void PCD8544::plotRect(byte left, byte top, byte right, byte bottom)
{
plotLine(left, top, right, top); //top
plotLine(left, bottom, right, bottom); //bottom
plotLine(right, top, right, bottom); //right
plotLine(left, top, left, bottom); //left
}
// ######################################################################
void ScorbotConsole::updatePlots()
{
itsGraphicsView->setBackgroundBrush(QBrush(Qt::darkGray));
//Clear all previous plots
QList<QGraphicsItem*> items = itsGraphicsScene->items();
for(int i=0; i<items.size(); i++)
{
itsGraphicsScene->removeItem(items[i]);
delete items[i];
}
int textPos = -5000;
int textOffset=500;
QMap<QString, bool>::iterator dataCheckIt = plotDataCheck.begin();
for(; dataCheckIt != plotDataCheck.end(); ++dataCheckIt)
{
if (dataCheckIt.value() && plotData.contains(dataCheckIt.key()))
{
PixRGB<byte> color = plotDataColor[dataCheckIt.key()];
QGraphicsTextItem *text = itsGraphicsScene->addText(dataCheckIt.key());
text->setDefaultTextColor(QColor(color.red(), color.green(), color.blue()));
text->setPos(1, textPos);
text->setFlags(QGraphicsItem::ItemIgnoresTransformations);
textPos+=textOffset;
plotLine(plotData[dataCheckIt.key()], color);
}
}
itsGraphicsScene->addLine(QLineF(0, -5000, 0, 5000), QPen(QColor(128, 0, 0)));
itsGraphicsScene->addLine(QLineF(0, 0, itsMaxPlotLength, 0), QPen(QColor(128, 0, 0)));
itsGraphicsView->fitInView(itsGraphicsScene->itemsBoundingRect());
itsGraphicsView->ensureVisible(itsGraphicsScene->itemsBoundingRect());
itsGraphicsView->centerOn(itsMaxPlotLength/2, 0);
}
void plotCubicBezierSeg(int x0, int y0, double x1, double y1,
double x2, double y2, int x3, int y3)
{ /* plot limited cubic Bezier segment */
int f, fx, fy, leg = 1;
int sx = x0 < x3 ? 1 : -1, sy = y0 < y3 ? 1 : -1; /* step direction */
double xc = -fabs(x0+x1-x2-x3), xa = xc-4*sx*(x1-x2), xb = sx*(x0-x1-x2+x3);
double yc = -fabs(y0+y1-y2-y3), ya = yc-4*sy*(y1-y2), yb = sy*(y0-y1-y2+y3);
double ab, ac, bc, cb, xx, xy, yy, dx, dy, ex, *pxy, EP = 0.01;
/* check for curve restrains */
/* slope P0-P1 == P2-P3 and (P0-P3 == P1-P2 or no slope change) */
assert((x1-x0)*(x2-x3) < EP && ((x3-x0)*(x1-x2) < EP || xb*xb < xa*xc+EP));
assert((y1-y0)*(y2-y3) < EP && ((y3-y0)*(y1-y2) < EP || yb*yb < ya*yc+EP));
if (xa == 0 && ya == 0) { /* quadratic Bezier */
sx = (int) floor((3*x1-x0+1)/2); sy = (int) floor((3*y1-y0+1)/2); /* new midpoint */
return plotQuadBezierSeg(x0,y0, sx,sy, x3,y3);
}
x1 = (x1-x0)*(x1-x0)+(y1-y0)*(y1-y0)+1; /* line lengths */
x2 = (x2-x3)*(x2-x3)+(y2-y3)*(y2-y3)+1;
do { /* loop over both ends */
ab = xa*yb-xb*ya; ac = xa*yc-xc*ya; bc = xb*yc-xc*yb;
ex = ab*(ab+ac-3*bc)+ac*ac; /* P0 part of self-intersection loop? */
