void Context::appendPath( const cinder::Path2d &path )
{
size_t point = 0;
if( path.empty() )
return;
moveTo( path.getPoint( point++ ) );
for( size_t seg = 0; seg < path.getNumSegments(); ++seg ) {
switch( path.getSegmentType( seg ) ) {
case Path2d::LINETO:
lineTo( path.getPoint( point++ ) );
break;
case Path2d::QUADTO: {
const Vec2f &spl0( path.getPoint( point - 1 ) ); const Vec2f &spl1( path.getPoint( point + 0 ) ); const Vec2f &spl2( path.getPoint( point + 1 ) );
curveTo( spl0 + (spl1 - spl0) / 3.0f * 2.0f, spl1 + (spl2 - spl1) / 3.0f, spl2 );
point += 2;
}
break;
case Path2d::CUBICTO:
curveTo( path.getPoint( point ), path.getPoint( point + 1 ), path.getPoint( point + 2 ) );
point += 3;
break;
case Path2d::CLOSE:
closePath();
break;
}
}
}
void ShapeMaker::cubicTo (const Bezier &cubic)
{
const double sqrt3 = 1.7320508075688772935274463415059;
const double precision = 600 * 18 / (60 * factorx * sqrt3);
// distance between control points of quadratic approximations of either end
double D01 = (cubic.p1 - (cubic.c1 - cubic.c0) * 3 - cubic.p0).magnitude () / 2;
double tMax3 = precision / D01;
if (tMax3 >= 1)
{
curveTo (cubic.quadraticCtrl(), cubic.p1);
return;
}
Bezier end(cubic);
if (tMax3 >= 0.5 * 0.5 * 0.5)
{
Bezier start (end.split (0.5));
curveTo (start.quadraticCtrl (), start.p1);
}
else
{
double tMax = pow (tMax3, 1.0/3.0);
Bezier start (end.split (tMax));
Bezier middle (end.split (1 - tMax / (1 - tMax)));
curveTo (start.quadraticCtrl (), start.p1);
cubicTo (middle);
}
curveTo (end.quadraticCtrl (), end.p1);
}
void QgsDxfPaintEngine::drawPath( const QPainterPath& path )
{
int pathLength = path.elementCount();
for ( int i = 0; i < pathLength; ++i )
{
const QPainterPath::Element& pathElem = path.elementAt( i );
if ( pathElem.type == QPainterPath::MoveToElement )
{
moveTo( pathElem.x, pathElem.y );
}
else if ( pathElem.type == QPainterPath::LineToElement )
{
lineTo( pathElem.x, pathElem.y );
}
else if ( pathElem.type == QPainterPath::CurveToElement )
{
curveTo( pathElem.x, pathElem.y );
}
else if ( pathElem.type == QPainterPath::CurveToDataElement )
{
mCurrentCurve.append( QPointF( pathElem.x, pathElem.y ) );
}
}
endCurve();
endPolygon();
}
void ShapeMaker::cubicToRec( const Point& a, const Point& b, const Point& c, const Point& d, double k, int iteration ) {
Point s = intersectLines( a, b, c, d );
double dx = (a.x+d.x+s.x*4-(b.x+c.x)*3)*.125;
double dy = (a.y+d.y+s.y*4-(b.y+c.y)*3)*.125;
Bezier bz( a, b, c, d );
Bezier b0, b1;
if( dx*dx + dy*dy > k && iteration<10 ) {
// fprintf(stderr,"[%03i] split: %f\n", iteration, dx*dx + dy*dy);
bezierSplit( bz, &b0, &b1 );
// recurse
iteration++;
cubicToRec( a, b0.p1, b0.p2, b0.p3, k, iteration );
//lineTo( b0.p3.x, b0.p3.y );
cubicToRec( b1.p0, b1.p1, b1.p2, d, k, iteration );
//lineTo( b1.p1.x, b1.p1.y );
//lineTo( b1.p2.x, b1.p2.y );
//lineTo( d.x, d.y );
} else {
// fprintf(stderr,"#### %i %i %i %i\n", (int)s.x, (int)s.y, (int)d.x, (int)d.y );
//lineTo( (int)s.x, (int)s.y );
//lineTo( (int)d.x, (int)d.y );
curveTo( s.x, s.y, d.x, d.y );
}
}
void
PathParser::line_to(const Edge& curve)
{
if (curve.straight()) {
lineTo(curve.ap);
} else {
curveTo(curve);
}
}
void ShapeMaker::ellipseSegment( double cx, double cy, double rx, double ry, double phi, double theta, double dTheta) {
double a1 = theta + dTheta / 2;
double a2 = theta + dTheta;
double f = cos(dTheta / 2);
Point p1(cos(a1) * rx / f, sin(a1) * ry / f);
Point p2(cos(a2) * rx, sin(a2) * ry);
p1.rotate(phi);
p2.rotate(phi);
curveTo(cx + p1.x, cy + p1.y, cx + p2.x, cy + p2.y);
}
QT_FT_Outline *QOutlineMapper::convertPath(const QVectorPath &path)
{
int count = path.elementCount();
#ifdef QT_DEBUG_CONVERT
printf("QOutlineMapper::convertPath(VP), size=%d\n", count);
