(define-module (assimp assimp)
- #:use-module (ice-9 iconv)
- #:use-module (rnrs bytevectors)
+ #:use-module (assimp low-level)
+ #:use-module (assimp low-level material)
+ #:use-module (assimp low-level mesh)
+ #:use-module (assimp low-level scene)
#:use-module (system foreign))
(define libassimp (dynamic-link "libassimp"))
(list '* unsigned-int)))
-;;; Type Generation
-
-(define-syntax define-type
- (lambda (x)
- (define (mk-string . args)
- (string-concatenate
- (map (lambda (a)
- (if (string? a)
- a
- (symbol->string (syntax->datum a))))
- args)))
- (define (mk-symbol . args)
- (datum->syntax x
- (string->symbol
- (apply mk-string args))))
- (syntax-case x ()
- ((_ name (field field-proc) ...)
- (with-syntax ((type? (mk-symbol #'name "?"))
- (wrap-type (mk-symbol "wrap-" #'name))
- (unwrap-type (mk-symbol "unwrap-" #'name))
- (output-string (mk-string "#<" #'name " ~x>"))
- (type-contents (mk-symbol #'name "-contents")))
- #'(begin
- (define-wrapped-pointer-type name
- type?
- wrap-type unwrap-type
- (lambda (x p)
- (format p output-string
- (pointer-address (unwrap-type x)))))
- (define (type-contents wrapped)
- (let ((unwrapped (unwrap-type wrapped)))
- (cond ((= (pointer-address unwrapped) 0)
- '())
- (else
- (filter
- (lambda (f)
- (not (null? (cdr f))))
- (list (cons 'field (field-proc unwrapped))
- ...))))))))))))
-
-
-(define (bv-uint-ref pointer index)
- (bytevector-uint-ref
- (pointer->bytevector pointer 4 index)
- 0
- (native-endianness)
- 4))
-
-(define (get-aiString index)
- (lambda (pointer)
- (let* ((length (bv-uint-ref pointer index))
- (data (pointer->bytevector pointer length (+ index 4))))
- (bytevector->string data (fluid-ref %default-port-encoding)))))
-
-(define* (get-pointer index #:optional wrap-proc)
- (lambda (pointer)
- (let ((p (bv-uint-ref pointer index)))
- (cond ((= p 0) '())
- (else
- (let ((p2 (make-pointer p)))
- (list
- (cond (wrap-proc (wrap-proc p2))
- (else p2)))))))))
-
-(define* (get-pointer-of-pointers-procedure num-index root-index #:optional wrap-proc)
- (lambda (pointer)
- (let* ((num (bv-uint-ref pointer num-index))
- (rootp (make-pointer (bv-uint-ref pointer root-index))))
- (let loop ((i 0))
- (cond ((= i num)
- '())
- (else
- (let* ((p (make-pointer (bv-uint-ref rootp (* 4 i))))
- (wp (if wrap-proc (wrap-proc p) p)))
- (cons wp (loop (+ i 1))))))))))
-
;;; Scenes
-(define-type scene
- (flags (lambda (p) (bv-uint-ref p 0)))
- (root-node (lambda (p) (wrap-node (make-pointer (bv-uint-ref p 4)))))
- (meshes (get-pointer-of-pointers-procedure 8 12 wrap-mesh))
- (materials (get-pointer-of-pointers-procedure 16 20))
- (animations (get-pointer-of-pointers-procedure 24 28))
- (textures (get-pointer-of-pointers-procedure 32 36))
- (lights (get-pointer-of-pointers-procedure 40 44))
- (cameras (get-pointer-of-pointers-procedure 48 52)))
+(define-conversion-type parse-aiScene -> scene
+ (flags (field 'mFlags))
+ (root-node (wrap (field 'mRootNode) wrap-node))
+ (meshes (wrap (array (field 'mNumMeshes) (field 'mMeshes)) wrap-mesh))
+ (materials (wrap (array (field 'mNumMaterials) (field 'mMaterials)) wrap-material))
+ (animations (array (field 'mNumAnimations) (field 'mAnimations)))
+ (textures (array (field 'mNumTextures) (field 'mTextures)))
+ (lights (array (field 'mNumLights) (field 'mLights)))
+ (cameras (array (field 'mNumCameras) (field 'mCameras))))
(define (load-scene filename flags)
(wrap-scene
(aiImportFile (string->pointer filename)
- flags)))
+ flags)))
(export load-scene
- unwrap-scene
scene?