f = (int) (ex > 0 ? 1 : sqrt(1+1024/x1)); /* calculate resolution */
ab *= f; ac *= f; bc *= f; ex *= f*f; /* increase resolution */
xy = 9*(ab+ac+bc)/8; cb = 8*(xa-ya); /* init differences of 1st degree */
dx = 27*(8*ab*(yb*yb-ya*yc)+ex*(ya+2*yb+yc))/64-ya*ya*(xy-ya);
dy = 27*(8*ab*(xb*xb-xa*xc)-ex*(xa+2*xb+xc))/64-xa*xa*(xy+xa);
/* init differences of 2nd degree */
xx = 3*(3*ab*(3*yb*yb-ya*ya-2*ya*yc)-ya*(3*ac*(ya+yb)+ya*cb))/4;
yy = 3*(3*ab*(3*xb*xb-xa*xa-2*xa*xc)-xa*(3*ac*(xa+xb)+xa*cb))/4;
xy = xa*ya*(6*ab+6*ac-3*bc+cb); ac = ya*ya; cb = xa*xa;
xy = 3*(xy+9*f*(cb*yb*yc-xb*xc*ac)-18*xb*yb*ab)/8;
if (ex < 0) { /* negate values if inside self-intersection loop */
dx = -dx; dy = -dy; xx = -xx; yy = -yy; xy = -xy; ac = -ac; cb = -cb;
} /* init differences of 3rd degree */
ab = 6*ya*ac; ac = -6*xa*ac; bc = 6*ya*cb; cb = -6*xa*cb;
dx += xy; ex = dx+dy; dy += xy; /* error of 1st step */
for (pxy = &xy, fx = fy = f; x0 != x3 && y0 != y3; ) {
//setPixel(x0,y0); /* plot curve */
do { /* move sub-steps of one pixel */
if (dx > *pxy || dy < *pxy) goto exit; /* confusing values */
y1 = 2*ex-dy; /* save value for test of y step */
if (2*ex >= dx) { /* x sub-step */
fx--; ex += dx += xx; dy += xy += ac; yy += bc; xx += ab;
}
if (y1 <= 0) { /* y sub-step */
fy--; ex += dy += yy; dx += xy += bc; xx += ac; yy += cb;
}
} while (fx > 0 && fy > 0); /* pixel complete? */
if (2*fx <= f) { x0 += sx; fx += f; } /* x step */
if (2*fy <= f) { y0 += sy; fy += f; } /* y step */
if (pxy == &xy && dx < 0 && dy > 0) pxy = &EP; /* pixel ahead valid */
}
exit: xx = x0; x0 = x3; x3 = (int) xx; sx = -sx; xb = -xb; /* swap legs */
yy = y0; y0 = y3; y3 = (int) yy; sy = -sy; yb = -yb; x1 = x2;
} while (leg--); /* try other end */
plotLine(x0,y0, x3,y3); /* remaining part in case of cusp or crunode */
}
void plotQuadBezierSeg(int x0, int y0, int x1, int y1, int x2, int y2)
{
int sx = x2-x1, sy = y2-y1;
long xx = x0-x1, yy = y0-y1, xy; /* relative values for checks */
double dx, dy, err, cur = xx*sy-yy*sx; /* curvature */
assert(xx*sx <= 0 && yy*sy <= 0); /* sign of gradient must not change */
if (sx*(long)sx+sy*(long)sy > xx*xx+yy*yy) { /* begin with longer part */
x2 = x0; x0 = sx+x1; y2 = y0; y0 = sy+y1; cur = -cur; /* swap P0 P2 */
}
if (cur != 0) { /* no straight line */
xx += sx; xx *= sx = x0 < x2 ? 1 : -1; /* x step direction */
yy += sy; yy *= sy = y0 < y2 ? 1 : -1; /* y step direction */
xy = 2*xx*yy; xx *= xx; yy *= yy; /* differences 2nd degree */
if (cur*sx*sy < 0) { /* negated curvature? */
xx = -xx; yy = -yy; xy = -xy; cur = -cur;
}
dx = 4.0*sy*cur*(x1-x0)+xx-xy; /* differences 1st degree */
dy = 4.0*sx*cur*(y0-y1)+yy-xy;
