box coordinates.")) (:documentation "Just a list of units. Made into a class so that transformation affine transformations methods can be specialzied on whole groups of units")) +(defmethod (setf closer-mop:slot-value-using-class) + (newval class (container container) slot) + (case (closer-mop:slot-definition-name slot) + ((left right top bottom) + (setf (container-cached-rect container) nil)))) + +(defmethod get-rect ((container container)) + (with-slots (cached-rect left right top bottom) container + (or cached-rect + (setf cached-rect + (list* (vec:vec left bottom 0 1.0) + (vec:vec left top 0 1.0) + (vec:vec right top 0 1.0) + (vec:vec right bottom 0 1.0) + (vec:vec left bottom 0 1.0)))))) + + +(defun point-in-contanier-box-p (c x y) + "Returns T if the ponit X Y is inside the bounds of the container." + (and (<= (container-left c) x (container-right c)) + (<= (container-bottom c) y (container-top c)))) + +(defun visible-in-container-p (unit) + "Returns T if UNIT is VISIBLEP, if it is inside a CONTAINER, if any + of the corners of its bounding rectangle are inside that CONTAINER. + + UNIT must implement the affine protocol." + (when (unit-visiblep unit) + (when-let ((container + (unit-container unit))) + (loop for pt in (get-rect unit) + thereis (point-in-contanier-box-p container (vec:vx pt) (vec:vy pt)))))) + (defmethod drop-unit ((unit unit)) "Removes a unit from its container. Returns T if the unit actually was removed." (when-let (container (unit-container unit)) @@ -30,3 +65,18 @@ necessary." (defmethod cleanup ((container container)) (dolist (u (container-units container)) (cleanup u))) + +(defmethod render ((container container)) + (let ((current + (gl:get* :scissor-box)) + (scale + (application-scale + (app-of-unit container)) + )) + (with-slots (left right top bottom) container + (gl:scissor (* left scale) (* scale bottom) (* scale (- right left)) (* scale (- top bottom))) + (unwind-protect + (dolist (u (container-units container)) + (when (visible-in-container-p u) + (render u))) + (gl:scissor (aref current 0) (aref current 1) (aref current 2) (aref current 3)))))) |