(define-module (assimp assimp)
- #:use-module (ice-9 iconv)
- #:use-module (rnrs bytevectors)
+ #:use-module (assimp low-level)
+ #:use-module (assimp low-level cimport)
+ #:use-module (assimp low-level color)
+ #:use-module (assimp low-level material)
+ #:use-module (assimp low-level mesh)
+ #:use-module (assimp low-level scene)
+ #:use-module (assimp low-level types)
+ #:use-module (assimp low-level vector)
#:use-module (system foreign))
-(define libassimp (dynamic-link "libassimp"))
-
-(define aiImportFile
- (pointer->procedure '*
- (dynamic-func "aiImportFile" 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-array num-index root-index type)
- (lambda (pointer)
- (let ((num (bv-uint-ref pointer num-index))
- (rootp (make-pointer (bv-uint-ref pointer root-index))))
- (cond ((> num 0)
- (array->list
- (pointer->bytevector rootp num 0 type)))
- (else
- '())))))
-
-(define* (get-pointer-of-pointers 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 8 12 wrap-mesh))
- (materials (get-pointer-of-pointers 16 20 wrap-material))
- (animations (get-pointer-of-pointers 24 28))
- (textures (get-pointer-of-pointers 32 36))
- (lights (get-pointer-of-pointers 40 44))
- (cameras (get-pointer-of-pointers 48 52)))
-
-(define (load-scene filename flags)
- (wrap-scene
- (aiImportFile (string->pointer filename)
- flags)))
-
-(export load-scene
- unwrap-scene
- scene?
- scene-contents)
+(define-conversion-type parse-aiScene -> ai-scene
+ (flags (field 'mFlags))
+ (root-node (wrap (field 'mRootNode) wrap-ai-node))
+ (meshes (wrap (array (field 'mNumMeshes) (field 'mMeshes)) wrap-ai-mesh))
+ (materials (wrap (array (field 'mNumMaterials) (field 'mMaterials)) wrap-ai-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))))
+
+(export ai-scene?
+ ai-scene-contents
+ ai-scene-flags
+ ai-scene-root-node
+ ai-scene-meshes
+ ai-scene-materials
+ ai-scene-animations
+ ai-scene-textures
+ ai-scene-lights
+ ai-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 1096 1100 wrap-node))
- (meshes (get-array 1104 1108 'u32)))
+(define-conversion-type parse-aiNode -> ai-node
+ (name (sized-string (field 'mName)))
+ (transformation (field 'mTransformation))
+ (parent (wrap (field 'mParent) wrap-ai-node))
+ (children (wrap (array (field 'mNumChildren) (field 'mChildren)) wrap-ai-node))
+ (meshes (array (field 'mNumMeshes) (field 'mMeshes))))
-(export node?
- node-contents)
+(export ai-node?
+ ai-node-contents
+ ai-node-name
+ ai-node-transformation
+ ai-node-parent
+ ai-node-children
+ ai-node-meshes)
;;; Meshes
-(define-type mesh
- (num-primitive-types (lambda (p) (bv-uint-ref p 0)))
- (vertices (get-pointer-of-pointers 4 12))
- (faces (get-pointer-of-pointers 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 128 132))
- (material-index (lambda (p) (bv-uint-ref p 136))))
-
-(export mesh?
- mesh-contents)
+(define-conversion-type parse-aiMesh -> ai-mesh
+ (name (sized-string (field 'mName)))
+ (primitive-types (field 'mPrimitiveTypes))
+ (vertices (wrap
+ (array (field 'mNumVertices) (field 'mVertices) #:element-proc get-element-address)
+ wrap-ai-vector3d))
+ (faces (wrap
+ (array (field 'mNumFaces) (field 'mFaces) #:element-size 8 #:element-proc get-element-address)
+ wrap-ai-face))
+ (normals (wrap
+ (array (field 'mNumVertices) (field 'mNormals) #:element-size 12 #:element-proc get-element-address)
+ wrap-ai-vector3d))
+ (tangents (wrap
+ (array (field 'mNumVertices) (field 'mTangents) #:element-size 12 #:element-proc get-element-address)
+ wrap-ai-vector3d))
+ (bitangents (wrap
+ (array (field 'mNumVertices) (field 'mBitangents) #:element-size 12 #:element-proc get-element-address)
+ wrap-ai-vector3d))
+ (colors (map
+ (lambda (c)
+ (wrap
+ (array (field 'mNumVertices) c #:element-size 16 #:element-proc get-element-address)
+ wrap-ai-color4d))
+ (field 'mColors)))
+ (texture-coords (map
+ (lambda (tc)
+ (wrap
+ (array (field 'mNumVertices) tc #:element-size 12 #:element-proc get-element-address)
+ wrap-ai-vector3d))
+ (field 'mTextureCoords)))
+ (num-uv-components (field 'mNumUVComponents))
+ (bones (wrap (array (field 'mNumBones) (field 'mBones)) wrap-ai-bone))
+ (material-index (field 'mMaterialIndex)))
+
+(export ai-mesh?