#endif
beginOutline(path.hasWindingFill() ? Qt::WindingFill : Qt::OddEvenFill);
if (path.elements()) {
// TODO: if we do closing of subpaths in convertElements instead we
// could avoid this loop
const QPainterPath::ElementType *elements = path.elements();
const QPointF *points = reinterpret_cast<const QPointF *>(path.points());
for (int index = 0; index < count; ++index) {
switch (elements[index]) {
case QPainterPath::MoveToElement:
if (index == count - 1)
continue;
moveTo(points[index]);
break;
case QPainterPath::LineToElement:
lineTo(points[index]);
break;
case QPainterPath::CurveToElement:
curveTo(points[index], points[index+1], points[index+2]);
index += 2;
break;
default:
break; // This will never hit..
}
}
} else {
// ### We can kill this copying and just use the buffer straight...
m_elements.resize(count);
if (count)
memcpy(m_elements.data(), path.points(), count* sizeof(QPointF));
m_element_types.resize(0);
}
endOutline();
return outline();
}
void KoConnectionShape::updatePath(const QSizeF &size)
{
Q_UNUSED(size);
Q_D(KoConnectionShape);
const qreal MinimumEscapeLength = (qreal)20.;
clear();
switch (d->connectionType) {
case Standard: {
d->normalPath(MinimumEscapeLength);
if (d->path.count() != 0){
moveTo(d->path[0]);
for (int index = 1; index < d->path.count(); ++index)
lineTo(d->path[index]);
}
break;
}
case Lines: {
QPointF direction1 = d->escapeDirection(0);
QPointF direction2 = d->escapeDirection(d->handles.count() - 1);
moveTo(d->handles[StartHandle]);
if (! direction1.isNull())
lineTo(d->handles[StartHandle] + MinimumEscapeLength * direction1);
if (! direction2.isNull())
lineTo(d->handles[EndHandle] + MinimumEscapeLength * direction2);
lineTo(d->handles[EndHandle]);
break;
}
case Straight:
moveTo(d->handles[StartHandle]);
lineTo(d->handles[EndHandle]);
break;
case Curve:
// TODO
QPointF direction1 = d->escapeDirection(0);
QPointF direction2 = d->escapeDirection(d->handles.count() - 1);
moveTo(d->handles[StartHandle]);
if (! direction1.isNull() && ! direction2.isNull()) {
QPointF curvePoint1 = d->handles[StartHandle] + 5.0 * MinimumEscapeLength * direction1;
QPointF curvePoint2 = d->handles[EndHandle] + 5.0 * MinimumEscapeLength * direction2;
curveTo(curvePoint1, curvePoint2, d->handles[EndHandle]);
} else {
lineTo(d->handles[EndHandle]);
}
break;
}
normalize();
}
void Knob::initPath() {
double data[DATA_LEN][DATA_LEN];
for (int i=0;i<DATA_LEN;i++) {
for (int j=0;j<DATA_LEN;j++) {
data[i][j] = ctl[i][j];
}
}
jitter (data, XVARY, YVARY, XDBVARY, XDFVARY);
cPath.setFillRule(Qt::WindingFill);
cPathReverse.setFillRule(Qt::WindingFill);
cPath.moveTo(data[0][X],data[0][Y]);
cPathReverse.moveTo(data[DATA_LEN-1][X],data[DATA_LEN-1][Y]);
for (int i = 0; i < (DATA_LEN-1); i++) {
curveTo (cPath, data, i, true);
curveTo (cPathReverse, data, DATA_LEN-1-i, false);
}
// Transform to coincide with line segment (x1,y1)-(x2,y2)
QMatrix affine(x2-x1, y2-y1, y1-y2, x2-x1, x1, y1);
cPath=affine.map(cPath);
cPathReverse=affine.map(cPathReverse);
}
QT_FT_Outline *QOutlineMapper::convertPath(const QPainterPath &path)
{
Q_ASSERT(!path.isEmpty());
int elmCount = path.elementCount();
#ifdef QT_DEBUG_CONVERT
printf("QOutlineMapper::convertPath(), size=%d\n", elmCount);
#endif
beginOutline(path.fillRule());
for (int index=0; index<elmCount; ++index) {
const QPainterPath::Element &elm = path.elementAt(index);
switch (elm.type) {
case QPainterPath::MoveToElement:
if (index == elmCount - 1)
continue;
moveTo(elm);
break;
case QPainterPath::LineToElement:
lineTo(elm);
break;
case QPainterPath::CurveToElement:
curveTo(elm, path.elementAt(index + 1), path.elementAt(index + 2));
index += 2;
break;
default:
break; // This will never hit..