xx += xx; yy += yy; err = dx+dy+xy; /* error 1st step */
do {
//setPixel(x0,y0); /* plot curve */
if (x0 == x2 && y0 == y2) return; /* last pixel -> curve finished */
y1 = 2*err < dx; /* save value for test of y step */
if (2*err > dy) { x0 += sx; dx -= xy; err += dy += yy; } /* x step */
if ( y1 ) { y0 += sy; dy -= xy; err += dx += xx; } /* y step */
} while (dy < dx ); /* gradient negates -> algorithm fails */
}
plotLine(x0,y0, x2,y2); /* plot remaining part to end */
}
void lineThrough(Point2D *a, Point2D *b) {
//set a and b to be two points separating the polygons
a->x = 30;
a->y = 90;
b->x = 70;
b->y = 50;
plotLine(*a,*b, 2);
// don't forget to visualize ;)
}
void QRPlot::selectionChangedSlot(const QItemSelection & /*newSelection*/, const QItemSelection & /*oldSelection*/) {
const QModelIndex index = ui->treeView->selectionModel()->currentIndex();
QString selectedText = index.data(Qt::DisplayRole).toString();
QString parent = index.parent().data(Qt::DisplayRole).toString();
qDebug() << "Selected item: " << selectedText;
qDebug() << "Parent: " << parent;
plotLine(selectedText, parent);
ui->propertyInfo->clear();
ui->propertyInfo->insertPlainText(propertyInfo.getPropertyInfo(selectedText));
}
void
ShowView(Loc x, Loc y, Direction dir)
{
register XYpair *tp = viewTable;
register int tx = x.value();
register int ty = y.value();
RatIndexType ratIndex(0);
RatLook ratLook;
bool oldVisible;
ClearView();
prevEdge3 = prevEdge7 = FALSE;
while (!M->maze_[tx][ty]) {
tp = hidden(tx, ty, dir, tp); /* draw a cell */
switch (dir.value()) {
case NORTH: tx++; break;
case SOUTH: tx--; break;
case EAST: ty++; break;
case WEST: ty--; break;
}
}
if (prevEdge3)
(void) plotLine(edge3Lines, TRUE);
if (prevEdge7)
(void) plotLine(edge7Lines, TRUE);
/* show the tokens */
for (ratIndex = 0; ratIndex < MAX_RATS; ratIndex = RatIndexType(ratIndex.value() + 1)) {
if (ratIndex == MY_RAT_INDEX)
continue;
ratLook = &Rats2Display[ratIndex.value()];
oldVisible = ratLook->visible;
TokenVisible(ratIndex);
if (ratLook->visible == TRUE)
XORToken(ratIndex);
if (ratLook->visible != oldVisible)
UpdateScoreCard(ratIndex);
}
}
void SocSystem_Analytical::displayTrajectory(const arr& q,const arr *invQ,int steps,const char *tag){
cout <<"gnuplot trajectory display " <<tag <<endl;
plotGnuplot();
plotClear();
plotPoints(obstacles);
plotLine(q);
arr C;
for(uint t=0;t<q.d0;t+=1){
inverse_SymPosDef(C,(*invQ)[t]);
plotCovariance(q[t],C);
}
plot();
}
// main function
int main(void) {
REG_DISPCTL = MODE3 | BG2_ENABLE; // REG_DISPCTL = 1027/0x0403
drawRect(0, 0, 240, 160, RGB(31, 31, 31)); //color1: white; drawRect
while (1) {
// draw UGLY GOOGLE
// draw "G"
