97 lines
2.9 KiB
Scheme
97 lines
2.9 KiB
Scheme
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(require scheme/class)
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(define insect-view%
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(class object%
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(init-field
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(id 0)
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(from (vector 0 0 0))
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(type 'none))
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(field
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(to (vector 0 0 0))
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(from-dir (vector 1 0 0))
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(to-dir (vector 1 0 0))
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(time 0)
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(tick 1))
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(define/public (move pos dur)
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(set! from to)
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(set! from-dir to-dir)
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(set! to pos)
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(set! to-dir (vnormalise (vsub from to)))
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(set! time 0)
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(set! tick dur))
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(define/public (update t d)
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(set! time (+ time d)))
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(super-new)))
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;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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(define (add-blendshape key model)
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(let ((b (load-primitive model))
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(pname (string-append "p" (number->string key))))
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(pdata-add pname "v")
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(pdata-index-map!
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(lambda (i p)
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(with-primitive b (pdata-ref "p" i)))
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pname)
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(destroy b)))
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(define (set-blendshape key)
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(pdata-copy (string-append "p" (number->string key)) "p"))
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(define spider-insect-view%
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(class insect-view%
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(inherit-field from to from-dir to-dir time tick)
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(field
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(root (let ((p (with-state
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(hint-unlit)
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(colour (vector 0 0 0))
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(load-primitive "meshes/spider-1.obj"))))
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(with-primitive p
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(pdata-copy "p" "p0")
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(add-blendshape 1 "meshes/spider-2.obj")
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(add-blendshape 2 "meshes/spider-3.obj") p)))
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(anim-t 0)
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(anim-d (* 0.2 (rndf)))
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(blendshape 0))
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(define/override (update t d)
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(with-primitive root
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(when (> anim-t anim-d)
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(set! anim-t 0)
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(set! blendshape (modulo (+ blendshape 1) 3))
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(set-blendshape blendshape))
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(identity)
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(let ((h (hermite-tangent from to (vmul from-dir 2) (vmul to-dir 2) (/ time tick))
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#;(vlerp-tangent from to (/ time tick))))
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(translate (car h))
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(concat (maim (vector 0 0 1) (vnormalise (cadr h))))
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(scale 1)))
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(set! time (+ time d))
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(set! anim-t (+ anim-t d)))
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(super-new)))
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(clear)
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(clear-colour 0.5)
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(define s (make-object spider-insect-view% 0 (vector 0 0 0) 'spider))
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(define t 0)
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(every-frame
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(begin
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(when (> (time) t)
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(set! t (+ (time) 1))
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(send s move (vmul (srndvec) 10) 1))
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(send s update (time) (delta))))
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