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tests.lisp
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tests.lisp
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(in-package :raylisp)
;; notional scale: 1 unit = 10cm
(eval-when (:compile-toplevel :load-toplevel :execute)
(let* ((chessboard
(make-instance 'texture-shader
:pigment (make-instance 'checker-pattern
:type :pigment
:map `(,+black+ ,+white+))))
(bright-red
(make-instance 'texture-shader :pigment +red+))
(bright-blue
(make-instance 'texture-shader :pigment +blue+))
(bright-green
(make-instance 'texture-shader :pigment +green+))
(floor
(make-instance 'plane :shader chessboard))
(lamp
(make-instance 'point-light :location (v 0 30 0) :color +white+))
(sun
(make-instance 'solar-light :direction (v 1 1 0) :color +white+))
(view
(make-instance 'pinhole-camera
:location (v 0 18 -30)
:look-at +origin+
:focal-length 4.0))
(floor-view
(make-instance 'pinhole-camera
:location (v 0 0 -30)
:look-at +origin+
:focal-length 4.0))
(top-view
(make-instance 'pinhole-camera
:location (v 0 18 0)
:look-at +origin+
:focal-length 4.0)))
(defparameter *chessboard* chessboard)
(defparameter *bright-red* bright-red)
(defparameter *bright-blue* bright-blue)
(defparameter *bright-green* bright-green)
(defparameter *floor* floor)
(defparameter *lamp* lamp)
(defparameter *sun* sun)
(defparameter *view* view)
(defparameter *floor-view* floor-view)
(defparameter *top-view* top-view)))
(defscene test-test-lab
;; Sanity check.
(:objects
*floor*)
(:lights
*lamp*)
(:camera
*view*))
(defscene test-normal
(:objects
(make-instance 'plane
:shader (make-instance 'texture-shader
:pigment +white+
:ambient 0.3))
(make-instance 'sphere
:location (v -2 1 -0.5)
:shader (make-instance 'texture-shader
:pigment +yellow+
:normal (make-instance 'bump-normal
:height 0.3
:scale 0.2)))
(make-instance 'sphere
:location (v 0.5 1 0)
:shader (make-instance 'texture-shader
:pigment +green+
:normal (make-instance 'wrinkle-normal
:octaves 4
:height 0.3
:scale 0.2)))
;; Bowl
(make-instance 'csg
:type 'difference
:scale (v 2.0 1.0 2.0)
:objects
(list (make-instance 'csg
:type 'intersection
:objects
(list
(make-instance 'sphere
:location (v 2 1 0)
:shader (make-instance 'texture-shader
:pigment +red+))
(make-instance 'plane
:location (v 0 1 0)
:shader (make-instance 'texture-shader
:pigment +red+))))
(make-instance 'sphere
:radius 0.9
:location (v 2 1 0)
:shader (make-instance 'texture-shader
:pigment +red+))))
;; Cheap liquid
(make-instance 'csg
:type 'intersection
:scale (v 2.0 1.0 2.0)
:objects
(list (make-instance 'sphere
:radius 0.91
:location (v 2 1 0))
(make-instance 'plane
:location (v 0 0.8 0)
:shader
(make-instance 'texture-shader
:pigment (v 0.5 0.6 1.0)
:reflection 0.3
:specular 1.0
:roughness 0.5
:diffuse 0.7
:fresnel 0.8
:normal
(make-instance 'ripple-normal
:height 0.3
:scale 0.2))))))
(:background
(make-instance 'sky-sphere-shader
:pigment (make-instance 'noise-pattern
:type :pigment
:map `((0.0 ,+white+)
(1.0 ,+blue+)))))
(:lights
(make-instance 'spotlight
:location (v -10 10 -20)
:point-at (v 1 1 0)
:aperture 0.97))
(:camera
(make-instance 'pinhole-camera
:location (v -5 5 -15)
:look-at (v 1.25 1 0)
:focal-length 6.0)))
(defvar *models*
(merge-pathnames "models/"
(make-pathname :defaults
(truename (asdf:system-definition-pathname
(asdf:find-system :raylisp)))
:name nil
:type nil)))
;;; One-time conversion to create meshes that load fast -- or to test KD-tree
;;; contruction speed, delete the .mesh files. The models can be found at:
;;; http://graphics.stanford.edu/data/3Dscanrep/ -- this assumes that they
;;; are under models/originals/.