}
}
endOutline();
return outline();
}
//----------------------------------------------------------
void ofPath::curveTo(float x, float y, float z){
curveTo(ofPoint(x,y,z));
}
//----------------------------------------------------------
void ofPath::curveTo(float x, float y){
curveTo(glm::vec3(x,y,0));
}
void cff_parseOutline(uint8_t *data, uint32_t len, cff_Index gsubr, cff_Index lsubr, cff_Stack *stack, void *outline,
cff_IOutlineBuilder methods, const otfcc_Options *options) {
uint16_t gsubr_bias = compute_subr_bias(gsubr.count);
uint16_t lsubr_bias = compute_subr_bias(lsubr.count);
uint8_t *start = data;
uint32_t advance, i, cnt_bezier;
cff_Value val;
void (*setWidth)(void *context, double width) = methods.setWidth;
void (*newContour)(void *context) = methods.newContour;
void (*lineTo)(void *context, double x1, double y1) = methods.lineTo;
void (*curveTo)(void *context, double x1, double y1, double x2, double y2, double x3, double y3) = methods.curveTo;
void (*setHint)(void *context, bool isVertical, double position, double width) = methods.setHint;
void (*setMask)(void *context, bool isContourMask, bool *mask) = methods.setMask;
double (*getrand)(void *context) = methods.getrand;
if (!setWidth) setWidth = callback_nopSetWidth;
if (!newContour) newContour = callback_nopNewContour;
if (!lineTo) lineTo = callback_nopLineTo;
if (!curveTo) curveTo = callback_nopCurveTo;
if (!setHint) setHint = callback_nopsetHint;
if (!setMask) setMask = callback_nopsetMask;
if (!getrand) getrand = callback_nopgetrand;
while (start < data + len) {
advance = cff_decodeCS2Token(start, &val);
switch (val.t) {
case CS2_OPERATOR:
switch (val.i) {
case op_hstem:
case op_vstem:
case op_hstemhm:
case op_vstemhm:
if (stack->index % 2) setWidth(outline, stack->stack[0].d);
stack->stem += stack->index >> 1;
double hintBase = 0;
for (uint16_t j = stack->index % 2; j < stack->index; j += 2) {
double pos = stack->stack[j].d;
double width = stack->stack[j + 1].d;
setHint(outline, (val.i == op_vstem || val.i == op_vstemhm), pos + hintBase, width);
hintBase += pos + width;
}
stack->index = 0;
break;
case op_hintmask:
case op_cntrmask: {
if (stack->index % 2) setWidth(outline, stack->stack[0].d);
bool isVertical = stack->stem > 0;
stack->stem += stack->index >> 1;
double hintBase = 0;
for (uint16_t j = stack->index % 2; j < stack->index; j += 2) {
double pos = stack->stack[j].d;
double width = stack->stack[j + 1].d;
setHint(outline, isVertical, pos + hintBase, width);
hintBase += pos + width;
}
uint32_t maskLength = (stack->stem + 7) >> 3;
bool *mask;
NEW(mask, stack->stem + 7);
for (uint32_t byte = 0; byte < maskLength; byte++) {
uint8_t maskByte = start[advance + byte];
mask[(byte << 3) + 0] = maskByte >> 7 & 1;
mask[(byte << 3) + 1] = maskByte >> 6 & 1;
mask[(byte << 3) + 2] = maskByte >> 5 & 1;
mask[(byte << 3) + 3] = maskByte >> 4 & 1;
mask[(byte << 3) + 4] = maskByte >> 3 & 1;
mask[(byte << 3) + 5] = maskByte >> 2 & 1;
mask[(byte << 3) + 6] = maskByte >> 1 & 1;
mask[(byte << 3) + 7] = maskByte >> 0 & 1;
}
setMask(outline, (val.i == op_cntrmask), mask);
advance += maskLength;
