94 lines
1.5 KiB
Objective-C
94 lines
1.5 KiB
Objective-C
//
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// JAIcosMesh.m
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// icosmesh
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//
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// Created by Jens Ayton on 2009-11-18.
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// Copyright 2009 Jens Ayton. All rights reserved.
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//
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#import "JAIcosMesh.h"
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#import "JAVertexSet.h"
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#import "JAIcosTriangle.h"
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@implementation JAIcosMesh
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- (JAVertexSet*) vertexSet
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{
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return _vertexSet;
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}
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- (NSUInteger) maxIndex
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{
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return _maxIndex;
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}
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- (id) init
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{
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return [self initWithVertexSet:nil];
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}
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+ (id) meshWithVertexSet:(JAVertexSet *)vertexSet
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{
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return [[self alloc] initWithVertexSet:vertexSet];
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}
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- (id) initWithVertexSet:(JAVertexSet *)vertexSet
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{
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if ((self = [super init]))
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{
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if (vertexSet == nil) vertexSet = [[JAVertexSet alloc] init];
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_vertexSet = vertexSet;
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_indices = [NSMutableArray array];
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if (vertexSet == nil || _indices == nil) return nil;
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}
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return self;
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}
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- (NSUInteger) faceCount
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{
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return [_indices count] / 3;
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}
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- (void) addTriangle:(JAIcosTriangle *)triangle
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{
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if (triangle == nil) return;
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[self addOneVertex:[triangle vertexA]];
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[self addOneVertex:[triangle vertexB]];
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[self addOneVertex:[triangle vertexC]];
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}
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- (void) addTriangles:(NSArray *)triangles
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{
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JAIcosTriangle *triangle;
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unsigned i;
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for (i = 0; i < [triangles count]; i++)
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{
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triangle = (JAIcosTriangle*)[triangles objectAtIndex: i];
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[self addTriangle:triangle];
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}
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}
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- (NSArray *) indexArray
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{
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return [_indices copy];
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}
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- (void) addOneVertex:(Vertex)v
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{
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NSUInteger index = [[self vertexSet] indexForVertex:v];
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[_indices addObject:[NSNumber numberWithUnsignedInteger:index]];
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if (_maxIndex < index) _maxIndex = index;
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}
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@end
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