(flet ((conv (path name)
(let ((target (merge-pathnames name *models*))
(orig (merge-pathnames path (merge-pathnames "originals/" *models*))))
(unless (probe-file target)
(loop until (probe-file orig)
do (cerror "Retry" "Model missing: ~S~%~
Get it from http://graphics.stanford.edu/data/3Dscanrep/"
orig))
(convert-mesh orig
target
;; The stanford models are quite small, so scale them up!
:scale 50)))))
(conv "bunny/reconstruction/bun_zipper.ply" "stanford-bunny.mesh")
(conv "dragon_recon/dragon_vrip.ply" "stanford-dragon.mesh")
(conv "happy_recon/happy_vrip.ply" "stanford-buddha.mesh"))
(defvar *stanford-bunny* (load-mesh (merge-pathnames "stanford-bunny.mesh" *models*)))
(defvar *stanford-dragon* (load-mesh (merge-pathnames "stanford-dragon.mesh" *models*)))
(defvar *stanford-buddha* (load-mesh (merge-pathnames "stanford-buddha.mesh" *models*)))
(defvar *utah-teapot*
(load-mesh (merge-pathnames "utah-teapot.obj" *models*) :rotate (v (deg -90) 0 0)))
(defscene test-bunny
(:objects
(make-instance 'plane
:shader (make-instance 'texture-shader :pigment +white+))
(make-instance 'model
:mesh *stanford-bunny*
:shader (make-instance 'texture-shader :pigment +white+)
:rotate (v 0.0 -3.0 0.0)
:translate (v 0.0 -2.0 0.0)))
(:lights
(make-instance 'spotlight
:location (v -20 20 -20)
:point-at +origin+))
(:camera
(make-instance 'pinhole-camera
:location (v 0 20 -25)
:look-at (v 2 3 0)
:focal-length 4.0)))
(defscene test-buddha
(:objects
(make-instance 'plane
:shader (make-instance 'texture-shader :pigment +white+))
(make-instance 'model
:mesh *stanford-buddha*
:shader (make-instance 'texture-shader :pigment +white+)
:rotate (v 0 (deg 180) 0)
:translate (v -2.0 -3.0 -4)))
(:lights
(make-instance 'spotlight
:location (v -20 20 -20)
:point-at (v 0 3 0)))
(:camera
(make-instance 'pinhole-camera
:location (v 0 7 -15)
:look-at (v 2 3.9 0)
:focal-length 2.0)))
(defscene test-dragon
(:objects
(flet ((marble (color1 color2 &optional (matrix +identity-matrix+))
(let ((s 0.5))
(make-instance 'marble-pattern
:type :pigment
:scale s
:matrix matrix
:map `((0.0 ,color1)
(0.9 ,color1)
(1.0 ,color2))))))
(make-instance 'plane
:shader (make-instance 'texture-shader
:pigment +white+
:scale (v 6.0 1.0 6.0)
:diffuse 1.0)))
(flet ((dragon (c refl f rou m &optional (r +identity-matrix+))
(make-instance 'model
:mesh *stanford-dragon*
:shader (make-instance 'texture-shader
:specular refl
:diffuse (- 0.9 refl)
:roughness rou
:metallic t
:reflection refl
:pigment c
:fresnel f)
:scale 0.6
:matrix-list (list r
(translate* -2.0 -1.8 0.0)
m
(rotate* 0.0 -0.3 0.0)))))
(list (dragon (v 1.0 0.6 0.45)
0.5 0.6 0.015
(translate* 2.0 0.0 -4.0) (rotate* 0.0 0.4 0.0))
(dragon (v 0.9 0.9 0.65)
0.75 0.5 0.01
(translate* 0.0 0.0 0.0) (rotate* 0.0 -0.1 0.0)))))
(:background
(make-instance 'sky-sphere-shader
:pigment (make-instance 'noise-pattern
:type :pigment
:map `((0.0 ,+white+)
(1.0 ,+blue+)))))
(:lights
(make-instance 'spotlight
:location (v -1 8 -10)
:point-at +origin+
:aperture 0.8)
(make-instance 'point-light
:location (v -10 10 -10)
:fill-light t
:color (v 0.1 0.1 0.1)))
(:camera
(make-instance 'pinhole-camera
:location (v -15 10 -25)
:look-at (v -0.5 1 0)
:focal-length 6.0)))
;;; Generating a mesh patch from an arbitrary function.
