void CFDE_Path::ArcTo(FX_BOOL bStart,
const CFX_RectF& rect,
FX_FLOAT startAngle,
FX_FLOAT endAngle) {
FX_FLOAT rx = rect.width / 2;
FX_FLOAT ry = rect.height / 2;
FX_FLOAT cx = rect.left + rx;
FX_FLOAT cy = rect.top + ry;
FX_FLOAT alpha =
FXSYS_atan2(rx * FXSYS_sin(startAngle), ry * FXSYS_cos(startAngle));
FX_FLOAT beta =
FXSYS_atan2(rx * FXSYS_sin(endAngle), ry * FXSYS_cos(endAngle));
if (FXSYS_fabs(beta - alpha) > FX_PI) {
if (beta > alpha)
beta -= 2 * FX_PI;
else
alpha -= 2 * FX_PI;
}
FX_FLOAT half_delta = (beta - alpha) / 2;
FX_FLOAT bcp = 4.0f / 3 * (1 - FXSYS_cos(half_delta)) / FXSYS_sin(half_delta);
FX_FLOAT sin_alpha = FXSYS_sin(alpha);
FX_FLOAT sin_beta = FXSYS_sin(beta);
FX_FLOAT cos_alpha = FXSYS_cos(alpha);
FX_FLOAT cos_beta = FXSYS_cos(beta);
if (bStart)
MoveTo(CFX_PointF(cx + rx * cos_alpha, cy + ry * sin_alpha));
BezierTo(CFX_PointF(cx + rx * (cos_alpha - bcp * sin_alpha),
cy + ry * (sin_alpha + bcp * cos_alpha)),
CFX_PointF(cx + rx * (cos_beta + bcp * sin_beta),
cy + ry * (sin_beta - bcp * cos_beta)),
CFX_PointF(cx + rx * cos_beta, cy + ry * sin_beta));
}
void CFX_PathGenerator::ArcTo(FX_FLOAT x,
FX_FLOAT y,
FX_FLOAT width,
FX_FLOAT height,
FX_FLOAT start_angle,
FX_FLOAT sweep_angle) {
FX_FLOAT x0 = FXSYS_cos(sweep_angle / 2);
FX_FLOAT y0 = FXSYS_sin(sweep_angle / 2);
FX_FLOAT tx = FXSYS_Div((1.0f - x0) * 4, 3 * 1.0f);
FX_FLOAT ty = y0 - FXSYS_Div(FXSYS_Mul(tx, x0), y0);
FX_FLOAT px[3], py[3];
px[0] = x0 + tx;
py[0] = -ty;
px[1] = x0 + tx;
py[1] = ty;
FX_FLOAT sn = FXSYS_sin(start_angle + sweep_angle / 2);
FX_FLOAT cs = FXSYS_cos(start_angle + sweep_angle / 2);
int old_count = m_pPathData->GetPointCount();
m_pPathData->AddPointCount(3);
FX_FLOAT bezier_x, bezier_y;
bezier_x = x + FXSYS_Mul(width, FXSYS_Mul(px[0], cs) - FXSYS_Mul(py[0], sn));
bezier_y = y + FXSYS_Mul(height, FXSYS_Mul(px[0], sn) + FXSYS_Mul(py[0], cs));
m_pPathData->SetPoint(old_count, bezier_x, bezier_y, FXPT_BEZIERTO);
bezier_x = x + FXSYS_Mul(width, FXSYS_Mul(px[1], cs) - FXSYS_Mul(py[1], sn));
bezier_y = y + FXSYS_Mul(height, FXSYS_Mul(px[1], sn) + FXSYS_Mul(py[1], cs));
m_pPathData->SetPoint(old_count + 1, bezier_x, bezier_y, FXPT_BEZIERTO);
bezier_x = x + FXSYS_Mul(width, FXSYS_cos(start_angle + sweep_angle)),
bezier_y = y + FXSYS_Mul(height, FXSYS_sin(start_angle + sweep_angle));
m_pPathData->SetPoint(old_count + 2, bezier_x, bezier_y, FXPT_BEZIERTO);
}
void CFX_PathGenerator::ArcTo(FX_FLOAT x,
FX_FLOAT y,
FX_FLOAT width,
FX_FLOAT height,
FX_FLOAT start_angle,
FX_FLOAT sweep_angle) {
FX_FLOAT x0 = FXSYS_cos(sweep_angle / 2);
FX_FLOAT y0 = FXSYS_sin(sweep_angle / 2);
FX_FLOAT tx = ((1.0f - x0) * 4) / (3 * 1.0f);
FX_FLOAT ty = y0 - ((tx * x0) / y0);
FX_FLOAT px[3], py[3];
px[0] = x0 + tx;
py[0] = -ty;
px[1] = x0 + tx;
py[1] = ty;
FX_FLOAT sn = FXSYS_sin(start_angle + sweep_angle / 2);
