void msm6255_device::update_text(bitmap_ind16 &bitmap, const rectangle &cliprect)
{
UINT8 hn = (m_hnr & HNR_HN_MASK) + 1;
UINT8 vp = (m_pr & PR_VP_MASK) + 1;
UINT8 nx = (m_dvr & DVR_DN_MASK) + 1;
UINT16 sar = (m_sur << 8) | m_slr;
int sy, y;
update_cursor();
for (sy = 0; sy < nx; sy++)
{
for (y = 0; y < vp; y++)
{
// draw upper half scanline
UINT16 ma = sar + ((sy * vp) + y) * hn;
draw_scanline(bitmap, cliprect, (sy * vp) + y, ma, y);
// draw lower half scanline
ma = sar + (((sy + nx) * vp) + y) * hn;
draw_scanline(bitmap, cliprect, (sy * vp) + y, ma, y);
}
}
}
/*:::::*/
static void draw_ellipse(FB_GFXCTX *ctx, int x, int y, float a, float b, unsigned int color, int fill)
{
int d, x1, y1, x2, y2;
long long dx, dy, aq, bq, r, rx, ry;
char filled[ctx->view_h];
x1 = x - a;
x2 = x + a;
y1 = y2 = y;
fb_hMemSet(filled, 0, ctx->view_h);
if (!b) {
draw_scanline(ctx, y, x1, x2, color, TRUE, filled);
return;
}
else
draw_scanline(ctx, y, x1, x2, color, fill, filled);
aq = a * a;
bq = b * b;
dx = aq << 1;
dy = bq << 1;
r = a * bq;
rx = r << 1;
ry = 0;
d = a;
while (d > 0) {
if (r > 0) {
y1++;
y2--;
ry += dx;
r -= ry;
}
if (r <= 0) {
d--;
x1++;
x2--;
rx -= dy;
r += rx;
}
draw_scanline(ctx, y1, x1, x2, color, fill, filled);
draw_scanline(ctx, y2, x1, x2, color, fill, filled);
}
}
void msm6255_device::update_graphics(bitmap_ind16 &bitmap, const rectangle &cliprect)
{
UINT8 hn = (m_hnr & HNR_HN_MASK) + 1;
UINT8 nx = (m_dvr & DVR_DN_MASK) + 1;
UINT16 sar = (m_sur << 8) | m_slr;
int y;
m_cursor = 0;
m_frame = 0;
for (y = 0; y < nx; y++)
{
// draw upper half scanline
UINT16 ma = sar + (y * hn);
draw_scanline(bitmap, cliprect, y, ma);
// draw lower half scanline
ma = sar + ((y + nx) * hn);
draw_scanline(bitmap, cliprect, y + nx, ma);
}
}
static void draw_ellipse
(
FB_GFXCTX *ctx,
int x,
int y,
float a,
float b,
unsigned int color,
int fill,
int *top,
int *bottom
)
{
int d, x1, y1, x2, y2;
long long dx, dy, aq, bq, r, rx, ry;
char filled[ctx->view_h];
x1 = x - a;
x2 = x + a;
y1 = y2 = y;
fb_hMemSet(filled, 0, ctx->view_h);
if (!b) {
draw_scanline(ctx, y, x1, x2, color, TRUE, filled);
*top = y;
*bottom = y;
return;
}
draw_scanline(ctx, y, x1, x2, color, fill, filled);
aq = a * a;
bq = b * b;
dx = aq << 1;
dy = bq << 1;
r = a * bq;
rx = r << 1;
ry = 0;
d = a;
while (d > 0) {
if (r > 0) {
y1++;
y2--;
ry += dx;
r -= ry;
}
if (r <= 0) {
d--;
x1++;
x2--;
rx -= dy;
r += rx;
}
draw_scanline(ctx, y1, x1, x2, color, fill, filled);
draw_scanline(ctx, y2, x1, x2, color, fill, filled);
}
/* Tell caller exactly which rows were drawn so the SET_DIRTY() will be
correct */
*top = y2;
*bottom = y1;
}
/*======== void draw_polygons() ==========
Inputs: struct matrix *polygons
screen s
color c
Returns:
04/16/13 13:13:27
jdyrlandweaver
====================*/
void draw_polygons( struct matrix *polygons, screen s, color c ) {
// ALL VARIABLES USED:
int i, j;
//int moe, curly, larry;
int isCaseTwo = 0;
double currentXFor, currentXTemp, currentY, currentZFor, currentZTemp;
color cc;
// INITIAL NAMES GIVEN TO COORDINATES OF THREE POINTS BEING EXAMINED
double x1, x2, x3, y1, y2, y3, z1, z2, z3;
//double drawX0, drawX1, drawZ0, drawZ1;
// AMONG THE THREE POINTS, BOTTOM, MIDDLE, TOP
double whyB, whyM, whyT;
double exB, exM, exT;
double zeeB, zeeM, zeeT;
double delForeverX, delTempX; // delta zero and delta one in x
double delForeverZ, delTempZ; // delta zero and delta one in z
int x, z, d, dx, dz;
double colorR, colorG, colorB;
double maxY; // FOR LINES BETWEEN VERTICES OF A POLYGON
// CHECK IF POLYGONS MATRIX IS VALID FOR DRAWING POLYGONS
if ( polygons->lastcol < 3 ) {
printf("Need at least 3 points to draw a polygon!\n");
return;
}
printf("\n\n");
// FOR LOOP TO GO THROUGH POLYGONS MATRIX, 3 POINTS AT A TIME
for( i=0; i < polygons->lastcol-2; i+=3 ) {
//MAKES EACH POLYGON A DIFFERENT COLOR, FOR TESTING
//ambi.red = (ambi.red - 50) % 256;
//ambi.green = (ambi.green + 75) % 256;
//ambi.blue = (ambi.blue - 36) % 256;
// CHECK IF POLYGON FACES VIEWER TO COMPLETE BACK FACE CULLING
if ( calculate_dot( polygons, i ) >= 0 ) {
// printf("drawing polygon %d\n", i/3);
cc = allLight(polygons, i);/////////////////////////////////////////
// SET COORDINATES TO RESPECTIVE POLYGON MATRIX VALUES
x1 = polygons->m[0][i];
y1 = polygons->m[1][i];
z1 = polygons->m[2][i];
x2 = polygons->m[0][i+1];
y2 = polygons->m[1][i+1];
z2 = polygons->m[2][i+1];
x3 = polygons->m[0][i+2];
y3 = polygons->m[1][i+2];
z3 = polygons->m[2][i+2];
// DRAW EDGES OF POLYGON MATRIX
/*
colorR = ambi.red;
colorG = ambi.green;
colorB = ambi.blue;
ambi.red = 0;
ambi.green = 0;
ambi.blue = 0;
draw_line( polygons->m[0][i],
polygons->m[1][i],
polygons->m[0][i+1],
polygons->m[1][i+1],
s, ambi);
draw_line(polygons->m[0][i+1],
polygons->m[1][i+1],
polygons->m[0][i+2],
polygons->m[1][i+2],
s, ambi);
draw_line( polygons->m[0][i+2],
polygons->m[1][i+2],
polygons->m[0][i],
polygons->m[1][i],
s, ambi);
ambi.red = colorR;
ambi.green = colorG;
ambi.blue = colorB;
*/
/*
draw_line( polygons->m[0][i],
polygons->m[1][i],
polygons->m[0][i+1],
polygons->m[1][i+1],
s, c);
draw_line( polygons->m[0][i+1],
polygons->m[1][i+1],
polygons->m[0][i+2],
polygons->m[1][i+2],
s, c);
draw_line( polygons->m[0][i+2],
polygons->m[1][i+2],
polygons->m[0][i],
polygons->m[1][i],
s, c);
*/
// DETERMINE IF TRIANGLE IS OF TYPE ONE
if((y1 != y2) && (y2 != y3) && (y3 != y1)) {
// Establishes bottom, middle, top y-coordinates in case 1 triangles
// AS INITIAL STEP, MAKE BOTTOM COORDINATES CORRESPOND TO x1,y1,z1
whyB = y1;
exB = x1;
zeeB = z1;
// IF y2 IS LESS THAN whyB, SWITCH THE BOTTOM COORDINATES TO x2,y2,z2
if((y2 < whyB)) {
whyB = y2;
exB = x2;
zeeB = z2;
}
// IF y3 IS LESS THAN whyB, SWITCH THE BOTTOM COORDINATES TO x3,y3,z3
if((y3 < whyB)) {
whyB = y3;