(defscene test-mesh-field
(:objects
(make-instance 'model
:mesh (generate-mesh-field (lambda (x z)
(+ (noise3 x 0.0 z)
(sin z)
(sin (+ z x))))
20.0 200 20.0 200
:translate (v -10 0 -10)
:scale (v 1 0.3 1))
:shader (make-instance 'texture-shader :pigment +white+)))
(:lights
*lamp*)
(:camera
(make-instance 'pinhole-camera
:location (v 0 18 -30)
:look-at (v 0 0 -3)
:focal-length 3.0)))
;;; Three copper balls on a checkered marble floor. TILES-PATTERN
;;; gives a
;;;
;;; 121212
;;; 343434
;;; 121212
;;; 343434
;;;
;;; layout to the floor, so no continuities appear between different
;;; marble tiles. :METALLIC in the texture means that highlights and
;;; reflections pick up the color of the material.
(defscene test-metal
(:objects
(flet ((marble (color1 color2 &optional (matrix +identity-matrix+))
(make-instance 'marble-pattern
:type :pigment
:scale 0.5
:matrix matrix
:map `((0.0 ,color1)
(0.9 ,color1)
(1.0 ,color2)))))
(make-instance 'plane
:shader (make-instance 'texture-shader
:pigment (make-instance 'tile-pattern
:type :pigment
:map (list
(marble +black+ +white+ (rotate* 1.0 2.7 0.3))
(marble +white+ +black+ (translate* 1.2 0.5 1.5))
(marble +white+ +black+ (rotate* 0.0 1.0 0.0))
(marble +black+ +white+)))
:scale (v 6.0 1.0 6.0)
:diffuse 1.0)))
(make-instance 'sphere
:radius 300.0
:shader (make-instance 'texture-shader :pigment (v 0.6 0.8 1.0)))
(flet ((ball (p r o)
(make-instance 'sphere
:location (v p 2.0 -2)
:radius 3.0
:shader (make-instance 'texture-shader
:pigment (v 1.0 0.55 0.4)
:diffuse (- 1.0 r)
:reflection r
:brilliance 2.0
:specular r
:roughness o
:metallic t
:fresnel 0.5))))
(list (ball -6 0.5 0.005)
(ball 0.0 0.6 0.004)
(ball 6 0.75 0.0025))))
(:lights
(make-instance 'spotlight
:location (v -10 10 -10)
:point-at (v -3 0 -2)
:aperture 0.8)
(make-instance 'point-light
:fill-light t
:location (v -10 10 -10)
:color (v 0.1 0.1 0.1)))
(:camera
*view*))
(defun triangle-box (min max &rest initargs)
(let (triangles)
(flet ((tri (&rest vertices)
(push (apply #'make-instance 'triangle
:vertices vertices
initargs)
triangles)))
(let* ((min (vec-min min max))
(max (vec-max min max))
;; Low corners clockwise from MIN: c1, c2, c3, c4
(c1 (vec (aref min 0) (aref min 1) (aref min 2)))
(c2 (vec (aref min 0) (aref min 1) (aref max 2)))
(c3 (vec (aref max 0) (aref min 1) (aref max 2)))
(c4 (vec (aref max 0) (aref min 1) (aref min 2)))
;; High corners clockwise from corner above MIN: c5, c6, c7, c8
(c5 (vec (aref min 0) (aref max 1) (aref min 2)))
(c6 (vec (aref min 0) (aref max 1) (aref max 2)))
(c7 (vec (aref max 0) (aref max 1) (aref max 2)))
(c8 (vec (aref max 0) (aref max 1) (aref min 2))))
;; bottom
(tri c1 c2 c3)
(tri c3 c4 c1)
;; front
(tri c1 c5 c8)
(tri c8 c4 c1)
;; left
(tri c1 c5 c6)
(tri c6 c2 c1)
;; right
(tri c3 c7 c8)
(tri c8 c4 c3)
;; back
(tri c2 c6 c7)
(tri c7 c3 c2)
;; top
(tri c5 c6 c7)
(tri c7 c8 c5)))
triangles))
(defscene test-teapot
(:objects
(make-instance 'model
:mesh *utah-teapot*
:shader (make-instance 'texture-shader :pigment +white+))
(make-instance 'model
:mesh *utah-teapot*
:shader (make-instance 'texture-shader :pigment +red+)
:translate (v 0 50 250))
(make-instance 'model
:mesh *utah-teapot*
:shader (make-instance 'texture-shader :pigment +green+)
