+++ /dev/null
-/*
-** 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 <assert.h>
-#include <GL/gl.h>
-
-#include "primitiveStream.h"
-
-Int primStream::num_triangles()
-{
- Int i;
- Int ret=0;
- for(i=0; i<index_lengths; i++)
- {
- ret += lengths[i]-2;
- }
- return ret;
-}
-
-
-
-/*the begining of inserting a new primitive.
- *reset counter to be 0.
- */
-void primStream::begin()
-{
- counter = 0;
-}
-
-void primStream::insert(Real u, Real v)
-{
- /*if the space cannot hold u and v,
- *we have to expand the array
- */
- if(index_vertices+1 >= size_vertices) {
- Real* temp = (Real*) malloc (sizeof(Real) * (2*size_vertices + 2));
- assert(temp);
-
- /*copy*/
- for(Int i=0; i<index_vertices; i++)
- temp[i] = vertices[i];
-
- free(vertices);
- vertices = temp;
- size_vertices = 2*size_vertices + 2;
- }
-
- vertices[index_vertices++] = u;
- vertices[index_vertices++] = v;
- counter++;
-}
-
-/*the end of a primitive.
- *increase index_lengths
- */
-void primStream::end(Int type)
-{
- Int i;
- /*if there is no vertex in this primitive,
- *nothing needs to be done
- */
- if(counter == 0) return ;
-
- if(index_lengths >= size_lengths){
- Int* temp = (Int*) malloc(sizeof(Int) * (2*size_lengths + 2));
- assert(temp);
- Int* tempTypes = (Int*) malloc(sizeof(Int) * (2*size_lengths + 2));
- assert(tempTypes);
-
- /*copy*/
- for(i=0; i<index_lengths; i++){
- temp[i] = lengths[i];
- tempTypes[i] = types[i];
- }
-
- free(lengths);
- free(types);
- lengths = temp;
- types = tempTypes;
- size_lengths = 2*size_lengths + 2;
- }
- lengths[index_lengths] = counter;
- types[index_lengths] = type;
- index_lengths++;
-}
-
-void primStream::print()
-{
- Int i,j,k;
- printf("index_lengths=%i,size_lengths=%i\n", index_lengths, size_lengths);
- printf("index_vertices=%i,size_vertices=%i\n", index_vertices, size_vertices);
- k=0;
- for(i=0; i<index_lengths; i++)
- {
- if(types[i] == PRIMITIVE_STREAM_FAN)
- printf("primitive-FAN:\n");
- else
- printf("primitive-STRIP:\n");
- for(j=0; j<lengths[i]; j++)
- {
- printf("(%f,%f) ", vertices[k], vertices[k+1]);
- k += 2;
- }
- printf("\n");
- }
-}
-
-primStream::primStream(Int sizeLengths, Int sizeVertices)
-{
- lengths = (Int*)malloc (sizeof(Int) * sizeLengths);
- assert(lengths);
- types = (Int*)malloc (sizeof(Int) * sizeLengths);
- assert(types);
-
- vertices = (Real*) malloc(sizeof(Real) * sizeVertices);
- assert(vertices);
-
- index_lengths = 0;
- index_vertices = 0;
- size_lengths = sizeLengths;
- size_vertices = sizeVertices;
-
- counter = 0;
-}
-
-primStream::~primStream()
-{
- free(lengths);
- free(types);
- free(vertices);
-}
-
-void primStream::draw()
-{
- Int i,j,k;
- k=0;
- for(i=0; i<index_lengths; i++)
- {
- switch(types[i]){
- case PRIMITIVE_STREAM_FAN:
- glBegin(GL_TRIANGLE_FAN);
- break;
- case PRIMITIVE_STREAM_STRIP:
- glBegin(GL_TRIANGLE_STRIP);
- break;
- }
-
- for(j=0; j<lengths[i]; j++){
- glVertex2fv(vertices+k);
- k += 2;
- }
- glEnd();
- }
-}
-
projects / mesa.git / blobdiff