author | William Roberts <williamr@symbian.org> |
Fri, 23 Jul 2010 14:07:53 +0100 | |
branch | GCC_SURGE |
changeset 129 | 4b6914ffcd6b |
parent 0 | 5d03bc08d59c |
permissions | -rw-r--r-- |
0
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/* |
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* Copyright (c) 2003 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of the License "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: Node interface |
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* |
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*/ |
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|
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#ifndef __M3G_NODE_H__ |
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#define __M3G_NODE_H__ |
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|
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/*! |
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* \internal |
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* \file |
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* \brief Node interface |
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*/ |
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#include "m3g_transformable.h" |
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#include "m3g_gl.h" |
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#include "m3g_math.h" |
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#include "m3g_lightmanager.h" |
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#include "m3g_renderqueue.h" |
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#define NODE_ALPHA_FACTOR_BITS 16 |
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|
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/* NOTE: Implementation depends on these values -- do not change! */ |
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#define CULLMASK_OUTSIDE 0x0 |
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#define CULLMASK_INSIDE 0x1 |
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#define CULLMASK_INTERSECTS 0x2 |
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#define CULLMASK_ALL 0xAAA |
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M3G_CT_ASSERT(CULLMASK_INSIDE == (CULLMASK_INTERSECTS >> 1)); |
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/* |
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* Estimated load metrics for VF culling |
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* |
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*/ |
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#define VFC_BBOX_COST 30 |
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#define VFC_NODE_OVERHEAD 10 |
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#define VFC_RENDERCALL_OVERHEAD 15 |
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#define VFC_TRIANGLE_COST 1 |
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#define VFC_VERTEX_COST 1 |
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/* |
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* Enable bit masks |
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*/ |
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#define NODE_RENDER_BIT 0x1 |
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#define NODE_PICK_BIT 0x2 |
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/*! |
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* \internal |
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* \brief RayIntersection object |
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*/ |
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struct M3GRayIntersectionImpl |
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{ |
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Node *root; |
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Camera *camera; |
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M3Gfloat x; |
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M3Gfloat y; |
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M3Gfloat tMin; |
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M3Gfloat distance; |
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M3Gint submeshIndex; |
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M3Gfloat textureS[M3G_NUM_TEXTURE_UNITS]; |
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M3Gfloat textureT[M3G_NUM_TEXTURE_UNITS]; |
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M3Gfloat normal[3]; |
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Node *intersected; |
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}; |
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/* |
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RayIntersection Java side result must be in this format. |
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Offsets Contents |
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------------------------------------- |
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0 distance |
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1 subMeshIndex |
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2-3 textureS coordinates |
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4-5 textureT coordinates |
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6-8 normal coordinates |
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9-14 ray coordinates and direction |
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*/ |
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/*! |
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* \internal |
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* \brief Recursively inherited state passed to each SetupRender call |
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*/ |
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typedef struct |
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{ |
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Matrix toCamera; |
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M3Gbitmask cullMask; |
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} SetupRenderState; |
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/* Function pointer prototypes */ |
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typedef M3Gbool (*m3gAlignFuncPtr) (Node *self, const Node *refNode); |
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typedef void (*m3gDoRenderFuncPtr) (Node *self, RenderContext *ctx, const Matrix *toCamera, M3Gint patchIndex); |
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typedef M3Gint (*m3gGetBBoxFuncPtr) (Node *self, AABB *bbox); |
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typedef M3Gbool (*m3gRayIntersectFuncPtr) (Node *self, M3Gint mask, M3Gfloat *ray, RayIntersection *ri, Matrix *toGroup); |
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typedef M3Gbool (*m3gSetupRenderFuncPtr) (Node *self, const Node *caller, SetupRenderState *rs, RenderQueue *renderQueue); |
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typedef void (*m3gUpdateDuplicateRefFuncPtr) (Node *self, Object **pairs, M3Gint numPairs); |
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typedef M3Gbool (*m3gValidate) (Node *self, M3Gbitmask state, M3Gint scope); |
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/*! |
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* \internal |
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* \brief Node class virtual functions |
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*/ |
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typedef struct |
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{ |
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TransformableVFTable transformable; |
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m3gAlignFuncPtr align; |
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m3gDoRenderFuncPtr doRender; |
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m3gGetBBoxFuncPtr getBBox; |
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m3gRayIntersectFuncPtr rayIntersect; |
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m3gSetupRenderFuncPtr setupRender; |
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m3gUpdateDuplicateRefFuncPtr updateDuplicateReferences; |
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m3gValidate validate; |
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} NodeVFTable; |
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/*! |
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* \internal |
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* \brief Node class structure |
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* |
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*/ |