:translate (v 0 -50 -350)))
(:background
(make-instance 'sky-sphere-shader
:pigment (make-instance 'noise-pattern
:type :pigment
:map `((0.0 ,+white+)
(1.0 ,+blue+)))))
(:lights
(make-instance 'solar-light
:direction (v 2 8 -1)))
(:camera
(make-instance 'pinhole-camera
:look-at (slot-value *utah-teapot* 'min)
:location (v 350 350 900)
:focal-length 5.5)))
(defscene test-triangle
(:objects
(triangle-box (v 1 0 0) (v 2 1 1) :shader *bright-red*
:rotate (v 0 1 0))
(make-instance 'box
:min (v -2 0 0)
:max (v -1 1 1)
:shader *bright-blue*
:rotate (v 0.0 1.0 0.0)))
(:lights
(make-instance 'point-light
:location (v -10 10 -10)))
(:camera
(make-instance 'pinhole-camera
:location (v 2 2 -5))))
(defscene test-pattern-shader
(:objects
(make-instance 'plane
:rotate (v 0.0 (deg 22.5) 0.0)
:shader
(make-instance 'texture-shader
:pigment
(make-instance 'gradient-pattern
:type :pigment
:axis (vec 1.0 0.0 2.0)
:scale 4.0
:map `((0.0 ,+black+)
(0.2 ,+red+)
(0.3 ,+red+)
(0.5 ,+blue+)
(1.0 ,+white+))))))
(:lights
*lamp*)
(:camera
*view*))
(defscene test-pattern-shader-2
(:objects
(make-instance 'plane
:rotate (v 0 (deg 22.5) 0)
:shader
(make-instance 'gradient-pattern
:type :shader
:map `((0.0 ,(make-instance 'texture-shader :pigment +white+))
(1.0 ,(make-instance 'flat-shader :color +white+))))))
(:lights
*lamp*)
(:camera
*view*))
(defscene test-orthogonal
(:objects
*floor*
(make-instance 'sphere
:shader *bright-red*))
(:lights
*lamp*)
(:camera
(make-instance 'orthogonal-camera
:location (v 20 30 -40)
:look-at +origin+)))
(defscene test-panoramic
(:objects
*floor*
(make-instance 'sphere
:radius 2.0
:location (v 0 2 0)
:shader *bright-red*))
(:lights
*lamp*)
(:camera
(make-instance 'panoramic-camera
:location (v 5 3 -4)
:look-at (v 0 2 0))))
(defscene test-cylinder
(:objects
(make-instance 'plane
:location (v 0.0 -8.0 0.0)
:shader *chessboard*)
(make-instance 'cylinder
:axis +x+
:translate (v 0.0 -5.0 0.0)
:shader (make-instance 'texture-shader :pigment +yellow+))
(make-instance 'cylinder
:start (v 0 5 -4)
:start-cap t
:start-cap-shader *bright-green*
:shader (make-instance 'texture-shader :pigment +purple+))
(make-instance 'cylinder
:start (v 4 0 0)
:end (v 4 -2 10)
:end-cap t
:end-cap-shader (make-instance 'texture-shader :pigment +white+)
:radius 1.5
:shader *bright-red*)
(make-instance 'cylinder
:start (v -6 0 0)
:end (v -6 -2 10)
:start-cap t
:start-cap-shader (make-instance 'texture-shader :pigment +white+)
:radius 1.5
:shader *bright-red*)
(make-instance 'cylinder
:start (v -3 0 0)
:end (v 0 -4 10)
:radius 0.5
:shader *bright-red*)
(make-instance 'sphere
:radius 1.5
:location (v -3 0 0)
:shader *bright-green*)
(make-instance 'sphere
:radius 1.5
:location (v 0 -4 10)
:shader *bright-blue*))
(:lights
*lamp*
(make-instance 'point-light
:location (v -5 10 -10)))
(:camera
(make-instance 'pinhole-camera
:location (v 5.0 5.0 -9.0)
:look-at +origin+)))
(defscene test-light-groups
(:objects
(make-instance 'plane
:light-group '(:left)
:shader (make-instance 'texture-shader :pigment +white+))
(make-instance 'sphere
:light-group :left
:location (v -3.0 1.0 0.0)
:shader *bright-red*)
(make-instance 'sphere
:light-group '(:left :right)
:location (v 0.0 1.0 0.0)
:shader *bright-red*)
(make-instance 'sphere
:light-group :right