drawRect(50, 40, 5, 5, RGB(0, 0, 31)); // color2: blue
drawRect(45, 35, 5, 5, RGB(0, 0, 31));
drawRect(40, 20, 15, 5, RGB(0, 0, 31));
drawRect(45, 15, 5, 5, RGB(0, 0, 31));
drawRect(50, 10, 5, 5, RGB(0, 0, 31));
drawRect(55, 5, 5, 30, RGB(0, 0, 31));
drawRect(85, 10, 5, 5, RGB(0, 0, 31));
drawRect(90, 15, 5, 5, RGB(0, 0, 31));
drawRect(95, 20, 15, 5, RGB(0, 0, 31));
drawRect(90, 35, 5, 5, RGB(0, 0, 31));
drawRect(80, 40, 5, 15, RGB(0, 0, 31));
drawRect(75, 30, 20, 5, RGB(0, 0, 31));
// draw "OO"
drawHollowRect(65, 55, 30, 35, RGB(31, 0, 0)); // color3: red; drawHollowRect
drawHollowRect(65, 90, 30, 35, RGB(31, 21, 0)); // color4: orange
// draw 'g'
drawHollowRect(65, 125, 20, 20, RGB(0, 0, 31));
setPixel(64, 145, RGB(0, 0, 31)); // setPixel
setPixel(64, 146, RGB(0, 0, 31));
setPixel(64, 147, RGB(0, 0, 31));
setPixel(63, 148, RGB(0, 0, 31));
plotLine(145, 85, 150, 100, RGB(0, 0, 31)); // plotLine
drawHollowRect(90, 125, 26, 15, RGB(0, 0, 31));
// draw 'l'
drawRect(40, 160, 5, 60, RGB(0, 31, 0)); // color5: green
// draw 'e'
drawRect(80, 180, 25, 5, RGB(31, 0, 0));
drawRect(75, 200, 5, 5, RGB(31, 0, 0));
drawRect(70, 195, 5, 5, RGB(31, 0, 0));
drawRect(65, 190, 5, 5, RGB(31, 0, 0));
drawRect(70, 185, 5, 5, RGB(31, 0, 0));
drawRect(75, 180, 5, 5, RGB(31, 0, 0));
drawRect(85, 180, 5, 15, RGB(31, 0, 0));
drawRect(95, 185, 20, 5, RGB(31, 0, 0));
}
}
void plotEllipseRectAA(int x0, int y0, int x1, int y1)
{ /* draw a black anti-aliased rectangular ellipse on white background */
long a = abs(x1-x0), b = abs(y1-y0), b1 = b&1; /* diameter */
double dx = 4*(a-1.0)*b*b, dy = 4*(b1+1)*a*a; /* error increment */
double ed, i, err = b1*a*a-dx+dy; /* error of 1.step */
bool f;
if (a == 0 || b == 0) return plotLine(x0,y0, x1,y1);
if (x0 > x1) { x0 = x1; x1 += a; } /* if called with swapped points */
if (y0 > y1) y0 = y1; /* .. exchange them */
y0 += (b+1)/2; y1 = y0-(int)b1; /* starting pixel */
a = 8*a*a; b1 = 8*b*b;
for (;;) { /* approximate ed=sqrt(dx*dx+dy*dy) */
i = fmin(dx,dy); ed = fmax(dx,dy);
if (y0 == y1+1 && err > dy && a > b1) ed = 255*4./a; /* x-tip */
else ed = 255/(ed+2*ed*i*i/(4*ed*ed+i*i)); /* approximation */
i = ed*fabs(err+dx-dy); /* get intensity value by pixel error */
//setPixelAA(x0,y0, i); setPixelAA(x0,y1, i);
//setPixelAA(x1,y0, i); setPixelAA(x1,y1, i);
if ((f = 2*err+dy >= 0)) { /* x step, remember condition */
if (x0 >= x1) break;
i = ed*(err+dx);
if (i < 255) {
//setPixelAA(x0,y0+1, i); setPixelAA(x0,y1-1, i);
//setPixelAA(x1,y0+1, i); setPixelAA(x1,y1-1, i);
} /* do error increment later since values are still needed */
}
if (2*err <= dx) { /* y step */
i = ed*(dy-err);
if (i < 255) {