+ ai-mesh-contents
+ ai-mesh-name
+ ai-mesh-primitive-types
+ ai-mesh-vertices
+ ai-mesh-faces
+ ai-mesh-normals
+ ai-mesh-tangents
+ ai-mesh-bitangents
+ ai-mesh-colors
+ ai-mesh-texture-coords
+ ai-mesh-num-uv-components
+ ai-mesh-bones
+ ai-mesh-material-index)
;;; Materials
-(define-type material
- (properties (get-pointer-of-pointers 4 0))
- (allocated (lambda (p) (bv-uint-ref p 8))))
+(define-conversion-type parse-aiMaterial -> ai-material
+ (properties (array (field 'mNumProperties) (field 'mProperties)))
+ (num-allocated (field 'mNumAllocated)))
+
+(export ai-material?
+ ai-material-contents
+ ai-material-properties
+ ai-material-num-allocated)
+
+
+;;; Faces
+
+(define-conversion-type parse-aiFace -> ai-face
+ (indices (array (field 'mNumIndices) (field 'mIndices))))
+
+(export ai-face?
+ ai-face-contents
+ ai-face-indices)
+
+
+;;; Vectors
+
+(define-conversion-type parse-aiVector2D -> ai-vector2d
+ (x (field 'x))
+ (y (field 'y)))
+
+(export ai-vector2d?
+ ai-vector2d-contents
+ ai-vector2d-x
+ ai-vector2d-y)
+
+(define-conversion-type parse-aiVector3D -> ai-vector3d
+ (x (field 'x))
+ (y (field 'y))
+ (z (field 'z)))
+
+(export ai-vector3d?
+ ai-vector3d-contents
+ ai-vector3d-x
+ ai-vector3d-y
+ ai-vector3d-z)
+
+
+;;; Colors
+
+(define-conversion-type parse-aiColor4D -> ai-color4d
+ (r (field 'r))
+ (g (field 'g))
+ (b (field 'b))
+ (a (field 'a)))
+
+(export ai-color4d?
+ ai-color4d-contents
+ ai-color4d-r
+ ai-color4d-g
+ ai-color4d-b
+ ai-color4d-a)
+
+
+;;; Bones
+
+(define-conversion-type parse-aiBone -> ai-bone
+ (name (sized-string (field 'mName)))
+ (weights (wrap
+ (array (field 'mNumWeights) (field 'mWeights) #:element-size 8 #:element-proc get-element-address)
+ wrap-ai-vertex-weight))
+ (offset-matrix (field 'mOffsetMatrix)))
+
+(export ai-bone?
+ ai-bone-contents
+ ai-bone-name
+ ai-bone-weights
+ ai-bone-offset-matrix)
+
+
+;;; Weights
+
+(define-conversion-type parse-aiVertexWeight -> ai-vertex-weight
+ (vertex-id (field 'mVertexId))
+ (weight (field 'mWeight)))
+
+(export ai-vertex-weight?
+ ai-vertex-weight-contents
+ ai-vertex-weight-vertex-id
+ ai-vertex-weight-weight)
+
+
+;;; Functions
+
+(define-public (ai-import-file filename flags)
+ (wrap-ai-scene
+ (aiImportFile (string->pointer filename)
+ flags)))
-(export material?
- material-contents)
+(define-public (ai-multiply-matrix4 m1 m2)
+ (let ((cm1 (make-c-struct aiMatrix4x4-type m1))
+ (cm2 (make-c-struct aiMatrix4x4-type m2)))
+ (aiMultiplyMatrix4 cm1 cm2)
+ (parse-c-struct cm1 aiMatrix4x4-type)))
projects / guile-assimp.git / blobdiff