FX_FLOAT cs = FXSYS_cos(start_angle + sweep_angle / 2);
int old_count = m_pPathData->GetPointCount();
m_pPathData->AddPointCount(3);
FX_FLOAT bezier_x, bezier_y;
bezier_x = x + (width * ((px[0] * cs) - (py[0] * sn)));
bezier_y = y + (height * ((px[0] * sn) + (py[0] * cs)));
m_pPathData->SetPoint(old_count, bezier_x, bezier_y, FXPT_BEZIERTO);
bezier_x = x + (width * ((px[1] * cs) - (py[1] * sn)));
bezier_y = y + (height * ((px[1] * sn) + (py[1] * cs)));
m_pPathData->SetPoint(old_count + 1, bezier_x, bezier_y, FXPT_BEZIERTO);
bezier_x = x + (width * FXSYS_cos(start_angle + sweep_angle));
bezier_y = y + (height * FXSYS_sin(start_angle + sweep_angle));
m_pPathData->SetPoint(old_count + 2, bezier_x, bezier_y, FXPT_BEZIERTO);
}
void CFX_Matrix::Rotate(FX_FLOAT fRadian, FX_BOOL bPrepended) {
FX_FLOAT cosValue = FXSYS_cos(fRadian);
FX_FLOAT sinValue = FXSYS_sin(fRadian);
CFX_Matrix m;
m.Set(cosValue, sinValue, -sinValue, cosValue, 0, 0);
if (bPrepended) {
FXCRT_Matrix_Concat(*this, m, *this);
} else {
FXCRT_Matrix_Concat(*this, *this, m);
}
}
void CFX_PathGenerator::AddArc(FX_FLOAT x,
FX_FLOAT y,
FX_FLOAT width,
FX_FLOAT height,
FX_FLOAT start_angle,
FX_FLOAT sweep_angle) {
if (sweep_angle == 0) {
return;
}
const FX_FLOAT bezier_arc_angle_epsilon = 0.01f;
while (start_angle > FX_PI * 2) {
start_angle -= FX_PI * 2;
}
while (start_angle < 0) {
start_angle += FX_PI * 2;
}
if (sweep_angle >= FX_PI * 2) {
sweep_angle = FX_PI * 2;
}
if (sweep_angle <= -FX_PI * 2) {
sweep_angle = -FX_PI * 2;
}
m_pPathData->AddPointCount(1);
m_pPathData->SetPoint(m_pPathData->GetPointCount() - 1,
x + (width * FXSYS_cos(start_angle)),
y + (height * FXSYS_sin(start_angle)), FXPT_MOVETO);
FX_FLOAT total_sweep = 0, local_sweep = 0, prev_sweep = 0;
bool done = false;
do {
if (sweep_angle < 0) {
prev_sweep = total_sweep;
local_sweep = -FX_PI / 2;
total_sweep -= FX_PI / 2;
if (total_sweep <= sweep_angle + bezier_arc_angle_epsilon) {
local_sweep = sweep_angle - prev_sweep;
done = true;
}
} else {
prev_sweep = total_sweep;
local_sweep = FX_PI / 2;
total_sweep += FX_PI / 2;
if (total_sweep >= sweep_angle - bezier_arc_angle_epsilon) {
local_sweep = sweep_angle - prev_sweep;
done = true;
}
}
ArcTo(x, y, width, height, start_angle, local_sweep);
start_angle += local_sweep;
} while (!done);
}
void CFX_PathGenerator::AddPie(FX_FLOAT x,
FX_FLOAT y,
FX_FLOAT width,
FX_FLOAT height,
FX_FLOAT start_angle,
FX_FLOAT sweep_angle) {
if (sweep_angle == 0) {
int old_count = m_pPathData->GetPointCount();
m_pPathData->AddPointCount(2);
m_pPathData->SetPoint(old_count, x, y, FXPT_MOVETO);
m_pPathData->SetPoint(old_count + 1, x + (width * FXSYS_cos(start_angle)),
y + (height * FXSYS_sin(start_angle)), FXPT_LINETO);
return;
}
AddArc(x, y, width, height, start_angle, sweep_angle);
m_pPathData->AddPointCount(1);