//setPixelAA(x0+1,y0, i); setPixelAA(x1-1,y0, i);
//setPixelAA(x0+1,y1, i); setPixelAA(x1-1,y1, i);
}
y0++; y1--; err += dy += a;
}
if (f) { x0++; x1--; err -= dx -= b1; } /* x error increment */
}
if (--x0 == x1++) /* too early stop of flat ellipses */
while (y0-y1 < b) {
i = 255*4*fabs(err+dx)/b1; /* -> finish tip of ellipse */
//setPixelAA(x0,++y0, i); setPixelAA(x1,y0, i);
//setPixelAA(x0,--y1, i); setPixelAA(x1,y1, i);
err += dy += a;
}
}
void plotQuadRationalBezierSeg(int x0, int y0, int x1, int y1,
int x2, int y2, double w)
{ /* plot a limited rational Bezier segment, squared weight */
int sx = x2-x1, sy = y2-y1; /* relative values for checks */
double dx = x0-x2, dy = y0-y2, xx = x0-x1, yy = y0-y1;
double xy = xx*sy+yy*sx, cur = xx*sy-yy*sx, err; /* curvature */
assert(xx*sx <= 0.0 && yy*sy <= 0.0); /* sign of gradient must not change */
if (cur != 0.0 && w > 0.0) { /* no straight line */
if (sx*(long)sx+sy*(long)sy > xx*xx+yy*yy) { /* begin with longer part */
x2 = x0; x0 -= dx; y2 = y0; y0 -= dy; cur = -cur; /* swap P0 P2 */
}
xx = 2.0*(4.0*w*sx*xx+dx*dx); /* differences 2nd degree */
yy = 2.0*(4.0*w*sy*yy+dy*dy);
sx = x0 < x2 ? 1 : -1; /* x step direction */
sy = y0 < y2 ? 1 : -1; /* y step direction */
xy = -2.0*sx*sy*(2.0*w*xy+dx*dy);
if (cur*sx*sy < 0.0) { /* negated curvature? */
xx = -xx; yy = -yy; xy = -xy; cur = -cur;
}
dx = 4.0*w*(x1-x0)*sy*cur+xx/2.0+xy; /* differences 1st degree */
dy = 4.0*w*(y0-y1)*sx*cur+yy/2.0+xy;
if (w < 0.5 && (dy > xy || dx < xy)) { /* flat ellipse, algorithm fails */
cur = (w+1.0)/2.0; w = sqrt(w); xy = 1.0/(w+1.0);
sx = (int) floor((x0+2.0*w*x1+x2)*xy/2.0+0.5); /* subdivide curve in half */
sy = (int) floor((y0+2.0*w*y1+y2)*xy/2.0+0.5);
dx = floor((w*x1+x0)*xy+0.5); dy = floor((y1*w+y0)*xy+0.5);
plotQuadRationalBezierSeg(x0,y0, (int) dx, (int) dy, sx,sy, cur);/* plot separately */
dx = floor((w*x1+x2)*xy+0.5); dy = floor((y1*w+y2)*xy+0.5);
plotQuadRationalBezierSeg(sx,sy, (int) dx, (int) dy, x2,y2, cur);
return;
}
err = dx+dy-xy; /* error 1.step */
do {
//setPixel(x0,y0); /* plot curve */
if (x0 == x2 && y0 == y2) return; /* last pixel -> curve finished */
x1 = 2*err > dy; y1 = 2*(err+yy) < -dy;/* save value for test of x step */
if (2*err < dx || y1) { y0 += sy; dy += xy; err += dx += xx; }/* y step */
if (2*err > dx || x1) { x0 += sx; dx += xy; err += dy += yy; }/* x step */
} while (dy <= xy && dx >= xy); /* gradient negates -> algorithm fails */
}
plotLine(x0,y0, x2,y2); /* plot remaining needle to end */
}
void PCD8544::plotRectFill(byte x0, byte y0, byte x1, byte y1)
{
byte xDiff;
if(x0 > x1)
xDiff = x0 - x1; //Find the difference between the x vars
else
xDiff = x1 - x0;
while(xDiff > 0)
