subplane.c
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/**************************************************************************
* *
* Copyright (C) 1995, Silicon Graphics, Inc. *
* *
* These coded instructions, statements, and computer programs contain *
* unpublished proprietary information of Silicon Graphics, Inc., and *
* are protected by Federal copyright law. They may not be disclosed *
* to third parties or copied or duplicated in any form, in whole or *
* in part, without the prior written consent of Silicon Graphics, Inc. *
* *
*************************************************************************/
#include <ultra64.h>
#include "block.h"
#include "subplane.h"
int PlaneDivisions[2] = {0, 0};
int PlaneAxisPoints[2] = {0, 0};
int CurrentPlaneAxis = 0;
int NumPlanePolys;
float PlaneDivisionArray[2][MAXPLANEAXISPOINTS];
Vtx ColorPlane_vtx[MAXPLANEVERTICES];
Vtx NormalPlane_vtx[MAXPLANEVERTICES];
Vtx BoxColorVertices[16];
Vtx BoxNormalVertices[16];
int PlaneVertexColor[8][3] =
{
0xff, 0, 0,
0, 0x7f, 0,
0, 0, 0xff,
0, 0, 0,
0, 0, 0xff,
0, 0, 0,
0xff, 0, 0,
0, 0x7f, 0,
};
int PlaneVertexNormal[8][3] =
{
0, 127, 0,
0, 127, 0,
0, 127, 0,
0, 127, 0,
0, 127, 0,
0, 127, 0,
0, 127, 0,
0, 127, 0,
};
float PlaneMinMax[3][2] =
{
PLANEMINX, PLANEMAXX,
PLANEMINY, PLANEMAXY,
PLANEMINZ, PLANEMAXZ
};
int NumPlaneVertices;
int NumSubPlanes;
struct PlaneVertexEntry
{
float Coordinates[2];
} PlaneVertexArray[MAXPLANEVERTICES];
struct SubPlaneEntry
{
int Index[4];
} SubPlaneArray[MAXSUBPLANES];
void CreatePlaneAxisDivisions(void)
{
int i, j;
for (i=0; i<2; i++)
{
PlaneAxisPoints[i] = 2 * (PlaneDivisions[i] + 1);
/* Fill out endpoints first */
PlaneDivisionArray[i][0] = PlaneMinMax[i << 1][0];
PlaneDivisionArray[i][PlaneAxisPoints[i]-1] = PlaneMinMax[i << 1][1];
for (j=0; j<PlaneDivisions[i]; j++)
{
PlaneDivisionArray[i][j*2+1] =
PlaneDivisionArray[i][j*2+2] =
(PlaneMinMax[i << 1][0] +
(PlaneMinMax[i << 1][1] - PlaneMinMax[i << 1][0]) /
(PlaneDivisions[i] + 1.0) * (j+1.0));
}
}
}
void CreatePlaneVertexArray(void)
{
int i;
/* Now we compute the vertex array */
NumPlaneVertices = PlaneAxisPoints[0] * PlaneAxisPoints[1];
for (i=0; i<2*NumPlaneVertices; i++)
{
PlaneVertexArray[i/2].Coordinates[i%2] =
PlaneDivisionArray[i%2][(i%2==0) ? (i/2) % PlaneAxisPoints[0] :
(((i/2) / PlaneAxisPoints[0]) % PlaneAxisPoints[1])];
}
}
void KnitSubPlanes(void)
{
int i, j, k;
int PlaneIndexPointer, BaseVertex;
NumSubPlanes = NumPlaneVertices / 4;
PlaneIndexPointer = 0;
for (j=0; j<PlaneAxisPoints[1]; j+=2)
{
for (i=0; i<PlaneAxisPoints[0]; i+=2)
{
BaseVertex = j*PlaneAxisPoints[0] + i;