:location (v 3.0 1.0 0.0)
:shader *bright-red*))
(:lights
(make-instance 'point-light
:location (v -30 10 10)
:light-group :left)
(make-instance 'point-light
:location (v 30 10 10)
:light-group :right))
(:camera
*view*))
(defscene test-marble
(:objects
*floor*
(make-instance 'sphere
:radius 4.0
:location (v 0.0 4.0 -2.0)
:shader (make-instance 'texture-shader
:rotate (v 0.0 0.0 1.0)
:pigment (make-instance 'marble-pattern
:type :pigment
:map `((0.0 ,+black+)
(1.0 ,(vec 0.7 0.7 0.7)))))))
(:lights
(make-instance 'line-light
:samples 28
:location (v -10 10 -10)))
(:camera
*view*))
(defscene test-wood
(:objects
*floor*
(make-instance 'box
:scale 3.0
:translate (v 0 3 -2)
:shader (make-instance 'texture-shader
:scale 0.2
:pigment (make-instance 'wood-pattern
:type :pigment
:map `((0.0 ,+black+)
(1.0 ,(vec 0.6 0.3 0.25)))))))
(:lights
(make-instance 'point-light
:location (v -10 10 -10)))
(:camera
*view*))
(defscene test-boxes-1
(:objects
*floor*
(loop for i from -5 upto 10
collect (make-instance 'box
:min +origin+
:max (vec 1.0 1.0 1.0)
:shader *bright-red*
:matrix-list (list
(rotate* (- (random +pi+)) 0.0 (random +pi+))
(rotate* 0.0 (random +pi+) 0.0)
(translate* (* i 2.0) 1.0 (* i 2.0))))))
(:lights
(make-instance 'point-light
:location (vec -10.0 30.0 -10.0)))
(:camera
*view*))
(defscene test-boxes-2
(:objects
*floor*
(let ((box1 (make-instance 'box
:min (vec -2.0 0.0 0.0)
:max (vec -1.0 1.0 1.0)
:shader *bright-red*))
(box2 (make-instance 'box
:min (vec 1.0 0.0 0.0)
:max (vec 2.0 1.0 1.0)
:shader *bright-blue*)))
(flet ((mark (box)
(list (make-instance 'sphere
:radius 0.2
:location (min-of box)
:shader (make-instance 'texture-shader :pigment +green+))
(make-instance 'sphere
:radius 0.2
:location (max-of box)
:shader (make-instance 'texture-shader :pigment +green+)))))
(append (list box1 box2)
(mark box1)
(mark box2)))))
(:lights
(make-instance 'point-light
:location (vec -10.0 30.0 -10.0)))
(:camera
*view*))
(defscene test-boxes-3
(:objects
(make-instance 'csg
:type 'difference
:objects (list (make-instance 'box
:min (vec -1.0 0.0 -1.0)
:max (vec 1.0 2.0 1.0)
:shader (make-instance 'texture-shader :pigment +white+))
(make-instance 'box
:min (vec -0.8 0.2 -1.1)
:max (vec 0.8 1.8 1.1)
:shader (make-instance 'texture-shader :pigment +yellow+))
(make-instance 'box
:min (vec -1.1 0.2 -0.8)
:max (vec 1.1 1.8 0.8)
:shader (make-instance 'texture-shader :pigment +blue+))
(make-instance 'box
:min (vec -0.8 -0.1 -0.8)
:max (vec 0.8 2.1 0.8)
:shader (make-instance 'texture-shader :pigment +red+)))))
(:lights
(make-instance 'point-light
:location (vec -10.0 30.0 -20.0)))
(:camera
(make-instance 'pinhole-camera
:look-at +origin+
:location (vec/ (vec -3.5 5.0 -5.0) 2.0))))
(defscene test-kd-split-1
(:objects
(loop for j from -10 upto 10
append (loop for i from -10 upto 10
collect (make-instance 'sphere
:radius 1.0
:translate (v (* 0.5 i) 0 (* 0.5 j))
:shader *bright-red*))))
(:lights
*lamp*)
(:camera
*view*))
(defscene test-kd-split-2
(:objects
(loop for j from -10 upto 10
append (loop for i from -10 upto 10
collect (make-instance 'sphere
:radius 1.0
:translate (v (* 2.5 i) 0 (* 2.5 j))
:shader *bright-red*))))
(:lights
*lamp*)
(:camera
*view*))
(defscene test-spheres
;; All in a grid.