stack->index = 0;
break;
}
case op_vmoveto: {
CHECK_STACK_TOP(op_vmoveto, 1);
if (stack->index > 1) setWidth(outline, stack->stack[stack->index - 2].d);
newContour(outline);
lineTo(outline, 0.0, stack->stack[stack->index - 1].d);
stack->index = 0;
break;
}
case op_rmoveto: {
CHECK_STACK_TOP(op_rmoveto, 2);
if (stack->index > 2) setWidth(outline, stack->stack[stack->index - 3].d);
newContour(outline);
lineTo(outline, stack->stack[stack->index - 2].d, stack->stack[stack->index - 1].d);
stack->index = 0;
break;
}
case op_hmoveto: {
CHECK_STACK_TOP(op_hmoveto, 1);
if (stack->index > 1) setWidth(outline, stack->stack[stack->index - 2].d);
newContour(outline);
lineTo(outline, stack->stack[stack->index - 1].d, 0.0);
stack->index = 0;
break;
}
case op_endchar: {
if (stack->index > 0) setWidth(outline, stack->stack[stack->index - 1].d);
break;
}
case op_rlineto: {
for (i = 0; i < stack->index; i += 2)
lineTo(outline, stack->stack[i].d, stack->stack[i + 1].d);
stack->index = 0;
break;
}
case op_vlineto: {
if (stack->index % 2 == 1) {
lineTo(outline, 0.0, stack->stack[0].d);
for (i = 1; i < stack->index; i += 2) {
lineTo(outline, stack->stack[i].d, 0.0);
lineTo(outline, 0.0, stack->stack[i + 1].d);
}
} else {
for (i = 0; i < stack->index; i += 2) {
lineTo(outline, 0.0, stack->stack[i].d);
lineTo(outline, stack->stack[i + 1].d, 0.0);
}
}
stack->index = 0;
break;
}
case op_hlineto: {
if (stack->index % 2 == 1) {
lineTo(outline, stack->stack[0].d, 0.0);
for (i = 1; i < stack->index; i += 2) {
lineTo(outline, 0.0, stack->stack[i].d);
lineTo(outline, stack->stack[i + 1].d, 0.0);
}
} else {
for (i = 0; i < stack->index; i += 2) {
lineTo(outline, stack->stack[i].d, 0.0);
lineTo(outline, 0.0, stack->stack[i + 1].d);
}
}
stack->index = 0;
break;
}
case op_rrcurveto: {
for (i = 0; i < stack->index; i += 6)
curveTo(outline, stack->stack[i].d, stack->stack[i + 1].d, stack->stack[i + 2].d,
stack->stack[i + 3].d, stack->stack[i + 4].d, stack->stack[i + 5].d);
stack->index = 0;
break;
}
case op_rcurveline: {
for (i = 0; i < stack->index - 2; i += 6)
curveTo(outline, stack->stack[i].d, stack->stack[i + 1].d, stack->stack[i + 2].d,
stack->stack[i + 3].d, stack->stack[i + 4].d, stack->stack[i + 5].d);
lineTo(outline, stack->stack[stack->index - 2].d, stack->stack[stack->index - 1].d);
stack->index = 0;
break;
}
case op_rlinecurve: {
for (i = 0; i < stack->index - 6; i += 2)
lineTo(outline, stack->stack[i].d, stack->stack[i + 1].d);
curveTo(outline, stack->stack[stack->index - 6].d, stack->stack[stack->index - 5].d,
stack->stack[stack->index - 4].d, stack->stack[stack->index - 3].d,
stack->stack[stack->index - 2].d, stack->stack[stack->index - 1].d);
stack->index = 0;
break;
}
case op_vvcurveto: {
if (stack->index % 4 == 1) {
curveTo(outline, stack->stack[0].d, stack->stack[1].d, stack->stack[2].d, stack->stack[3].d,
0.0, stack->stack[4].d);
for (i = 5; i < stack->index; i += 4)
curveTo(outline, 0.0, stack->stack[i].d, stack->stack[i + 1].d, stack->stack[i + 2].d,
0.0, stack->stack[i + 3].d);
} else {
for (i = 0; i < stack->index; i += 4)