exB = x3;
zeeB = z3;
}
// AS INITIAL STEP, MAKE TOP COORDINATES CORRESPOND TO x1,y1,z1
whyT = y1;
exT = x1;
zeeT = z1;
// IF y2 IS GREATER THAN whyT, SWITCH THE TOP COORDINATES TO x2,y2,z2
if((y2 > whyT)) {
whyT = y2;
exT = x2;
zeeT = z2;
}
// IF y3 IS GREATER THAN whyT, SWITCH THE TOP COORDINATES TO x3,y3,z3
if((y3 > whyT)) {
whyT = y3;
exT = x3;
zeeT = z3;
}
// IF y1 IS BETWEEN whyB AND whyT, MAKE IT whyM
if((y1 > whyB) && (y1 < whyT)) {
whyM = y1;
exM = x1;
zeeM = z1;
}
// IF y2 IS BETWEEN whyB AND whyT, MAKE IT whyM
if((y2 > whyB) && (y2 < whyT)) {
whyM = y2;
exM = x2;
zeeM = z2;
}
// IF y3 IS BETWEEN whyB AND whyT, MAKE IT whyM
if((y3 > whyB) && (y3 < whyT)) {
whyM = y3;
exM = x3;
zeeM = z3;
}
// SET THE SLOPE FOR THE x0 AND THE TEMPORARY x1
delForeverX = (exT - exB) / (whyT - whyB);
delTempX = (exM - exB) / (whyM - whyB);
delForeverZ = (zeeT - zeeB) / (whyT - whyB);
delTempZ = (zeeM - zeeB) / (whyM - whyB);
// SET THE STARTING y VALUE (currentY) TO whyB
currentY = whyB;
// WHILE LOOP THAT STOPS AT whyM, THE MIDDLE VERTEX
while(currentY <= whyM) {
// SET THE TWO xS USING POINT-SLOPE FORM
currentXFor = exB + delForeverX * (currentY - whyB);
currentXTemp = exB + delTempX * (currentY - whyB);
currentZFor = zeeB + delForeverZ * (currentY - whyB);
currentZTemp = zeeB + delTempZ * (currentY - whyB);
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!
//x = (int)currentXFor;
//z = (int)currentZFor;
x = currentXFor;
z = currentZFor;
//swap points so we're always drawing left to right
if ( currentXFor > currentXTemp ) {
//x = (int)currentXTemp;
x = currentXTemp;
//z = (int)currentZTemp;
z = currentZTemp;
//currentXTemp = (int)currentXFor; // signifies x1
currentXTemp = currentXFor;
//currentZTemp = (int)currentZFor; // signifies y1
currentZTemp = currentZFor;
}
draw_scanline(x, z, currentXTemp, currentY, currentZTemp, s, cc);
//draw_line(currentXFor, currentY, currentXTemp, currentY, s, c);
currentY++;
}
while((currentY > whyM) && (currentY <= whyT)) {
delTempX = (exT - exM) / (whyT - whyM);
currentXFor = exB + delForeverX * (currentY - whyB);
currentXTemp = exM + delTempX * (currentY - whyM);
delTempZ = (zeeT - zeeM) / (whyT - whyM);
currentZFor = zeeB + delForeverZ * (currentY - whyB);
currentZTemp = zeeM + delTempZ * (currentY - whyM);
x = currentXFor;
z = currentZFor;
//swap points so we're always drawing left to right
if ( currentXFor > currentXTemp ) {
//x = (int)currentXTemp;
x = currentXTemp;
//z = (int)currentZTemp;
z = currentZTemp;
//currentXTemp = (int)currentXFor; // signifies x1
currentXTemp = currentXFor;
//currentZTemp = (int)currentZFor; // signifies y1
currentZTemp = currentZFor;
}
draw_scanline(x, z, currentXTemp, currentY, currentZTemp, s, cc);
//draw_line(currentXFor, currentY, currentXTemp, currentY, s, c);
currentY++;
}
}
if((y1 == y2) || (y2 == y3) || (y3 == y1)) {
if(y1 == y2) {