{
plotLine(x0, y0, x0, y1);
if(x0 > x1)
x0--;
else
x0++;
xDiff--;
}
}
void
plotAxes(plotPS *pps, plotParm *pparm, Nrrd *ndata) {
double axX, axY, xx, yy, toff;
char buff[AIR_STRLEN_SMALL];
int ti;
AIR_UNUSED(ndata);
axX = AIR_AFFINE(pparm->dbox[0], pparm->axisOrig[0], pparm->dbox[2],
pps->bbox[0], pps->bbox[2]);
axY = AIR_AFFINE(pparm->dbox[1], pparm->axisOrig[1], pparm->dbox[3],
pps->bbox[1], pps->bbox[3]);
plotGray(pps, pparm, 0);
plotWidth(pps, pparm, pparm->axisThick);
plotLine(pps, pparm,
axX, pps->bbox[1], axX, pps->bbox[3]);
plotLine(pps, pparm,
pps->bbox[0], axY, pps->bbox[2], axY);
if (strlen(pparm->axisHorzLabel) || strlen(pparm->axisVertLabel)) {
fprintf(pps->file, "/Helvetica findfont 20 scalefont setfont\n");
if (strlen(pparm->axisHorzLabel)) {
plotLabel(pps, pparm, AIR_FALSE,
pps->bbox[2], axY, pparm->axisHorzLabel);
}
if (strlen(pparm->axisVertLabel)) {
plotLabel(pps, pparm, AIR_FALSE,
axX, pps->bbox[3], pparm->axisVertLabel);
}
}
if (pparm->numHorzTick) {
if (pparm->tickThick > 0) {
toff = pparm->tickLength/2;
plotGray(pps, pparm, 0);
plotWidth(pps, pparm, pparm->tickThick);
for (ti=0; ti<pparm->numHorzTick; ti++) {
xx = AIR_AFFINE(pparm->dbox[0], pparm->horzTick[ti], pparm->dbox[2],
pps->bbox[0], pps->bbox[2]);
plotLine(pps, pparm, xx, axY - toff, xx, axY + toff);
}
}
if (pparm->tickLabelSize) {
fprintf(pps->file, "/Helvetica findfont %g scalefont setfont\n",
pparm->tickLabelSize);
for (ti=0; ti<pparm->numHorzTick; ti++) {
xx = AIR_AFFINE(pparm->dbox[0], pparm->horzTick[ti], pparm->dbox[2],
pps->bbox[0], pps->bbox[2]);
yy = axY + pparm->horzTickLabelOffset;
sprintf(buff, "%g", pparm->horzTick[ti]);
plotLabel(pps, pparm, AIR_TRUE, xx, yy, buff);
}
}
}
if (pparm->numVertTick) {
if (pparm->tickThick > 0) {
toff = pparm->tickLength/2;
plotGray(pps, pparm, 0);
plotWidth(pps, pparm, pparm->tickThick);
for (ti=0; ti<pparm->numVertTick; ti++) {
yy = AIR_AFFINE(pparm->dbox[1], pparm->vertTick[ti], pparm->dbox[3],
pps->bbox[1], pps->bbox[3]);
plotLine(pps, pparm, axX - toff, yy, axX + toff, yy);
}
}
if (pparm->tickLabelSize) {
fprintf(pps->file, "/Helvetica findfont %g scalefont setfont\n",
pparm->tickLabelSize);
for (ti=0; ti<pparm->numVertTick; ti++) {
yy = AIR_AFFINE(pparm->dbox[1], pparm->vertTick[ti], pparm->dbox[3],
pps->bbox[1], pps->bbox[3]);
xx = axX + pparm->vertTickLabelOffset;
sprintf(buff, "%g", pparm->vertTick[ti]);
plotLabel(pps, pparm, AIR_TRUE, xx, yy, buff);
}
}
}
}
void
DualStepper::moveTo(int ax, int ay, float speed)
{
xStepper->targetPos = ax;
yStepper->targetPos = ay;
long dx = ax - xStepper->pos;
long dy = ay - yStepper->pos;
majorAxisSpeed = min(speed, maxSpeed) * max(abs(dx), abs(dy)) / sqrt(dx * dx + dy * dy);