curveTo(outline, 0.0, stack->stack[i].d, stack->stack[i + 1].d, stack->stack[i + 2].d,
0.0, stack->stack[i + 3].d);
}
stack->index = 0;
break;
}
case op_hhcurveto: {
if (stack->index % 4 == 1) {
curveTo(outline, stack->stack[1].d, stack->stack[0].d, stack->stack[2].d, stack->stack[3].d,
stack->stack[4].d, 0.0);
for (i = 5; i < stack->index; i += 4)
curveTo(outline, stack->stack[i].d, 0.0, stack->stack[i + 1].d, stack->stack[i + 2].d,
stack->stack[i + 3].d, 0.0);
} else {
for (i = 0; i < stack->index; i += 4)
curveTo(outline, stack->stack[i].d, 0.0, stack->stack[i + 1].d, stack->stack[i + 2].d,
stack->stack[i + 3].d, 0.0);
}
stack->index = 0;
break;
}
case op_vhcurveto: {
if (stack->index % 4 == 1)
cnt_bezier = (stack->index - 5) / 4;
else
cnt_bezier = (stack->index / 4);
for (i = 0; i < 4 * cnt_bezier; i += 4) {
if ((i / 4) % 2 == 0)
curveTo(outline, 0.0, stack->stack[i].d, stack->stack[i + 1].d, stack->stack[i + 2].d,
stack->stack[i + 3].d, 0.0);
else
curveTo(outline, stack->stack[i].d, 0.0, stack->stack[i + 1].d, stack->stack[i + 2].d,
0.0, stack->stack[i + 3].d);
}
if (stack->index % 8 == 5) {
curveTo(outline, 0.0, stack->stack[stack->index - 5].d, stack->stack[stack->index - 4].d,
stack->stack[stack->index - 3].d, stack->stack[stack->index - 2].d,
stack->stack[stack->index - 1].d);
}
if (stack->index % 8 == 1) {
curveTo(outline, stack->stack[stack->index - 5].d, 0.0, stack->stack[stack->index - 4].d,
stack->stack[stack->index - 3].d, stack->stack[stack->index - 1].d,
stack->stack[stack->index - 2].d);
}
stack->index = 0;
break;
}
case op_hvcurveto: {
if (stack->index % 4 == 1)
cnt_bezier = (stack->index - 5) / 4;
else
cnt_bezier = (stack->index / 4);
for (i = 0; i < 4 * cnt_bezier; i += 4) {
if ((i / 4) % 2 == 0)
curveTo(outline, stack->stack[i].d, 0.0, stack->stack[i + 1].d, stack->stack[i + 2].d,
0.0, stack->stack[i + 3].d);
else
curveTo(outline, 0.0, stack->stack[i].d, stack->stack[i + 1].d, stack->stack[i + 2].d,
stack->stack[i + 3].d, 0.0);
}
if (stack->index % 8 == 5) {
curveTo(outline, stack->stack[stack->index - 5].d, 0.0, stack->stack[stack->index - 4].d,
stack->stack[stack->index - 3].d, stack->stack[stack->index - 1].d,
stack->stack[stack->index - 2].d);
}
if (stack->index % 8 == 1) {
curveTo(outline, 0.0, stack->stack[stack->index - 5].d, stack->stack[stack->index - 4].d,
stack->stack[stack->index - 3].d, stack->stack[stack->index - 2].d,
stack->stack[stack->index - 1].d);
}
stack->index = 0;
break;
}
case op_hflex: {
CHECK_STACK_TOP(op_hflex, 7);
curveTo(outline, stack->stack[0].d, 0.0, stack->stack[1].d, stack->stack[2].d,
stack->stack[3].d, 0.0);
curveTo(outline, stack->stack[4].d, 0.0, stack->stack[5].d, -stack->stack[2].d,
stack->stack[6].d, 0.0);
stack->index = 0;
break;
}
case op_flex: {
CHECK_STACK_TOP(op_flex, 12);
curveTo(outline, stack->stack[0].d, stack->stack[1].d, stack->stack[2].d, stack->stack[3].d,
stack->stack[4].d, stack->stack[5].d);
curveTo(outline, stack->stack[6].d, stack->stack[7].d, stack->stack[8].d, stack->stack[9].d,
stack->stack[10].d, stack->stack[11].d);
stack->index = 0;
break;
}
case op_hflex1: {
CHECK_STACK_TOP(op_hflex1, 9);
