From f4092abdf94af6a99aff944d6264bc1284e8bdd4 Mon Sep 17 00:00:00 2001 From: Reinhard Tartler Date: Mon, 10 Oct 2011 17:43:39 +0200 Subject: Imported nx-X11-3.1.0-1.tar.gz Summary: Imported nx-X11-3.1.0-1.tar.gz Keywords: Imported nx-X11-3.1.0-1.tar.gz into Git repository --- .../gfx/lib/glu/libnurbs/interface/bezierPatch.cc | 205 +++++++++++++++++++++ 1 file changed, 205 insertions(+) create mode 100644 nx-X11/extras/ogl-sample/main/gfx/lib/glu/libnurbs/interface/bezierPatch.cc (limited to 'nx-X11/extras/ogl-sample/main/gfx/lib/glu/libnurbs/interface/bezierPatch.cc') diff --git a/nx-X11/extras/ogl-sample/main/gfx/lib/glu/libnurbs/interface/bezierPatch.cc b/nx-X11/extras/ogl-sample/main/gfx/lib/glu/libnurbs/interface/bezierPatch.cc new file mode 100644 index 000000000..8129f2d69 --- /dev/null +++ b/nx-X11/extras/ogl-sample/main/gfx/lib/glu/libnurbs/interface/bezierPatch.cc @@ -0,0 +1,205 @@ +/* +** License Applicability. Except to the extent portions of this file are +** made subject to an alternative license as permitted in the SGI Free +** Software License B, Version 1.1 (the "License"), the contents of this +** file are subject only to the provisions of the License. You may not use +** this file except in compliance with the License. You may obtain a copy +** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600 +** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at: +** +** http://oss.sgi.com/projects/FreeB +** +** Note that, as provided in the License, the Software is distributed on an +** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS +** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND +** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A +** PARTICULAR PURPOSE, AND NON-INFRINGEMENT. +** +** Original Code. The Original Code is: OpenGL Sample Implementation, +** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics, +** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc. +** Copyright in any portions created by third parties is as indicated +** elsewhere herein. All Rights Reserved. +** +** Additional Notice Provisions: The application programming interfaces +** established by SGI in conjunction with the Original Code are The +** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released +** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version +** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X +** Window System(R) (Version 1.3), released October 19, 1998. This software +** was created using the OpenGL(R) version 1.2.1 Sample Implementation +** published by SGI, but has not been independently verified as being +** compliant with the OpenGL(R) version 1.2.1 Specification. +** +** $Date: 2004/03/14 08:29:10 $ $Revision: 1.1.1.4 $ +*/ +/* +** $Header: /cvs/xorg/xc/extras/ogl-sample/main/gfx/lib/glu/libnurbs/interface/bezierPatch.cc,v 1.1.1.4 2004/03/14 08:29:10 eich Exp $ +*/ + +#include "gluos.h" +#include +#include +#include +#include /*for drawing bzier patch*/ +#include "bezierPatch.h" +#include "bezierEval.h" + +/* + *allocate an instance of bezierPatch. The control points are unknown. But + *the space of this array is allocated with size of + * uorder*vorder*dimension + * + */ +bezierPatch* bezierPatchMake(float umin, float vmin, float umax, float vmax, int uorder, int vorder, int dimension) +{ + bezierPatch* ret = (bezierPatch*) malloc(sizeof(bezierPatch)); + assert(ret); + ret->umin = umin; + ret->vmin = vmin; + ret->umax = umax; + ret->vmax = vmax; + ret->uorder = uorder; + ret->vorder = vorder; + ret->dimension = dimension; + ret->ctlpoints = (float*) malloc(sizeof(float) * dimension * uorder * vorder); + assert(ret->ctlpoints); + + ret->next = NULL; + + return ret; +} + +bezierPatch* bezierPatchMake2(float umin, float vmin, float umax, float vmax, int uorder, int vorder, int dimension, int ustride, int