Misc/abrash-black-book
Watch
1
0
Fork
You've already forked abrash-black-book
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
abrash-black-book/52-05.html
James Gregory 4eef8b2919 Move everything into one directory, update links
2013-12-30 12:21:49 +11:00

191 lines
7.7 KiB
HTML
Raw Blame History

<HTML>
<HEAD>
<META name=vsisbn content="1576101746">
<META name=vstitle content="Michael Abrash's Graphics Programming Black Book, Special Edition">
<META name=vsauthor content="Michael Abrash">
<META name=vspublisher content="The Coriolis Group">
<META name=vspubdate content="07/01/97">
<META name=vscategory content="Web and Software Development: Game Development,Web and Software Development: Graphics and Multimedia Development">
<TITLE>Michael Abrash's Graphics Programming Black Book Special Edition: Fast 3-D Animation: Meet X-Sharp</TITLE>
<!-- HEADER -->
<!-- Empty Reference Subhead -->
<!--ISBN=1576101746//-->
<!--TITLE=Michael Abrash's Graphics Programming Black Book Special Edition//-->
<!--AUTHOR=Michael Abrash//-->
<!--PUBLISHER=The Coriolis Group, Inc.//-->
<!--CHAPTER=52//-->
<!--PAGES=979-981//-->
<!--UNASSIGNED1//-->
<!--UNASSIGNED2//--></HEAD><BODY LINK=#0000FF ALINK=#000099 VLINK=#0000FF BGCOLOR=#FFFFFF>
<CENTER>
<TABLE BORDER>
<TR>
<TD><A HREF="52-04.html">Previous</A></TD>
<TD><A HREF="index.html">Table of Contents</A></TD>
<TD><A HREF="52-06.html">Next</A></TD>
</TR>
</TABLE>
</CENTER>
<P><BR></P>
<P><B>LISTING 52.8 L52-8.C</B></P>
<!-- CODE //-->
<PRE>
/* Initializes the cubes and adds them to the object list. */
#include &ltstdlib.h&gt
#include &ltmath.h&gt
#include &#147;polygon.h&#148;
#define ROT_6 (M_PI / 30.0) /* rotate 6 degrees at a time */
#define ROT_3 (M_PI / 60.0) /* rotate 3 degrees at a time */
#define ROT_2 (M_PI / 90.0) /* rotate 2 degrees at a time */
#define NUM_CUBES 12 /* # of cubes */
Point3 CubeVerts[NUM_CUBE_VERTS]; /* set elsewhere, from floats */
/* vertex indices for individual cube faces */
static int Face1[] = {1,3,2,0};
static int Face2[] = {5,7,3,1};
static int Face3[] = {4,5,1,0};
static int Face4[] = {3,7,6,2};
static int Face5[] = {5,4,6,7};
static int Face6[] = {0,2,6,4};
static int *VertNumList[]={Face1, Face2, Face3, Face4, Face5, Face6};
static int VertsInFace[]={ sizeof(Face1)/sizeof(int),
sizeof(Face2)/sizeof(int), sizeof(Face3)/sizeof(int),
sizeof(Face4)/sizeof(int), sizeof(Face5)/sizeof(int),
sizeof(Face6)/sizeof(int) };
/* X, Y, Z rotations for cubes */
static RotateControl InitialRotate[NUM_CUBES] = {
{0.0,ROT_6,ROT_6},{ROT_3,0.0,ROT_3},{ROT_3,ROT_3,0.0},
{ROT_3,-ROT_3,0.0},{-ROT_3,ROT_2,0.0},{-ROT_6,-ROT_3,0.0},
{ROT_3,0.0,-ROT_6},{-ROT_2,0.0,ROT_3},{-ROT_3,0.0,-ROT_3},
{0.0,ROT_2,-ROT_2},{0.0,-ROT_3,ROT_3},{0.0,-ROT_6,-ROT_6},};
static MoveControl InitialMove[NUM_CUBES] = {
{0,0,80,0,0,0,0,0,-350},{0,0,80,0,0,0,0,0,-350},
{0,0,80,0,0,0,0,0,-350},{0,0,80,0,0,0,0,0,-350},
{0,0,80,0,0,0,0,0,-350},{0,0,80,0,0,0,0,0,-350},
{0,0,80,0,0,0,0,0,-350},{0,0,80,0,0,0,0,0,-350},
{0,0,80,0,0,0,0,0,-350},{0,0,80,0,0,0,0,0,-350},
{0,0,80,0,0,0,0,0,-350},{0,0,80,0,0,0,0,0,-350}, };
/* face colors for various cubes */
static int Colors[NUM_CUBES][NUM_CUBE_FACES] = {
{15,14,12,11,10,9},{1,2,3,4,5,6},{35,37,39,41,43,45},
{47,49,51,53,55,57},{59,61,63,65,67,69},{71,73,75,77,79,81},
{83,85,87,89,91,93},{95,97,99,101,103,105},
{107,109,111,113,115,117},{119,121,123,125,127,129},
{131,133,135,137,139,141},{143,145,147,149,151,153} };
/* starting coordinates for cubes in world space */
static int CubeStartCoords[NUM_CUBES][3] = {
{100,0,-6000}, {100,70,-6000}, {100,-70,-6000}, {33,0,-6000},
{33,70,-6000}, {33,-70,-6000}, {-33,0,-6000}, {-33,70,-6000},
{-33,-70,-6000},{-100,0,-6000}, {-100,70,-6000}, {-100,-70,-6000}};