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struct M3GNodeImpl |
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{ |
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Transformable transformable; |
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/* See default values form RI implementation Node.java */ |
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139 |
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/* These scene graph pointers are managed by the Group class */ |
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141 |
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Node *parent; |
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Node *left; |
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Node *right; |
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145 |
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M3Gint scope; |
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/* Alignment references */ |
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Node *zReference; |
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Node *yReference; |
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/* Various node flags and other bitfield data */ |
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M3Guint alphaFactor : NODE_ALPHA_FACTOR_BITS; |
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M3Guint zTarget : 3; /* Z alignment target */ |
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M3Guint yTarget : 3; /* Y alignment target */ |
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M3Guint enableBits : 2; /* Rendering/picking enable bits */ |
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M3Guint hasBones : 1; /* Node is part of a SkinnedMesh skeleton */ |
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M3Guint hasRenderables : 1; /* Node has renderables in its subtree */ |
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M3Guint dirtyBits : 2; /* BBox and transform dirty bits */ |
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}; |
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/*! |
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* \internal \brief Node bounding box in valid/dirty bitmasks |
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*/ |
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#define NODE_BBOX_BIT 0x01 |
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/*! |
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* \internal \brief Node-child transformations in valid/dirty bitmasks |
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*/ |
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#define NODE_TRANSFORMS_BIT 0x02 |
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/* Sanity check; check compiler padding settings if this assert fails */ |
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M3G_CT_ASSERT(sizeof(Node) == sizeof(Transformable) + 28); |
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/*---------------------------------------------------------------------- |
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* Virtual functions |
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*--------------------------------------------------------------------*/ |
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static void m3gDestroyNode(Object *obj); |
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static M3Gbool m3gNodeAlign(Node *self, const Node *refNode); |
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static M3Gbool m3gNodeDuplicate(const Object *original, Object **clone, Object **pairs, M3Gint *numPairs); |
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static M3Gint m3gNodeGetBBox(Node *self, AABB *bbox); |
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static M3Gbool m3gNodeIsCompatible(M3Gint property); |
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static M3Gbool m3gNodeRayIntersect(Node *self, M3Gint mask, M3Gfloat *ray, RayIntersection *ri, Matrix *toGroup); |
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static void m3gNodeUpdateProperty(Object *self, M3Gint property, M3Gint valueSize, const M3Gfloat *value); |
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static void m3gNodeUpdateDuplicateReferences(Node *self, Object **pairs, M3Gint numPairs); |
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static M3Gbool m3gNodeValidate(Node *self, M3Gbitmask stateBits, M3Gint scope); |
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static M3G_INLINE M3Gint m3gGetNodeBBox(Node *node, AABB *bbox) |
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{ |
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return M3G_VFUNC(Node, node, getBBox)(node, bbox); |
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} |
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static M3G_INLINE M3Gbool m3gValidateNode(Node *node, M3Gbitmask stateBits, M3Gint scope) |
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{ |
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return M3G_VFUNC(Node, node, validate)(node, stateBits, scope); |
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} |
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/*---------------------------------------------------------------------- |
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* Internal functions |
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*--------------------------------------------------------------------*/ |
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static void m3gInitNode(Interface *m3g, Node *node, M3GClass classID); |
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static M3Guint m3gGetTotalAlphaFactor(Node *node, const Node *root); |
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static M3Gbool m3gHasEnabledPath(const Node *node, const Node *root); |
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static M3Gbool m3gHasPickablePath(const Node *node, const Node *root); |
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static M3Gbool m3gIsChildOf(const Node *parent, const Node *child); |
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static Node *m3gGetRoot(const Node *node); |
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static void m3gInvalidateNode(Node *node, M3Gbitmask flags); |
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typedef void (*NodeFuncPtr) (Node *node, void *params); |
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static void m3gForSubtree (Node *node, NodeFuncPtr func, void *params); |
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static void m3gSetParent (Node *node, Node *parent); |
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static Node *m3gGetDuplicatedInstance(Node *self, Object **references, M3Gint numRef); |
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#if defined(M3G_ENABLE_VF_CULLING) |
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static void m3gUpdateCullingMask(SetupRenderState *s, const Camera *cam, const AABB *bbox); |
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#endif |
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/*! |
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* \internal |
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* \brief Type-safe helper function |
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*/ |
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static M3G_INLINE void m3gGetCompositeNodeTransform(const Node *node, Matrix *mtx) |
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{ |
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m3gGetCompositeTransform((Transformable*) node, mtx); |
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M3G_ASSERT(m3gIsWUnity(mtx)); |
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} |
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/*! |
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* \internal |
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* \brief Type-safe helper function |
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*/ |
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static M3G_INLINE M3Gbool m3gGetInverseNodeTransform(const Node *node, Matrix *mtx) |
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{ |
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M3Gbool ok = m3gGetInverseCompositeTransform((Transformable*) node, mtx); |
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M3G_ASSERT(m3gIsWUnity(mtx)); |
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return ok; |
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} |
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#endif /*__M3G_NODE_H__*/ |