1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
//#ident "$Id: Cylinder.cpp,v 1.7 2003/05/12 12:17:58 rzr Exp $"
/***************************************************************************
Cylinder.cpp - description
-------------------
begin : Wed Jan 26 2000
copyright : (C) 2000 by Henrik Enqvist
email : henqvist@excite.com
***************************************************************************/
#include "Private.h"
#include "Cylinder.h"
#include "Polygon.h"
Cylinder::Cylinder(float fSize, int sides, float fR, float fG, float fB, float fA, bool bTop) : Shape3D(sides+sides, sides+2) {
if (sides < 3) sides = 3;
Polygon3D * p;
// First ring of vertices.
{ for (float a=0; a<sides; ++a) {
this->add(EMath::emSin(a/sides)*fSize/2, (float)fSize/2 , EMath::emCos(a/sides)*fSize/2,
fR, fG, fB, fA, 0.0f, 0.0f);
} }
// Second ring.
{ for (float a=0; a<sides; ++a) {
this->add(EMath::emSin(a/sides)*fSize/2, (float)-fSize/2, EMath::emCos(a/sides)*fSize/2,
fR, fG, fB, fA, 0.0f, 0.0f);
} }
// Add vertices.
// The ring of polygons.
{ for (int a=0; a<sides-1; ++a) {
p = new Polygon3D(this, 4);
p->add(a);
p->add(a+1);
p->add(a+sides+1);
p->add(a+sides);
this->add(p);
} }
p = new Polygon3D(this, 4);
p->add(sides-1);
p->add(0);
p->add(sides);
p->add(sides+sides-1);
this->add(p);
// Top
if (bTop) {
p = new Polygon3D(this, sides);
for (int a=sides-1; a>=0; --a) {
p->add(a);
}
this->add(p);
// Bottom
p = new Polygon3D(this, sides);
{ for (int a=sides; a<sides+sides; ++a) {
p->add(a);
} }
this->add(p);
}
this->countNormals();
}
|
