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+/*
+** 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);
+}
+
+
+
+
+
+
+
+
+
+