SubPlaneArray[PlaneIndexPointer].Index[0] = BaseVertex;
SubPlaneArray[PlaneIndexPointer].Index[1] = BaseVertex + 1;
SubPlaneArray[PlaneIndexPointer].Index[2] = BaseVertex + 1 + PlaneAxisPoints[0];
SubPlaneArray[PlaneIndexPointer].Index[3] = BaseVertex + PlaneAxisPoints[0];
PlaneIndexPointer++;
}
}
}
void CreatePlaneSuperVertices(void)
{
int VertexIndexPointer, i, j;
VertexIndexPointer = 0;
for (i=0; i<NumSubPlanes; i++)
{
for (j=0; j<4; j++)
{
V(ColorPlane_vtx + VertexIndexPointer,
(int) (PlaneVertexArray[SubPlaneArray[i].Index[j]].Coordinates[0] +
(PlaneVertexArray[SubPlaneArray[i].Index[j]].Coordinates[0] > 0 ? 0.5 : -0.5)),
PlaneMinMax[1][0],
(int) (PlaneVertexArray[SubPlaneArray[i].Index[j]].Coordinates[1] +
(PlaneVertexArray[SubPlaneArray[i].Index[j]].Coordinates[1] > 0 ? 0.5 : -0.5)),
0,
((j==0) | (j==3)) ? (0 << 6) : (63 << 6),
((j==0) | (j==1)) ? (0 << 6) : (255 << 6),
PlaneVertexColor[j][0], PlaneVertexColor[j][1], PlaneVertexColor[j][2], 0xff);
V(NormalPlane_vtx + VertexIndexPointer,
(int) (PlaneVertexArray[SubPlaneArray[i].Index[j]].Coordinates[0] +
(PlaneVertexArray[SubPlaneArray[i].Index[j]].Coordinates[0] > 0 ? 0.5 : -0.5)),
PlaneMinMax[1][0],
(int) (PlaneVertexArray[SubPlaneArray[i].Index[j]].Coordinates[1] +
(PlaneVertexArray[SubPlaneArray[i].Index[j]].Coordinates[1] > 0 ? 0.5 : -0.5)),
0,
((j==0) | (j==3)) ? (0 << 6) : (63 << 6),
((j==0) | (j==1)) ? (0 << 6) : (255 << 6),
PlaneVertexNormal[j][0], PlaneVertexNormal[j][1], PlaneVertexNormal[j][2], 0xff);
VertexIndexPointer++;
}
}
}
void CreateBoxVertices(void)
{
/* Create color vertices */
V(BoxColorVertices + 0, PlaneMinMax[0][0], PlaneMinMax[1][1], PlaneMinMax[2][0], 0, 0 << 6, 0 << 6, 0, 0xff, 0, 0xff);
V(BoxColorVertices + 1, PlaneMinMax[0][1], PlaneMinMax[1][1], PlaneMinMax[2][0], 0, 63 << 6, 0 << 6, 0, 0, 0, 0xff);
V(BoxColorVertices + 2, PlaneMinMax[0][1], PlaneMinMax[1][1], PlaneMinMax[2][1], 0, 63 << 6, 255 << 6, 0, 0, 0xff, 0xff);
V(BoxColorVertices + 3, PlaneMinMax[0][0], PlaneMinMax[1][1], PlaneMinMax[2][1], 0, 0 << 6, 255 << 6, 0xff, 0, 0, 0xff);
V(BoxColorVertices + 4, PlaneMinMax[0][0], PlaneMinMax[1][0], PlaneMinMax[2][0], 0, 0 << 6, 63 << 6, 0, 0xff, 0, 0xff);
V(BoxColorVertices + 5, PlaneMinMax[0][0], PlaneMinMax[1][1], PlaneMinMax[2][0], 0, 0 << 6, 0 << 6, 0, 0, 0, 0xff);
V(BoxColorVertices + 6, PlaneMinMax[0][0], PlaneMinMax[1][1], PlaneMinMax[2][1], 0, 255 << 6, 0 << 6, 0, 0, 0xff, 0xff);
V(BoxColorVertices + 7, PlaneMinMax[0][0], PlaneMinMax[1][0], PlaneMinMax[2][1], 0, 255 << 6, 63 << 6, 0xff, 0, 0, 0xff);