switch (octant(dx, dy)) {
case 0:
_xStepper = xStepper;
_yStepper = yStepper;
xdir = FORWARD;
ydir = FORWARD;
plotLine(dx, dy);
break;
case 1:
_xStepper = yStepper;
_yStepper = xStepper;
xdir = FORWARD;
ydir = FORWARD;
plotLine(dy, dx);
break;
case 2:
_xStepper = yStepper;
_yStepper = xStepper;
xdir = FORWARD;
ydir = BACKWARD;
plotLine(dy, -dx);
break;
case 3:
_xStepper = xStepper;
_yStepper = yStepper;
xdir = BACKWARD;
ydir = FORWARD;
plotLine(-dx, dy);
break;
case 4:
_xStepper = xStepper;
_yStepper = yStepper;
xdir = BACKWARD;
ydir = BACKWARD;
plotLine(-dx, -dy);
break;
case 5:
_xStepper = yStepper;
_yStepper = xStepper;
xdir = BACKWARD;
ydir = BACKWARD;
plotLine(-dy, -dx);
break;
case 6:
_xStepper = yStepper;
_yStepper = xStepper;
xdir = BACKWARD;
ydir = FORWARD;
plotLine(-dy, dx);
break;
case 7:
_xStepper = xStepper;
_yStepper = yStepper;
xdir = FORWARD;
ydir = BACKWARD;
plotLine(dx, -dy);
break;
}
}
/*----------------------------------------------------------------------*/
int main(int argc, char *argv[])
{
SDL_Surface *screen;
int width, height;
Uint8 video_bpp;
Uint32 videoflags;
int done;
SDL_Event event;
Uint32 then, now, frames;
if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) {
fprintf(stderr, "SDL_Init problem: %s", SDL_GetError());
exit(1);
}
atexit(SDL_Quit);
videoflags = SDL_SWSURFACE | SDL_ANYFORMAT;
width = 640;
height = 480;
video_bpp = 0;
while ( argc > 1 ) {
--argc;
if ( strcmp(argv[argc-1], "-width") == 0 ) {
width = atoi(argv[argc]);
--argc;
} else if ( strcmp(argv[argc-1], "-height") == 0 ) {
height = atoi(argv[argc]);
--argc;
} else if ( strcmp(argv[argc-1], "-bpp") == 0 ) {
video_bpp = atoi(argv[argc]);
videoflags &= ~SDL_ANYFORMAT;
--argc;
} else if ( strcmp(argv[argc], "-fast") == 0 ) {
videoflags = FastestFlags(videoflags, width, height, video_bpp);
} else if ( strcmp(argv[argc], "-hw") == 0 ) {
videoflags ^= SDL_HWSURFACE;
} else if ( strcmp(argv[argc], "-flip") == 0 ) {
videoflags ^= SDL_DOUBLEBUF;
} else if ( strcmp(argv[argc], "-fullscreen") == 0 ) {
videoflags ^= SDL_FULLSCREEN;
} else {
fprintf(stderr, "Use: %s [-bpp N] [-hw] [-flip] [-fast] [-fullscreen]\n",
argv[0]);
exit(1);
}
}/*while*/
/*Video mode activation*/
screen = SDL_SetVideoMode(width, height, video_bpp, videoflags);
if (!screen) {
fprintf(stderr, "I can not activate video mode: %dx%d: %s\n",
width, height, SDL_GetError());
exit(2);
}
{
//Define Colors
//1: White
//2: Gray
//3: Dark Gray
//4: Red
//5: Green
//6: Blue
Uint32 c_colors[] = {SDL_MapRGB(screen->format, 255,255,255), SDL_MapRGB(screen->format, 200,200,200),
SDL_MapRGB(screen->format, 64,64,64), SDL_MapRGB(screen->format, 255,0,0),