- scene-contents)
+ scene-contents
+ scene-flags
+ scene-root-node
+ scene-meshes
+ scene-materials
+ scene-animations
+ scene-textures
+ scene-lights
+ scene-cameras)
;;; Nodes
-(define-type node
- (name (get-aiString 0))
- (transformation (lambda (p) (array->list (pointer->bytevector p 16 1028 'f32))))
- (parent (get-pointer 1092 wrap-node))
- (children (get-pointer-of-pointers-procedure 1096 1100 wrap-node))
- (meshes (get-pointer-of-pointers-procedure 1104 1108 wrap-mesh)))
+(define-conversion-type parse-aiNode -> node
+ (name (sized-string (field 'mName)))
+ (transformation (field 'mTransformation))
+ (parent (wrap (field 'mParent) wrap-node))
+ (children (wrap (array (field 'mNumChildren) (field 'mChildren)) wrap-node))
+ (meshes (array (field 'mNumMeshes) (field 'mMeshes))))
(export node?
- node-contents)
+ node-contents
+ node-name
+ node-transformation
+ node-parent
+ node-children
+ node-meshes)
;;; Meshes
-(define-type mesh
- (num-primitive-types (lambda (p) (bv-uint-ref p 0)))
- (vertices (get-pointer-of-pointers-procedure 4 12))
- (faces (get-pointer-of-pointers-procedure 8 124))
- (normals (lambda (p) (bv-uint-ref p 16)))
- (tangents (lambda (p) (bv-uint-ref p 20)))
- (bitangents (lambda (p) (bv-uint-ref p 24)))
- (colors (lambda (p) (bv-uint-ref p 28))) ;AI_MAX_NUMBER_OF_COLOR_SETS
- (texture-coords (lambda (p) (bv-uint-ref p 60))) ;AI_MAX_NUMBER_OF_TEXTURECOORDS
- (num-uv-components (lambda (p) (bv-uint-ref p 92))) ;AI_MAX_NUMBER_OF_TEXTURECOORDS
- (bones (get-pointer-of-pointers-procedure 128 132))
- (material-index (lambda (p) (bv-uint-ref p 136))))
+(define-conversion-type parse-aiMesh -> mesh
+ (name (sized-string (field 'mName)))
+ (primitive-types (field 'mPrimitiveTypes))
+ (vertices (array (field 'mNumVertices) (field 'mVertices) #:element-proc get-element-address))
+ (faces (wrap (array (field 'mNumFaces) (field 'mFaces) #:element-size 8 #:element-proc get-element-address) wrap-face))
+ (normals (array (field 'mNumVertices) (field 'mNormals) #:element-size 12 #:element-proc get-element-address))
+ (tangents (array (field 'mNumVertices) (field 'mTangents) #:element-size 12 #:element-proc get-element-address))
+ (bitangents (array (field 'mNumVertices) (field 'mBitangents) #:element-size 12 #:element-proc get-element-address))
+ (colors (field 'mColors))
+ (texture-coords (field 'mTextureCoords))
+ (num-uv-components (field 'mNumUVComponents))
+ (bones (array (field 'mNumBones) (field 'mBones)))
+ (material-index (field 'mMaterialIndex)))
(export mesh?
- mesh-contents)
+ mesh-contents
+ mesh-name
+ mesh-primitive-types
+ mesh-vertices
+ mesh-faces
+ mesh-normals
+ mesh-tangents
+ mesh-bitangents
+ mesh-colors
+ mesh-texture-coords
+ mesh-num-uv-components
+ mesh-bones
+ mesh-material-index)
+
+
+;;; Materials
+
+(define-conversion-type parse-aiMaterial -> material
+ (properties (array (field 'mNumProperties) (field 'mProperties)))
+ (num-allocated (field 'mNumAllocated)))
+
+(export material?
+ material-contents
+ material-properties
+ material-num-allocated)
+
+
+;;; Faces
+
+(define-conversion-type parse-aiFace -> face
+ (indices (array (field 'mNumIndices) (field 'mIndices))))
+
+(export face?
+ face-contents
+ face-indices)
projects / guile-assimp.git / blobdiff