curveTo(outline, stack->stack[0].d, stack->stack[1].d, stack->stack[2].d, stack->stack[3].d,
stack->stack[4].d, 0.0);
curveTo(outline, stack->stack[5].d, 0.0, stack->stack[6].d, stack->stack[7].d,
stack->stack[8].d, -(stack->stack[1].d + stack->stack[3].d + stack->stack[7].d));
stack->index = 0;
break;
}
case op_flex1: {
CHECK_STACK_TOP(op_flex1, 11);
double dx = stack->stack[0].d + stack->stack[2].d + stack->stack[4].d + stack->stack[6].d +
stack->stack[8].d;
double dy = stack->stack[1].d + stack->stack[3].d + stack->stack[5].d + stack->stack[7].d +
stack->stack[9].d;
if (fabs(dx) > fabs(dy)) {
dx = stack->stack[10].d;
dy = -dy;
} else {
dx = -dx;
dy = stack->stack[10].d;
}
curveTo(outline, stack->stack[0].d, stack->stack[1].d, stack->stack[2].d, stack->stack[3].d,
stack->stack[4].d, stack->stack[5].d);
curveTo(outline, stack->stack[6].d, stack->stack[7].d, stack->stack[8].d, stack->stack[9].d, dx,
dy);
stack->index = 0;
break;
}
case op_and: {
CHECK_STACK_TOP(op_and, 2);
double num1 = stack->stack[stack->index - 1].d;
double num2 = stack->stack[stack->index - 2].d;
stack->stack[stack->index - 2].d = (num1 && num2) ? 1.0 : 0.0;
stack->index -= 1;
break;
}
case op_or: {
CHECK_STACK_TOP(op_or, 2);
double num1 = stack->stack[stack->index - 1].d;
double num2 = stack->stack[stack->index - 2].d;
stack->stack[stack->index - 2].d = (num1 || num2) ? 1.0 : 0.0;
stack->index -= 1;
break;
}
case op_not: {
CHECK_STACK_TOP(op_not, 1);
double num = stack->stack[stack->index - 1].d;
stack->stack[stack->index - 1].d = num ? 0.0 : 1.0;
break;
}
case op_abs: {
CHECK_STACK_TOP(op_abs, 1);
double num = stack->stack[stack->index - 1].d;
stack->stack[stack->index - 1].d = (num < 0.0) ? -num : num;
break;
}
case op_add: {
CHECK_STACK_TOP(op_add, 2);
double num1 = stack->stack[stack->index - 1].d;
double num2 = stack->stack[stack->index - 2].d;
stack->stack[stack->index - 2].d = num1 + num2;
stack->index -= 1;
break;
}
case op_sub: {
CHECK_STACK_TOP(op_sub, 2);
double num1 = stack->stack[stack->index - 2].d;
double num2 = stack->stack[stack->index - 1].d;
stack->stack[stack->index - 2].d = num1 - num2;
stack->index -= 1;
break;
}
case op_div: {
CHECK_STACK_TOP(op_div, 2);
double num1 = stack->stack[stack->index - 2].d;
double num2 = stack->stack[stack->index - 1].d;
stack->stack[stack->index - 2].d = num1 / num2;
stack->index -= 1;
break;
}
case op_neg: {
CHECK_STACK_TOP(op_neg, 1);
double num = stack->stack[stack->index - 1].d;
stack->stack[stack->index - 1].d = -num;
break;
}
case op_eq: {
CHECK_STACK_TOP(op_eq, 2);
double num1 = stack->stack[stack->index - 1].d;
double num2 = stack->stack[stack->index - 2].d;
stack->stack[stack->index - 2].d = (num1 == num2) ? 1.0 : 0.0;
stack->index -= 1;
break;
}
case op_drop: {
CHECK_STACK_TOP(op_drop, 1);
stack->index -= 1;
break;
}
case op_put: {
CHECK_STACK_TOP(op_put, 2);
double val = stack->stack[stack->index - 2].d;
int32_t i = (int32_t)stack->stack[stack->index - 1].d;
stack->transient[i % type2_transient_array].d = val;
stack->index -= 2;
break;
}
case op_get: {
CHECK_STACK_TOP(op_get, 1);