vstride, float* ctlpoints) +{ + bezierPatch* ret = (bezierPatch*) malloc(sizeof(bezierPatch)); + assert(ret); + ret->umin = umin; + ret->vmin = vmin; + ret->umax = umax; + ret->vmax = vmax; + ret->uorder = uorder; + ret->vorder = vorder; + ret->dimension = dimension; + ret->ctlpoints = (float*) malloc(sizeof(float) * dimension * uorder * vorder); + assert(ret->ctlpoints); + + /*copy the control points there*/ + int the_ustride = vorder * dimension; + int the_vstride = dimension; + for(int i=0; ictlpoints[i * the_ustride + j*the_vstride+k] = ctlpoints[i*ustride+j*vstride+k]; + + ret->next = NULL; + + return ret; +} + +/* + *deallocate the space as allocated by Make + */ +void bezierPatchDelete(bezierPatch *b) +{ + free(b->ctlpoints); + free(b); +} + +/*delete the whole linked list + */ +void bezierPatchDeleteList(bezierPatch *b) +{ + bezierPatch *temp; + for(temp = b; temp != NULL; temp = temp->next) + bezierPatchDelete(temp); +} + +bezierPatch* bezierPatchInsert(bezierPatch *list, bezierPatch *b) +{ + b->next = list; + return b; +} + +/*print the data stored in this patch*/ +void bezierPatchPrint(bezierPatch *b) +{ + printf("bezierPatch:\n"); + printf("umin,umax=(%f,%f), (vmin, vmax)=(%f,%f)\n", b->umin, b->umax, b->vmin, b->vmax); + printf("uorder=%i, vorder=%i\n", b->uorder, b->vorder); + printf("idmension = %i\n", b->dimension); +} + +/*print the whole list*/ +void bezierPatchPrintList(bezierPatch *list) +{ + bezierPatch* temp; + for(temp=list; temp != NULL; temp = temp->next) + bezierPatchPrint(temp); +} + +void bezierPatchEval(bezierPatch *b, float u, float v, float ret[]) +{ + if( u >= b->umin && u<= b->umax + && v >= b->vmin && v<= b->vmax) + { + + bezierSurfEval(b->umin, b->umax, b->uorder, b->vmin, b->vmax, b->vorder, b->dimension, b->ctlpoints, b->dimension * b->vorder, b->dimension, u, v, ret); + + } + else if(b->next != NULL) + bezierPatchEval(b->next, u,v, ret); + else + bezierSurfEval(b->umin, b->umax, b->uorder, b->vmin, b->vmax, b->vorder, b->dimension, b->ctlpoints, b->dimension * b->vorder, b->dimension, u, v, ret); +} + +/*the returned normal is normlized + */ +void bezierPatchEvalNormal(bezierPatch *b, float u, float v, float ret[]) +{ + bezierSurfEvalNormal(b->umin, b->umax, b->uorder, b->vmin, b->vmax, b->vorder, b->dimension, b->ctlpoints, b->dimension * b->vorder, b->dimension, u, v, ret); + + if( u >= b->umin && u<= b->umax + && v >= b->vmin && v<= b->vmax) + { + bezierSurfEvalNormal(b->umin, b->umax, b->uorder, b->vmin, b->vmax, b->vorder, b->dimension, b->ctlpoints, b->dimension * b->vorder, b->dimension, u, v, ret); + } + else if(b->next != NULL) + bezierPatchEvalNormal(b->next, u,v, ret); + else + bezierSurfEvalNormal(b->umin, b->umax, b->uorder, b->vmin, b->vmax, b->vorder, b->dimension, b->ctlpoints, b->dimension * b->vorder, b->dimension, u, v, ret); + +} + +void bezierPatchDraw(bezierPatch *bpatch, int u_reso, int v_reso) +{ + if(bpatch->dimension == 3) + glMap2f(GL_MAP2_VERTEX_3, bpatch->umin, bpatch->umax, 3*bpatch->vorder, bpatch->uorder, bpatch->vmin, bpatch->vmax,3, bpatch->vorder, (GLfloat*) bpatch->ctlpoints); + else + glMap2f(GL_MAP2_VERTEX_4, bpatch->umin, bpatch->umax, 4*bpatch->vorder, bpatch->uorder, bpatch->vmin, bpatch->vmax,3, bpatch->vorder, (GLfloat*) bpatch->ctlpoints); + + glMapGrid2f(u_reso, bpatch->umin, bpatch->umax, + v_reso, bpatch->vmin, bpatch->vmax); + glEvalMesh2(GL_LINE, 0, u_reso, 0, v_reso); +} + +void bezierPatchListDraw(bezierPatch *list, int u_reso, int v_reso) +{ + bezierPatch *temp; +glEnable(GL_LIGHTING); +glEnable(GL_LIGHT0); +glEnable(GL_MAP2_VERTEX_3); +glEnable(GL_AUTO_NORMAL); +glEnable(GL_NORMALIZE); +glColor3f(1,0,0); +#ifdef DEBUG +printf("mapmap\n"); +#endif + + + for(temp = list; temp != NULL; temp = temp->next) + bezierPatchDraw(temp, u_reso, v_reso); +} + + + -- cgit v1.2.3