SDL_MapRGB(screen->format, 0,255,0), SDL_MapRGB(screen->format, 0,0,255)};
plotAxes(screen, c_colors, width, height, -20, 30, -20, 20);
plotLine(screen, c_colors);
SDL_UpdateRect(screen, 0, 0, 0, 0);
frames = 0;
then = SDL_GetTicks();
done = 0;
while( !done ) {
++frames;
while ( SDL_PollEvent(&event) ) {
switch (event.type) {
case SDL_KEYDOWN:
/*break;*/
case SDL_QUIT:
done = 1;
break;
default:
break;
}
}/*while*/
}/*while(!done)*/
}/*END*/
now = SDL_GetTicks();
if ( now > then ) {
printf("%2.2f frames per second\n",
((double)frames*1000)/(now-then));
}
fprintf(stderr, "[END]\n");
return 0;
}/*main*/
static XYpair*
hidden(Loc x, Loc y, Direction dir, XYpair *p)
{
int l1x, l1y, l2x, l2y;
int r1x, r1y, r2x, r2y;
int c2x, c2y;
/* first calculate the coordinates of the neighboring cubes */
l1x = x.value() + l1Delta[dir.value()].xcor; /* find left cube */
l1y = y.value() + l1Delta[dir.value()].ycor;
l2x = x.value() + l2Delta[dir.value()].xcor; /* find left forward cube */
l2y = y.value() + l2Delta[dir.value()].ycor;
r1x = x.value() + r1Delta[dir.value()].xcor; /* find right cube */
r1y = y.value() + r1Delta[dir.value()].ycor;
r2x = x.value() + r2Delta[dir.value()].xcor; /* find right forward cube */
r2y = y.value() + r2Delta[dir.value()].ycor;
c2x = x.value() + c2Delta[dir.value()].xcor; /* find forward cube */
c2y = y.value() + c2Delta[dir.value()].ycor;
/* next calculate which of the 7 possible cube edges are visible */
edge2 = M->maze_[c2x][c2y]; /* c2 */
edge3 = M->maze_[l1x][l1y]; /* l1 */
edge4 = !edge3; /* !l1 */
edge7 = M->maze_[r1x][r1y]; /* r1 */
edge6 = !edge7; /* !r1 */
edge1 = (edge3 && (edge2 || !M->maze_[l2x][l2y]))
|| ((!edge2) && edge4);
edge5 = (edge7 && (edge2 || !M->maze_[r2x][r2y]))
|| ((!edge2) && edge6);
/*
* Should be matching the following:
* x1 = l1 (c2 + !l2) + !c2 !l1
* x2 = c2
* x3 = l1
* x4 = !l1
* x5 = r1 (c2 + !r2) + !c2 !r1
* x6 = !r1
* x7 = r1
*/
if (edge1)
p = plotLine(p, FALSE);
else
p++;
if (edge2)
p = plotLine(p, TRUE);
else
p += 2;
if (edge3) {
if (prevEdge3) {
edge3Lines[0].p2 = (p++)->p2;
edge3Lines[1].p2 = p->p2;
} else {
edge3Lines[0] = *p++;
edge3Lines[1] = *p;
prevEdge3 = TRUE;
}
p++;
} else {
if (prevEdge3) {
(void) plotLine(edge3Lines, TRUE);
prevEdge3 = FALSE;
}
p += 2;
}
if (edge4)
p = plotLine(p, TRUE);
else
p += 2;
if (edge5)
p = plotLine(p, FALSE);
else
p++;
if (edge6)
p = plotLine(p, TRUE);
else
p += 2;
if (edge7) {
if (prevEdge7) {
edge7Lines[0].p1 = (p++)->p1;
edge7Lines[1].p1 = p->p1;
} else {
edge7Lines[0] = *p++;
edge7Lines[1] = *p;
prevEdge7 = TRUE;
}
p++;
} else {
if (prevEdge7) {
(void) plotLine(edge7Lines, TRUE);
prevEdge7 = FALSE;
}
p += 2;
}
return p;
}