m_pPathData->SetPoint(m_pPathData->GetPointCount() - 1, x, y,
FXPT_LINETO | FXPT_CLOSEFIGURE);
}
FX_BOOL CPDF_PSEngine::DoOperator(PDF_PSOP op) {
int i1, i2;
FX_FLOAT d1, d2;
switch (op) {
case PSOP_ADD:
d1 = Pop();
d2 = Pop();
Push(d1 + d2);
break;
case PSOP_SUB:
d2 = Pop();
d1 = Pop();
Push(d1 - d2);
break;
case PSOP_MUL:
d1 = Pop();
d2 = Pop();
Push(d1 * d2);
break;
case PSOP_DIV:
d2 = Pop();
d1 = Pop();
Push(d1 / d2);
break;
case PSOP_IDIV:
i2 = (int)Pop();
i1 = (int)Pop();
Push(i2 ? i1 / i2 : 0);
break;
case PSOP_MOD:
i2 = (int)Pop();
i1 = (int)Pop();
Push(i2 ? i1 % i2 : 0);
break;
case PSOP_NEG:
d1 = Pop();
Push(-d1);
break;
case PSOP_ABS:
d1 = Pop();
Push((FX_FLOAT)FXSYS_fabs(d1));
break;
case PSOP_CEILING:
d1 = Pop();
Push((FX_FLOAT)FXSYS_ceil(d1));
break;
case PSOP_FLOOR:
d1 = Pop();
Push((FX_FLOAT)FXSYS_floor(d1));
break;
case PSOP_ROUND:
d1 = Pop();
Push(FXSYS_round(d1));
break;
case PSOP_TRUNCATE:
i1 = (int)Pop();
Push(i1);
break;
case PSOP_SQRT:
d1 = Pop();
Push((FX_FLOAT)FXSYS_sqrt(d1));
break;
case PSOP_SIN:
d1 = Pop();
Push((FX_FLOAT)FXSYS_sin(d1 * FX_PI / 180.0f));
break;
case PSOP_COS:
d1 = Pop();
Push((FX_FLOAT)FXSYS_cos(d1 * FX_PI / 180.0f));
break;
case PSOP_ATAN:
d2 = Pop();
d1 = Pop();
d1 = (FX_FLOAT)(FXSYS_atan2(d1, d2) * 180.0 / FX_PI);
if (d1 < 0) {
d1 += 360;
}
Push(d1);
break;
case PSOP_EXP:
d2 = Pop();
d1 = Pop();
Push((FX_FLOAT)FXSYS_pow(d1, d2));
break;
case PSOP_LN:
d1 = Pop();
Push((FX_FLOAT)FXSYS_log(d1));
break;
case PSOP_LOG:
d1 = Pop();
Push((FX_FLOAT)FXSYS_log10(d1));
break;
case PSOP_CVI:
i1 = (int)Pop();
Push(i1);
break;
case PSOP_CVR:
break;
case PSOP_EQ:
d2 = Pop();
d1 = Pop();
Push((int)(d1 == d2));
break;
case PSOP_NE:
d2 = Pop();
d1 = Pop();
Push((int)(d1 != d2));
break;
case PSOP_GT:
d2 = Pop();
d1 = Pop();
Push((int)(d1 > d2));
break;
case PSOP_GE:
d2 = Pop();
d1 = Pop();
Push((int)(d1 >= d2));
break;
case PSOP_LT:
d2 = Pop();
d1 = Pop();
Push((int)(d1 < d2));
break;
case PSOP_LE:
d2 = Pop();
d1 = Pop();
Push((int)(d1 <= d2));
break;
case PSOP_AND:
i1 = (int)Pop();
i2 = (int)Pop();
Push(i1 & i2);
break;
case PSOP_OR:
i1 = (int)Pop();
i2 = (int)Pop();
Push(i1 | i2);
break;
case PSOP_XOR:
i1 = (int)Pop();
i2 = (int)Pop();
Push(i1 ^ i2);
break;
case PSOP_NOT:
i1 = (int)Pop();
Push((int)!i1);
break;
case PSOP_BITSHIFT: {
int shift = (int)Pop();
int i = (int)Pop();
if (shift > 0) {
Push(i << shift);
} else {
Push(i >> -shift);
}
break;
}
case PSOP_TRUE:
Push(1);
break;
case PSOP_FALSE:
Push(0);
break;
case PSOP_POP:
Pop();
break;
case PSOP_EXCH:
d2 = Pop();
d1 = Pop();
Push(d2);
Push(d1);
break;
case PSOP_DUP:
d1 = Pop();
Push(d1);
Push(d1);
break;
case PSOP_COPY: {
int n = static_cast<int>(Pop());
if (n < 0 || m_StackCount + n > PSENGINE_STACKSIZE ||
n > static_cast<int>(m_StackCount))
break;