V(BoxColorVertices + 8, PlaneMinMax[0][1], PlaneMinMax[1][0], PlaneMinMax[2][1], 0, 0 << 6, 63 << 6, 0, 0xff, 0, 0xff);
V(BoxColorVertices + 9, PlaneMinMax[0][1], PlaneMinMax[1][1], PlaneMinMax[2][1], 0, 0 << 6, 0 << 6, 0, 0, 0, 0xff);
V(BoxColorVertices + 10, PlaneMinMax[0][1], PlaneMinMax[1][1], PlaneMinMax[2][0], 0, 255 << 6, 0 << 6, 0, 0, 0xff, 0xff);
V(BoxColorVertices + 11, PlaneMinMax[0][1], PlaneMinMax[1][0], PlaneMinMax[2][0], 0, 255 << 6, 63 << 6, 0xff, 0, 0, 0xff);
V(BoxColorVertices + 12, PlaneMinMax[0][1], PlaneMinMax[1][0], PlaneMinMax[2][0], 0, 0 << 6, 63 << 6, 0, 0xff, 0, 0xff);
V(BoxColorVertices + 13, PlaneMinMax[0][1], PlaneMinMax[1][1], PlaneMinMax[2][0], 0, 0 << 6, 0 << 6, 0, 0, 0, 0xff);
V(BoxColorVertices + 14, PlaneMinMax[0][0], PlaneMinMax[1][1], PlaneMinMax[2][0], 0, 63 << 6, 0 << 6, 0, 0, 0xff, 0xff);
V(BoxColorVertices + 15, PlaneMinMax[0][0], PlaneMinMax[1][0], PlaneMinMax[2][0], 0, 63 << 6, 63 << 6, 0xff, 0, 0, 0xff);
/* Create normal vertices */
V(BoxNormalVertices + 0, PlaneMinMax[0][0], PlaneMinMax[1][1], PlaneMinMax[2][0], 0, 0 << 6, 0 << 6, 0, -128, 0, 0xff);
V(BoxNormalVertices + 1, PlaneMinMax[0][1], PlaneMinMax[1][1], PlaneMinMax[2][0], 0, 63 << 6, 0 << 6, 0, 0, 0, 0xff);
V(BoxNormalVertices + 2, PlaneMinMax[0][1], PlaneMinMax[1][1], PlaneMinMax[2][1], 0, 63 << 6, 255 << 6, 0, 0, 0, 0xff);
V(BoxNormalVertices + 3, PlaneMinMax[0][0], PlaneMinMax[1][1], PlaneMinMax[2][1], 0, 0 << 6, 255 << 6, 0, 0, 0, 0xff);
V(BoxNormalVertices + 4, PlaneMinMax[0][0], PlaneMinMax[1][0], PlaneMinMax[2][0], 0, 0 << 6, 63 << 6, 127, 0, 0, 0xff);
V(BoxNormalVertices + 5, PlaneMinMax[0][0], PlaneMinMax[1][1], PlaneMinMax[2][0], 0, 0 << 6, 0 << 6, 0, 0, 0, 0xff);
V(BoxNormalVertices + 6, PlaneMinMax[0][0], PlaneMinMax[1][1], PlaneMinMax[2][1], 0, 255 << 6, 0 << 6, 0, 0, 0, 0xff);
V(BoxNormalVertices + 7, PlaneMinMax[0][0], PlaneMinMax[1][0], PlaneMinMax[2][1], 0, 255 << 6, 63 << 6, 0, 0, 0, 0xff);
V(BoxNormalVertices + 8, PlaneMinMax[0][1], PlaneMinMax[1][0], PlaneMinMax[2][1], 0, 0 << 6, 63 << 6, -128, 0, 0, 0xff);
V(BoxNormalVertices + 9, PlaneMinMax[0][1], PlaneMinMax[1][1], PlaneMinMax[2][1], 0, 0 << 6, 0 << 6, 0, 0, 0, 0xff);
V(BoxNormalVertices + 10, PlaneMinMax[0][1], PlaneMinMax[1][1], PlaneMinMax[2][0], 0, 255 << 6, 0 << 6, 0, 0, 0, 0xff);
V(BoxNormalVertices + 11, PlaneMinMax[0][1], PlaneMinMax[1][0], PlaneMinMax[2][0], 0, 255 << 6, 63 << 6, 0, 0, 0, 0xff);
V(BoxNormalVertices + 12, PlaneMinMax[0][1], PlaneMinMax[1][0], PlaneMinMax[2][0], 0, 0 << 6, 63 << 6, 0, 0, 127, 0xff);
V(BoxNormalVertices + 13, PlaneMinMax[0][1], PlaneMinMax[1][1], PlaneMinMax[2][0], 0, 0 << 6, 0 << 6, 0, 0, 0, 0xff);