if(y1 >= y3) {
isCaseTwo = 1;
whyB = y3;
exB = x3;
whyT = y1;
exT = x1;
whyM = y2;
exM = x2;
}
if(y1 < y3) {
isCaseTwo = 0;
whyT = y3;
whyB = y1;
whyM = y2;
exT = x3;
exB = x1;
exM = x2;
}
}
if(y2 == y3) {
if(y2 >= y1) {
isCaseTwo = 1;
whyB = y1;
whyT = y2;
whyM = y3;
exB = x1;
exT = x2;
exM = x3;
}
if(y2 < y1) {
isCaseTwo = 0;
whyB = y2;
whyT = y1;
whyM = y3;
exB = x2;
exT = x1;
exM = x3;
}
}
if(y3 == y1) {
if(y2 > y3) {
isCaseTwo = 0;
whyT = y2;
whyB = y3;
whyM = y1;
exT = x2;
exB = x3;
exM = x1;
}
if(y2 <= y3) {
isCaseTwo = 1;
whyT = y3;
whyM = y1;
whyB = y2;
exT = x3;
exM = x1;
exB = x2;
}
}
// CASES THAT HAVE NOT BEEN CHANGED YET:
if(isCaseTwo == 0) {
currentY = whyB;
delForeverX = (exT - exB) / (whyT - whyB);
delTempX = (exT - exM) / (whyT - whyM);
while(currentY <= whyT) {
currentXFor = exB + delForeverX * (currentY - whyB);
currentXTemp = exM + delTempX * (currentY - whyM);
// IN THE ZONE AGAIN
x = currentXFor;
z = currentZFor;
//swap points so we're always drawing left to right
if ( currentXFor > currentXTemp ) {
//x = (int)currentXTemp;
x = currentXTemp;
//z = (int)currentZTemp;
z = currentZTemp;
//currentXTemp = (int)currentXFor; // signifies x1
currentXTemp = currentXFor;
//currentZTemp = (int)currentZFor; // signifies y1
currentZTemp = currentZFor;
}
draw_scanline(x, z, currentXTemp, currentY, currentZTemp, s, cc);
//draw_line(currentXFor, currentY, currentXTemp, currentY, s, c);
currentY++;
}
}
if(isCaseTwo == 1) {
currentY = whyB;
delForeverX = (exT - exB) / (whyT - whyB);
delTempX = (exM - exB) / (whyM - whyB);
while(currentY <= whyT) {
currentXFor = exB + delForeverX * (currentY - whyB);
currentXTemp = exB + delTempX * (currentY - whyB);
// MORE OF THE ZONE
x = currentXFor;
z = currentZFor;
//swap points so we're always drawing left to right
if ( currentXFor > currentXTemp ) {
//x = (int)currentXTemp;
x = currentXTemp;
//z = (int)currentZTemp;
z = currentZTemp;
//currentXTemp = (int)currentXFor; // signifies x1
currentXTemp = currentXFor;
//currentZTemp = (int)currentZFor; // signifies y1
currentZTemp = currentZFor;
}
draw_scanline(x, z, currentXTemp, currentY, currentZTemp, s, cc);
//draw_line(currentXFor, currentY, currentXTemp, currentY, s, c);
currentY++;
}
}
}
colorR = cc.red;
colorG = cc.green;
colorB = cc.blue;
/*
cc.red = 0;
cc.green = 0;
cc.blue = 0;
*/
draw_zL( polygons->m[0][i],
polygons->m[1][i],
polygons->m[2][i],
polygons->m[0][i+1],
polygons->m[1][i+1],
polygons->m[2][i+1],
s, cc);
draw_zL( polygons->m[0][i+1],
polygons->m[1][i+1],
polygons->m[2][i+1],
polygons->m[0][i+2],
polygons->m[1][i+2],
polygons->m[2][i+2],
s, cc);
draw_zL( polygons->m[0][i+2],
polygons->m[1][i+2],
polygons->m[2][i+2],
polygons->m[0][i],
polygons->m[1][i],
polygons->m[2][i],
s, cc);
cc.red = colorR;
cc.green = colorG;
cc.blue = colorB;
/*
cc.red = ambiRed;
cc.green = ambiGreen;
cc.blue = ambiBlue;
*/
}
}
}