for (int i = 0; i < n; i++)
m_Stack[m_StackCount + i] = m_Stack[m_StackCount + i - n];
m_StackCount += n;
break;
}
case PSOP_INDEX: {
int n = static_cast<int>(Pop());
if (n < 0 || n >= static_cast<int>(m_StackCount))
break;
Push(m_Stack[m_StackCount - n - 1]);
break;
}
case PSOP_ROLL: {
int j = static_cast<int>(Pop());
int n = static_cast<int>(Pop());
if (m_StackCount == 0)
break;
if (n < 0 || n > static_cast<int>(m_StackCount))
break;
if (j < 0) {
for (int i = 0; i < -j; i++) {
FX_FLOAT first = m_Stack[m_StackCount - n];
for (int ii = 0; ii < n - 1; ii++)
m_Stack[m_StackCount - n + ii] = m_Stack[m_StackCount - n + ii + 1];
m_Stack[m_StackCount - 1] = first;
}
} else {
for (int i = 0; i < j; i++) {
FX_FLOAT last = m_Stack[m_StackCount - 1];
int ii;
for (ii = 0; ii < n - 1; ii++)
m_Stack[m_StackCount - ii - 1] = m_Stack[m_StackCount - ii - 2];
m_Stack[m_StackCount - ii - 1] = last;
}
}
break;
}
default:
break;
}
return TRUE;
}
void CFX_PathGenerator::AddArc(FX_FLOAT x,
FX_FLOAT y,
FX_FLOAT width,
FX_FLOAT height,
FX_FLOAT start_angle,
FX_FLOAT sweep_angle) {
#if 0
FX_FIXFLOAT32 sweep = sweep_angle;
while (sweep > FIXFLOAT32_PI * 2) {
sweep -= FIXFLOAT32_PI * 2;
}
if (sweep == 0) {
return;
}
m_pPathData->AddPointCount(1);
m_pPathData->SetPoint(m_pPathData->GetPointCount() - 1,
x + fixmul_8_32_to_8(width, fixcos(start_angle)),
y + fixmul_8_32_to_8(height, fixsin(start_angle)), FXPT_MOVETO);
FX_FIXFLOAT32 angle1 = 0, angle2;
FX_BOOL bDone = FALSE;
do {
angle2 = angle1 + FIXFLOAT32_PI / 2;
if (angle2 >= sweep) {
angle2 = sweep;
bDone = TRUE;
}
ArcTo(x, y, width, height, start_angle + angle1, angle2 - angle1);
angle1 = angle2;
} while (!bDone);
#else
if (sweep_angle == 0) {
return;
}
static const FX_FLOAT bezier_arc_angle_epsilon = (FX_FLOAT)(0.01f);
while (start_angle > FX_PI * 2) {
start_angle -= FX_PI * 2;
}
while (start_angle < 0) {
start_angle += FX_PI * 2;
}
if (sweep_angle >= FX_PI * 2) {
sweep_angle = FX_PI * 2;
}
if (sweep_angle <= -FX_PI * 2) {
sweep_angle = -FX_PI * 2;
}
m_pPathData->AddPointCount(1);
m_pPathData->SetPoint(m_pPathData->GetPointCount() - 1,
x + FXSYS_Mul(width, FXSYS_cos(start_angle)),
y + FXSYS_Mul(height, FXSYS_sin(start_angle)),
FXPT_MOVETO);
FX_FLOAT total_sweep = 0, local_sweep = 0, prev_sweep = 0;
FX_BOOL done = FALSE;
do {
if (sweep_angle < 0) {
prev_sweep = total_sweep;
local_sweep = -FX_PI / 2;
total_sweep -= FX_PI / 2;
if (total_sweep <= sweep_angle + bezier_arc_angle_epsilon) {
local_sweep = sweep_angle - prev_sweep;
done = TRUE;
}
} else {
prev_sweep = total_sweep;
local_sweep = FX_PI / 2;
total_sweep += FX_PI / 2;
if (total_sweep >= sweep_angle - bezier_arc_angle_epsilon) {
local_sweep = sweep_angle - prev_sweep;
done = TRUE;
}
}
ArcTo(x, y, width, height, start_angle, local_sweep);
start_angle += local_sweep;
} while (!done);
#endif
}
