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Diffstat (limited to 'mesalib/src/glu/sgi/libnurbs/nurbtess/rectBlock.cc')
| -rw-r--r-- | mesalib/src/glu/sgi/libnurbs/nurbtess/rectBlock.cc | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/mesalib/src/glu/sgi/libnurbs/nurbtess/rectBlock.cc b/mesalib/src/glu/sgi/libnurbs/nurbtess/rectBlock.cc new file mode 100644 index 000000000..f457b1573 --- /dev/null +++ b/mesalib/src/glu/sgi/libnurbs/nurbtess/rectBlock.cc @@ -0,0 +1,196 @@ +/* +** 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. +** +*/ +/* +*/ + +#include "gluos.h" +#include <stdlib.h> +#include <stdio.h> +#include "glimports.h" +#include "zlassert.h" +#include <GL/gl.h> + +#include "rectBlock.h" + +rectBlock::rectBlock(gridBoundaryChain* left, gridBoundaryChain* right, Int beginVline, Int endVline) +{ + Int i; + + + upGridLineIndex = left->getVlineIndex(beginVline); + + lowGridLineIndex = left->getVlineIndex(endVline); + + Int n = upGridLineIndex-lowGridLineIndex+1; //number of grid lines + leftIndices = (Int*) malloc(sizeof(Int) * n); + assert(leftIndices); + rightIndices = (Int*) malloc(sizeof(Int) * n); + assert(rightIndices); + for(i=0; i<n; i++) + { + + leftIndices[i] = left->getInnerIndex(i+beginVline); + rightIndices[i] = right->getInnerIndex(i+beginVline); + } +} + + +rectBlock::~rectBlock() +{ + free(leftIndices); + free(rightIndices); +} + +void rectBlock::print() +{ + Int i; + printf("block:\n"); + for(i=upGridLineIndex; i >= lowGridLineIndex; i--) + { + printf("gridline %i, (%i,%i)\n", i, leftIndices[upGridLineIndex-i], rightIndices[upGridLineIndex-i]); + } +} + + + +void rectBlock::draw(Real* u_values, Real* v_values) +{ + Int i,j,k; + //upgrid line to bot grid line +#ifdef DEBUG +printf("upGridLineIndex=%i, lowGridLineIndex=%i\n", upGridLineIndex, lowGridLineIndex); +#endif + for(k=0, i=upGridLineIndex; i > lowGridLineIndex; i--, k++) + { + glBegin(GL_QUAD_STRIP); + + for(j=leftIndices[k+1]; j<= rightIndices[k+1]; j++) + { + glVertex2f(u_values[j], v_values[i]); + glVertex2f(u_values[j], v_values[i-1]); + } + glEnd(); + } +} + + +Int rectBlock::num_quads() +{ + Int ret=0; + Int k,i; + for(k=0, i=upGridLineIndex; i>lowGridLineIndex; i--, k++) + { + ret += (rightIndices[k+1]-leftIndices[k+1]); + } + return ret; +} + +Int rectBlockArray::num_quads() +{ + Int ret=0; + for(Int i=0; i<n_elements; i++) + ret += array[i]->num_quads(); + return ret; +} + +rectBlockArray::rectBlockArray(Int s) +{ + Int i; + n_elements = 0; + size = s; + array = (rectBlock**) malloc(sizeof(rectBlock*) * s); + assert(array); +//initialization + for(i=0; i<s; i++) + array[i] = NULL; +} + +rectBlockArray::~rectBlockArray() +{ + Int i; + for(i=0; i<size; i++) + { + if(array[i] != NULL) + delete array[i]; + } + free(array); +} + +//put to the end of the array, check the size +void rectBlockArray::insert(rectBlock* newBlock) +{ + Int i; + if(n_elements == size) //full + { + rectBlock** temp = (rectBlock**) malloc(sizeof(rectBlock) * (2*size+1)); + assert(temp); + //initialization + for(i=0; i<2*size+1; i++) + temp[i] = NULL; + + for(i=0; i<n_elements; i++) + temp[i] = array[i]; + + free(array); + array = temp; + size = 2*size + 1; + } + + array[n_elements++] = newBlock; +} + +void rectBlockArray::print() +{ + Int i; + for(i=0; i<n_elements; i++) + array[i]->print(); +} + +void rectBlockArray::draw(Real* u_values, Real* v_values) +{ + Int i; + for(i=0; i<n_elements; i++) + array[i]->draw(u_values, v_values); +} + + + + + + + + + + |