int32_t i = (int32_t)stack->stack[stack->index - 1].d;
stack->stack[stack->index - 1].d = stack->transient[i % type2_transient_array].d;
break;
}
case op_ifelse: {
CHECK_STACK_TOP(op_ifelse, 4);
double v2 = stack->stack[stack->index - 1].d;
double v1 = stack->stack[stack->index - 2].d;
double s2 = stack->stack[stack->index - 3].d;
double s1 = stack->stack[stack->index - 4].d;
stack->stack[stack->index - 4].d = (v1 <= v2) ? s1 : s2;
stack->index -= 3;
break;
}
case op_random: {
// Chosen from a fair dice
// TODO: use a real randomizer
stack->stack[stack->index].t = cff_DOUBLE;
stack->stack[stack->index].d = getrand(outline);
stack->index += 1;
break;
}
case op_mul: {
CHECK_STACK_TOP(op_mul, 2);
double num1 = stack->stack[stack->index - 1].d;
double num2 = stack->stack[stack->index - 2].d;
stack->stack[stack->index - 2].d = num1 * num2;
stack->index -= 1;
break;
}
case op_sqrt: {
CHECK_STACK_TOP(op_sqrt, 1);
double num = stack->stack[stack->index - 1].d;
stack->stack[stack->index - 1].d = sqrt(num);
break;
}
case op_dup: {
CHECK_STACK_TOP(op_dup, 1);
stack->stack[stack->index] = stack->stack[stack->index - 1];
stack->index += 1;
break;
}
case op_exch: {
CHECK_STACK_TOP(op_exch, 2);
double num1 = stack->stack[stack->index - 1].d;
double num2 = stack->stack[stack->index - 2].d;
stack->stack[stack->index - 1].d = num2;
stack->stack[stack->index - 2].d = num1;
break;
}
case op_index: {
CHECK_STACK_TOP(op_index, 2);
uint8_t n = stack->index - 1;
uint8_t j = n - 1 - (uint8_t)(stack->stack[n].d) % n;
stack->stack[n] = stack->stack[j];
break;
}
case op_roll: {
CHECK_STACK_TOP(op_roll, 2);
int32_t j = stack->stack[stack->index - 1].d;
uint32_t n = stack->stack[stack->index - 2].d;
CHECK_STACK_TOP(op_roll, 2 + n);
j = -j % n;
if (j < 0) j += n;
if (!j) break;
uint8_t last = stack->index - 3;
uint8_t first = stack->index - 2 - n;
reverseStack(stack, first, last);
reverseStack(stack, last - j + 1, last);
reverseStack(stack, first, last - j);
stack->index -= 2;
break;
}
case op_return:
return;
case op_callsubr: {
CHECK_STACK_TOP(op_callsubr, 1);
uint32_t subr = (uint32_t)stack->stack[--(stack->index)].d;
cff_parseOutline(lsubr.data + lsubr.offset[lsubr_bias + subr] - 1,
lsubr.offset[lsubr_bias + subr + 1] - lsubr.offset[lsubr_bias + subr], gsubr,
lsubr, stack, outline, methods, options);
break;
}
case op_callgsubr: {
CHECK_STACK_TOP(op_callgsubr, 1);
uint32_t subr = (uint32_t)stack->stack[--(stack->index)].d;
cff_parseOutline(gsubr.data + gsubr.offset[gsubr_bias + subr] - 1,
gsubr.offset[gsubr_bias + subr + 1] - gsubr.offset[gsubr_bias + subr], gsubr,
lsubr, stack, outline, methods, options);
break;
}
}
break;
case CS2_OPERAND:
case CS2_FRACTION:
stack->stack[(stack->index)++] = val;
break;
}
start += advance;
}
}
static void lineTo(Ppolyline_t * path, double x, double y)
{
pointf curp = path->ps[path->pn - 1];
curveTo(path, curp.x, curp.y, x, y, x, y);
}
/* genEllipticPath:
* Approximate an elliptical arc via Beziers of given degree
* threshold indicates quality of approximation
* if isSlice is true, the path begins and ends with line segments
* to the center of the ellipse.