/* delay counts (speed control) for cubes */
static int InitRDelayCounts[NUM_CUBES] = {1,2,1,2,1,1,1,1,1,2,1,1};
static int BaseRDelayCounts[NUM_CUBES] = {1,2,1,2,2,1,1,1,2,2,2,1};
static int InitMDelayCounts[NUM_CUBES] = {1,1,1,1,1,1,1,1,1,1,1,1};
static int BaseMDelayCounts[NUM_CUBES] = {1,1,1,1,1,1,1,1,1,1,1,1};
void InitializeCubes()
{
int i, j, k;
PObject *WorkingCube;
for (i=0; i&ltNUM_CUBES; i++) {
if ((WorkingCube = malloc(sizeof(PObject))) == NULL) {
printf(&#147;Couldn't get memory\n&#148;); exit(1); }
WorkingCube-&gtDrawFunc = DrawPObject;
WorkingCube-&gtRecalcFunc = XformAndProjectPObject;
WorkingCube-&gtMoveFunc = RotateAndMovePObject;
WorkingCube-&gtRecalcXform = 1;
for (k=0; k&lt2; k++) {
WorkingCube-&gtEraseRect[k].Left =
WorkingCube-&gtEraseRect[k].Top = 0x7FFF;
WorkingCube-&gtEraseRect[k].Right = 0;
WorkingCube-&gtEraseRect[k].Bottom = 0;
}
WorkingCube-&gtRDelayCount = InitRDelayCounts[i];
WorkingCube-&gtRDelayCountBase = BaseRDelayCounts[i];
WorkingCube-&gtMDelayCount = InitMDelayCounts[i];
WorkingCube-&gtMDelayCountBase = BaseMDelayCounts[i];
/* Set the object-&gtworld xform to none */
for (j=0; j&lt3; j++)
for (k=0; k&lt4; k++)
WorkingCube-&gtXformToWorld[j][k] = INT_TO_FIXED(0);
WorkingCube-&gtXformToWorld[0][0] =
WorkingCube-&gtXformToWorld[1][1] =
WorkingCube-&gtXformToWorld[2][2] =
WorkingCube-&gtXformToWorld[3][3] = INT_TO_FIXED(1);
/* Set the initial location */
for (j=0; j&lt3; j++) WorkingCube-&gtXformToWorld[j][3] =
INT_TO_FIXED(CubeStartCoords[i][j]);
WorkingCube-&gtNumVerts = NUM_CUBE_VERTS;
WorkingCube-&gtVertexList = CubeVerts;
WorkingCube-&gtNumFaces = NUM_CUBE_FACES;
WorkingCube-&gtRotate = InitialRotate[i];
WorkingCube-&gtMove.MoveX = INT_TO_FIXED(InitialMove[i].MoveX);
WorkingCube-&gtMove.MoveY = INT_TO_FIXED(InitialMove[i].MoveY);
WorkingCube-&gtMove.MoveZ = INT_TO_FIXED(InitialMove[i].MoveZ);
WorkingCube-&gtMove.MinX = INT_TO_FIXED(InitialMove[i].MinX);
WorkingCube-&gtMove.MinY = INT_TO_FIXED(InitialMove[i].MinY);
WorkingCube-&gtMove.MinZ = INT_TO_FIXED(InitialMove[i].MinZ);
WorkingCube-&gtMove.MaxX = INT_TO_FIXED(InitialMove[i].MaxX);
WorkingCube-&gtMove.MaxY = INT_TO_FIXED(InitialMove[i].MaxY);
WorkingCube-&gtMove.MaxZ = INT_TO_FIXED(InitialMove[i].MaxZ);
if ((WorkingCube-&gtXformedVertexList =
malloc(NUM_CUBE_VERTS*sizeof(Point3))) == NULL) {
printf(&#147;Couldn't get memory\n&#148;); exit(1); }
if ((WorkingCube-&gtProjectedVertexList =
malloc(NUM_CUBE_VERTS*sizeof(Point3))) == NULL) {
printf(&#147;Couldn't get memory\n&#148;); exit(1); }
if ((WorkingCube-&gtScreenVertexList =
malloc(NUM_CUBE_VERTS*sizeof(Point))) == NULL) {
printf(&#147;Couldn't get memory\n&#148;); exit(1); }
if ((WorkingCube-&gtFaceList =
malloc(NUM_CUBE_FACES*sizeof(Face))) == NULL) {
printf(&#147;Couldn't get memory\n&#148;); exit(1); }
/* Initialize the faces */
for (j=0; j&ltNUM_CUBE_FACES; j++) {
WorkingCube-&gtFaceList[j].VertNums = VertNumList[j];
WorkingCube-&gtFaceList[j].NumVerts = VertsInFace[j];
WorkingCube-&gtFaceList[j].Color = Colors[i][j];
}
ObjectList[NumObjects++] = (Object *)WorkingCube;
}
}
</PRE>
<!-- END CODE //-->
<P><BR></P>
<CENTER>
<TABLE BORDER>
<TR>
<TD><A HREF="52-04.html">Previous</A></TD>
<TD><A HREF="index.html">Table of Contents</A></TD>
<TD><A HREF="52-06.html">Next</A></TD>
</TR>
</TABLE>
</CENTER>
<hr width="90%" size="1" noshade>
<div align="center">
<font face="Verdana,sans-serif" size="1">Graphics Programming Black Book &copy; 2001 Michael Abrash</font>
</div>
<!-- all of the reference materials (books) have the footer and subfoot reveresed -->
<!-- reference_subfoot = footer -->
<!-- reference_footer = subfoot -->
<!-- BEGIN SUB FOOTER -->
</BODY>
</HTML>
<!-- END FOOTER -->
Reference in a new issue View git blame Copy permalink