(:objects
*floor*
(loop for i from -3 upto 3
collect (make-instance 'sphere
:radius 1.0
:translate (v (* 3 i) 1 0)
:shader *bright-red*))
(loop for i from -3 upto 3
collect (make-instance 'sphere
:radius 0.5
:location (v (* 3 i) 3 0)
:shader *bright-red*))
(loop for i from -3 upto 3
collect (make-instance 'sphere
:radius 0.5
:translate (v (* 3 i) 5 0)
:shader *bright-red*))
(make-instance 'sphere
:scale (v 5.0 0.5 0.5)
:translate (v 0 2 -5)
:shader *bright-blue*))
(:lights
*lamp*)
(:camera
*view*))
(defscene test-sphere-intersection
;; No wierd shadows on the floor, etc.
(:objects
*floor*
(make-instance 'csg
:type 'intersection
:objects (list (make-instance 'sphere
:location (v 1.5 -0.1 0)
:radius 4.0
:shader *bright-red*)
(make-instance 'sphere
:location (v -1.5 -0.1 0)
:radius 4.0
:shader *bright-blue*))))
(:lights
*lamp*)
(:camera
*view*))
(defscene test-plane-intersection
(:objects
(make-instance
'csg
:type 'intersection
:objects
(list
(make-instance 'plane
:normal (v 0 0 -1)
:location (v 0 0 1)
:shader *chessboard*)
(make-instance 'plane
:normal (v 1 1 0)
:location (v 1 0 0)
:shader *bright-red*)
(make-instance 'plane
:normal (v -1 1 0)
:location (v -1 0 0)
:shader *bright-red*)
*floor*)))
(:lights
*lamp*)
(:camera
*view*))
(defscene test-1
(:objects
(make-instance 'sphere
:location (v 0 -1 0)
:scale (v 3 0.5 0.5)
:shader
(make-instance 'texture-shader
:pigment (make-instance 'gradient-pattern
:type :pigment
:axis +x+
:map `((0.0 ,+blue+)
(1.0 ,+green+)))))
(make-instance 'sphere
:location (v 0 0 0)
:scale (v 3 0.5 0.5)
:shader
(make-instance 'texture-shader
:pigment (make-instance 'gradient-pattern
:type :pigment
:smooth t
:rotate (v 0 (deg 90) 0)
:map `((0.0 ,+black+)
(1.0 ,+white+)))))
(make-instance 'sphere
:location (v 0 1 0)
:scale (v 3 0.5 0.5)
:shader
(make-instance 'texture-shader
:pigment (make-instance 'gradient-pattern
:type :pigment
:map `((0.0 ,+red+)
(1.0 ,+yellow+))))))
(:lights
(make-instance 'point-light
:location (v 10 5 -20)))
(:ambient-light (v 0.1 0.1 0.1))
(:camera
(make-instance 'pinhole-camera
:location (v 0 3 -20)
:look-at +origin+
:focal-length 4.0)))
(defscene test-2
(:objects
(flet ((glass (ior)
(make-instance 'texture-shader
:transmit 0.8
:reflection 0.1
:ior ior
:specular 0.8
:roughness 0.01
:diffuse 0.2
:ambient 0
:pigment (v 0.1 0.5 0.5))))
(list
(make-instance 'sphere
:location (v -2 0.6 0)
:shader (glass 1.4))
(make-instance 'sphere
:location (v 0 0 0)
:shader (glass 1.6))
(make-instance 'sphere
:location (v 2 0.9 0)
:shader (glass 1.02))
(make-instance 'sphere
:location (v -1 1.6 -2)
:shader (glass 1.0))
(make-instance 'sphere
:location (v 1 0.3 -2.5)
:shader (glass 1.5))))
(make-instance 'plane
:location (v 0 -1 0)
:shader *chessboard*))
(:lights
(make-instance 'point-light
:location (v -30 30 -30)))
(:background
(make-instance 'sky-sphere-shader