* Returned path must be freed by the caller.
*/
static Ppolyline_t *genEllipticPath(ellipse_t * ep, int degree,
double threshold, boolean isSlice)
{
double dEta;
double etaB;
double cosEtaB;
double sinEtaB;
double aCosEtaB;
double bSinEtaB;
double aSinEtaB;
double bCosEtaB;
double xB;
double yB;
double xBDot;
double yBDot;
double t;
double alpha;
Ppolyline_t *path = NEW(Ppolyline_t);
// find the number of Bezier curves needed
boolean found = FALSE;
int i, n = 1;
while ((!found) && (n < 1024)) {
double dEta = (ep->eta2 - ep->eta1) / n;
if (dEta <= 0.5 * M_PI) {
double etaB = ep->eta1;
found = TRUE;
for (i = 0; found && (i < n); ++i) {
double etaA = etaB;
etaB += dEta;
found =
(estimateError(ep, degree, etaA, etaB) <= threshold);
}
}
n = n << 1;
}
dEta = (ep->eta2 - ep->eta1) / n;
etaB = ep->eta1;
cosEtaB = cos(etaB);
sinEtaB = sin(etaB);
aCosEtaB = ep->a * cosEtaB;
bSinEtaB = ep->b * sinEtaB;
aSinEtaB = ep->a * sinEtaB;
bCosEtaB = ep->b * cosEtaB;
xB = ep->cx + aCosEtaB * ep->cosTheta - bSinEtaB * ep->sinTheta;
yB = ep->cy + aCosEtaB * ep->sinTheta + bSinEtaB * ep->cosTheta;
xBDot = -aSinEtaB * ep->cosTheta - bCosEtaB * ep->sinTheta;
yBDot = -aSinEtaB * ep->sinTheta + bCosEtaB * ep->cosTheta;
if (isSlice) {
moveTo(path, ep->cx, ep->cy);
lineTo(path, xB, yB);
} else {
moveTo(path, xB, yB);
}
t = tan(0.5 * dEta);
alpha = sin(dEta) * (sqrt(4 + 3 * t * t) - 1) / 3;
for (i = 0; i < n; ++i) {
double xA = xB;
double yA = yB;
double xADot = xBDot;
double yADot = yBDot;
etaB += dEta;
cosEtaB = cos(etaB);
sinEtaB = sin(etaB);
aCosEtaB = ep->a * cosEtaB;
bSinEtaB = ep->b * sinEtaB;
aSinEtaB = ep->a * sinEtaB;
bCosEtaB = ep->b * cosEtaB;
xB = ep->cx + aCosEtaB * ep->cosTheta - bSinEtaB * ep->sinTheta;
yB = ep->cy + aCosEtaB * ep->sinTheta + bSinEtaB * ep->cosTheta;
xBDot = -aSinEtaB * ep->cosTheta - bCosEtaB * ep->sinTheta;
yBDot = -aSinEtaB * ep->sinTheta + bCosEtaB * ep->cosTheta;
if (degree == 1) {
lineTo(path, xB, yB);
#if DO_QUAD
} else if (degree == 2) {
double k = (yBDot * (xB - xA) - xBDot * (yB - yA))
/ (xADot * yBDot - yADot * xBDot);
quadTo(path, (xA + k * xADot), (yA + k * yADot), xB, yB);
#endif
} else {
curveTo(path, (xA + alpha * xADot), (yA + alpha * yADot),
(xB - alpha * xBDot), (yB - alpha * yBDot), xB, yB);
}
}
endPath(path, isSlice);
return path;
}
//----------------------------------------------------------
void ofPath::curveTo(float x, float y){
curveTo(ofPoint(x,y,0));
}
//----------------------------------------------------------
void ofPath::curveTo(float x, float y, float z){
curveTo(glm::vec3(x,y,z));
}
void ShapeMaker::smoothCurveTo( double ax, double ay ) {
curveTo( lastx + smoothx, lasty + smoothy, ax, ay );
}
//----------------------------------------------------------
void ofPath::curveTo(const glm::vec2 & p){
curveTo(glm::vec3(p, 0.0));
}