V(BoxNormalVertices + 14, PlaneMinMax[0][0], PlaneMinMax[1][1], PlaneMinMax[2][0], 0, 63 << 6, 0 << 6, 0, 0, 0, 0xff);
V(BoxNormalVertices + 15, PlaneMinMax[0][0], PlaneMinMax[1][0], PlaneMinMax[2][0], 0, 63 << 6, 63 << 6, 0, 0, 0, 0xff);
}
void CreateSubPlanes(void)
{
CreatePlaneAxisDivisions();
CreatePlaneVertexArray();
KnitSubPlanes();
CreatePlaneSuperVertices();
CreateBoxVertices();
}
void PlaneDL(int Offset)
{
gSP1Triangle(glistp++, Offset+2, Offset+1, Offset+0, 0);
gSP1Triangle(glistp++, Offset+3, Offset+2, Offset+0, 0);
}
void WriteSuperPlaneDisplayList(void)
{
int PlaneIndexPointer, i;
PlaneIndexPointer = 0;
/*
* The texture scaling parameters are .16 format. In order to
* get an exact texture scale of 1.0, we scale above by 2.0, and
* scale down here by 0.5
*/
for (i=0; i<NumSubPlanes/4 ; i++)
{
gSPVertex(glistp++, ((ShadingMode == LIGHTING) ? NormalPlane_vtx : ColorPlane_vtx) + i*16, 16, 0);
PlaneDL( 0);
PlaneDL( 4);
PlaneDL( 8);
PlaneDL(12);
PlaneIndexPointer += 4;
}
if (PlaneIndexPointer != NumSubPlanes)
{
if (NumSubPlanes - PlaneIndexPointer == 1)
{
gSPVertex(glistp++, ((ShadingMode == LIGHTING) ? NormalPlane_vtx : ColorPlane_vtx) + i*16, 4, 0);
PlaneDL(0);
}
else if (NumSubPlanes - PlaneIndexPointer == 2)
{
gSPVertex(glistp++, ((ShadingMode == LIGHTING) ? NormalPlane_vtx : ColorPlane_vtx) + i*16, 8, 0);
PlaneDL(0);
PlaneDL(4);
}
else
{
gSPVertex(glistp++, ((ShadingMode == LIGHTING) ? NormalPlane_vtx : ColorPlane_vtx) + i*16, 12, 0);
PlaneDL(0);
PlaneDL(4);
PlaneDL(8);
}
}
}
void WriteOtherPlanesDisplayList(void)
{
gSPVertex(glistp++, (ShadingMode == LIGHTING) ? BoxNormalVertices : BoxColorVertices, 16, 0);
gSP1Triangle(glistp++, 0, 1, 2, 0);
gSP1Triangle(glistp++, 0, 2, 3, 0);
gSP1Triangle(glistp++, 4, 5, 6, 0);
gSP1Triangle(glistp++, 4, 6, 7, 0);
gSP1Triangle(glistp++, 8, 9, 10, 0);
gSP1Triangle(glistp++, 8, 10, 11, 0);
gSP1Triangle(glistp++, 12, 13, 14, 0);
gSP1Triangle(glistp++, 12, 14, 15, 0);
}
#include "../Texture/RGBA16brick.h"
#include "../Texture/RGBA16brickMM.h"
void CreatePlanes(void)
{
if (!UseGlobalTransforms)
{
guTranslate(&dynamicp->TranslateIn, 0.0F, 0.0F, 0.0F);
gSPMatrix(glistp++, OS_K0_TO_PHYSICAL(&(dynamic.TranslateIn)),
G_MTX_MODELVIEW|G_MTX_LOAD|G_MTX_NOPUSH);
}
if (UseTextureMode)
{
if (UseTextureMode == 2)
{
gSPDisplayList(glistp++, RGBA16brickMM_dl);
}
else
{
gDPLoadTextureBlock(glistp++, RGBA16brick, G_IM_FMT_RGBA,
G_IM_SIZ_16b, 32, 32, 0,
G_TX_WRAP | G_TX_NOMIRROR, G_TX_WRAP | G_TX_NOMIRROR,
5, 5, G_TX_NOLOD, G_TX_NOLOD);
}
}
WriteSuperPlaneDisplayList();
WriteOtherPlanesDisplayList();
}