:pigment (make-instance 'noise-pattern
:type :pigment
:map `((0.0 ,+white+)
(1.0 ,+blue+)))))
(:ambient-light +white+)
(:adaptive-limit 0.001)
(:depth-limit 36)
(:camera
(make-instance 'pinhole-camera
:location (v 3 2.5 -15)
:look-at +origin+
:focal-length 5.0)))
(defscene test-3
(:objects
(make-instance
'csg
:type 'intersection
:objects (list
(make-instance 'sphere
:location (v -0.5 0 0)
:shader
(make-instance 'texture-shader :pigment +red+))
(make-instance 'sphere
:location (v 0.5 0 0)
:shader
(make-instance 'texture-shader
:pigment +blue+))
(make-instance 'sphere
:location (v 0 -0.1 0)
:shader
(make-instance 'texture-shader
:pigment +green+)))))
(:lights
(make-instance 'solar-light :direction +y+))
(:ambient-light +white+)
(:adaptive-limit 0.01)
(:depth-limit 5)
(:camera
(make-instance 'pinhole-camera
:location (v 0 1.5 -10)
:look-at +origin+
:focal-length 3.0)))
(defscene test-3.1
(:objects
(make-instance
'csg
:type 'intersection
:objects (list
(make-instance 'sphere
:location (v -0.5 0 0)
:shader
(make-instance 'texture-shader :pigment +red+))
(make-instance 'sphere
:location (v 0.5 0 0)
:shader
(make-instance 'texture-shader
:pigment +blue+)))))
(:lights
(make-instance 'solar-light :direction +y+))
(:ambient-light +white+)
(:adaptive-limit 0.01)
(:depth-limit 5)
(:camera
(make-instance 'pinhole-camera
:location (v 0 1.5 -10)
:look-at +origin+
:focal-length 3.0)))
(defscene test-4
(:objects
(make-instance 'csg
:type 'difference
:objects
(list
(make-instance 'sphere
:shader
(make-instance 'texture-shader :pigment +red+))
(make-instance 'sphere
:location (v 0 1 0)
:shader
(make-instance 'texture-shader
:pigment +blue+))
(make-instance 'sphere
:location (v 1 0 0)
:shader
(make-instance 'texture-shader
:pigment +green+)))))
(:lights
(make-instance 'solar-light :direction (v 1 1 0.5)))
(:ambient-light +white+)
(:adaptive-limit 0.01)
(:depth-limit 5)
(:camera
(make-instance 'pinhole-camera
:location (v 8 6.5 -2)
:look-at +origin+
:focal-length 3.0)))
(defscene test-5
(:objects
#+nil
(list
(make-instance 'sphere
:radius 1.0
:translate (v 1 0 0)
:shader (make-instance 'texture-shader :pigment +red+))
(make-instance 'sphere
:radius 1.0
:translate (v 0 1 0)
:shader (make-instance 'texture-shader :pigment +green+))
(make-instance 'sphere
:radius 1.0
:translate (v 0 0 1)
:shader (make-instance 'texture-shader :pigment +blue+)))
(make-instance 'plane
:normal (v -0.5 1 0)
:shader (make-instance 'texture-shader :pigment +white+))
#+nil
(loop for i from -100 upto 100
collect (make-instance 'sphere
:radius 0.5
:translate (v 0 0 i)
:shader (make-instance 'texture-shader :pigment +purple+)))
(make-instance
'csg
:type 'intersection
:objects
(list
(make-instance 'plane
:normal (v 0 1 0)
:location (v 0 -1 0)
:shader (make-instance 'texture-shader :pigment +yellow+))
(make-instance 'plane