Episode 31: Tweening Part 3
author |
Steve Losh <steve@stevelosh.com> |
date |
Fri, 01 Jul 2016 14:41:43 +0000 |
parents |
783609c42ef0 |
children |
12c6ece1710f |
(in-package #:coding-math.2d.demo)
;;;; Config
(defparameter *width* 600)
(defparameter *height* 400)
(defparameter *center-x* (/ *width* 2))
(defparameter *center-y* (/ *height* 2))
(defvar *shift* nil)
(defvar *control* nil)
(defvar *command* nil)
(defvar *option* nil)
;;;; Utils
(defmacro with-setup (&body body)
`(with-fps
(background (gray 1))
,@body))
;;;; Sketch
(defun draw-particle (p)
(circle (particle-x p) (particle-y p) (particle-radius p)))
(defun draw-line (p1 p2)
(with-vecs ((x1 y1) p1 (x2 y2) p2)
(line x1 y1 x2 y2)))
(defun draw-circle (p &optional (radius 5))
(if (listp p)
(circle (getf p :x) (getf p :y) (or (getf p :radius) radius))
(circle (vec-x p) (vec-y p) radius)))
(defun draw-square (p radius)
(rect (- (vec-x p) radius)
(- (vec-y p) radius)
(* 2 radius)
(* 2 radius)))
(defun draw-point (p)
(point (vec-x p) (vec-y p)))
(defun oob-p (p &optional (r 0.0))
(or (outsidep (- 0 r) (+ *width* r) (vec-x p))
(outsidep (- 0 r) (+ *height* r) (vec-y p))))
(defmacro map-static (function-symbol &rest arguments)
`(progn
,@(loop :for arg :in arguments :collect `(,function-symbol ,arg))))
(defun graph-tween (tweening-function)
(graph-function (curry tweening-function 0.0 1.0 1.0)
:fn-start 0.0 :fn-end 1.0
:fn-min 0.0 :fn-max 1.0
:graph-start 0 :graph-end *width*
:graph-min *height* :graph-max 0))
(defsketch cm
((width *width*) (height *height*) (y-axis :down) (title "Coding Math 2D")
(mouse (make-vec 0 0))
;; Data
(current (make-vec 100 100))
;; Pens
(particle-pen (make-pen :fill (gray 0.9) :stroke (gray 0.4)))
(line-pen (make-pen :curve-steps 40 :stroke (gray 0.7)))
(black-function-pen (make-pen :curve-steps 20 :stroke (rgb 0 0 0) :weight 1))
(red-function-pen (make-pen :curve-steps 40 :stroke (rgb 0.8 0 0) :weight 1))
(green-function-pen (make-pen :curve-steps 40 :stroke (rgb 0 0.8 0) :weight 1))
(blue-function-pen (make-pen :curve-steps 40 :stroke (rgb 0 0 0.8) :weight 1))
)
(with-setup
;;
(in-context
(draw-axes *width* *height*)
(with-pen black-function-pen
(graph-tween #'tween-linear))
(with-pen red-function-pen
(map-static graph-tween
#'tween-quadratic-in
#'tween-cubic-in
#'tween-quartic-in
#'tween-quintic-in))
(with-pen green-function-pen
(map-static graph-tween
#'tween-quadratic-out
#'tween-cubic-out
#'tween-quartic-out
#'tween-quintic-out))
(with-pen blue-function-pen
(map-static graph-tween
#'tween-quadratic-inout
#'tween-cubic-inout
#'tween-quartic-inout
#'tween-quintic-inout))
(update-tweens!)
(with-pen particle-pen
(draw-circle current)))
;;
)
)
;;;; Mouse
(defun mousemove (instance x y)
(with-slots (mouse) instance
(setf mouse (make-vec x (- *height* y)))
;;
;;
)
)
(defun draw-time ()
(text (format nil "~d" (get-internal-real-time))
300 300))
(defun mousedown-left (instance x y)
(declare (ignorable instance x y))
(with-slots (current) instance
(tween-places!
(#'tween-quadratic-inout 10.0
:callback-progress #'draw-time)
(vec-x current) x
(vec-y current) y)))
(defun mousedown-right (instance x y)
(declare (ignorable instance x y))
)
(defun mouseup-left (instance x y)
(declare (ignorable instance x y))
)
(defun mouseup-right (instance x y)
(declare (ignorable instance x y))
)
(defmethod kit.sdl2:mousemotion-event ((window cm) ts b x y xrel yrel)
(declare (ignore ts b xrel yrel))
(mousemove window x y))
(defmethod kit.sdl2:mousebutton-event ((window cm) state ts button x y)
(declare (ignore ts))
(funcall (case state
(:mousebuttondown
(case button
(1 #'mousedown-left)
(3 #'mousedown-right)))
(:mousebuttonup
(case button
(1 #'mouseup-left)
(3 #'mouseup-right))))
window x y))
;;;; Keyboard
(defun keydown (instance scancode)
(declare (ignorable instance))
(scancode-case scancode
(:scancode-space (sketch::prepare instance))
(:scancode-lshift (setf *shift* t))
(:scancode-lctrl (setf *control* t))
(:scancode-lgui (setf *command* t))
(:scancode-lalt (setf *option* t))
;;
;;
))
(defun keyup (instance scancode)
(declare (ignorable instance))
(scancode-case scancode
(:scancode-lshift (setf *shift* nil))
(:scancode-lctrl (setf *control* nil))
(:scancode-lgui (setf *command* nil))
(:scancode-lalt (setf *option* nil))
(:scancode-space nil)))
(defmethod kit.sdl2:keyboard-event ((instance cm) state timestamp repeatp keysym)
(declare (ignore timestamp repeatp))
(cond
((eql state :keyup) (keyup instance (sdl2:scancode-value keysym)))
((eql state :keydown) (keydown instance (sdl2:scancode-value keysym)))
(t nil)))
;;;; Run
; (defparameter *demo* (make-instance 'cm))