1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
#include <qpdf/QPDFMatrix.hh>
#include <qpdf/QUtil.hh>
QPDFMatrix::QPDFMatrix() :
a(1.0),
b(0.0),
c(0.0),
d(1.0),
e(0.0),
f(0.0)
{
}
QPDFMatrix::QPDFMatrix(double a, double b, double c,
double d, double e, double f) :
a(a),
b(b),
c(c),
d(d),
e(e),
f(f)
{
}
QPDFMatrix::QPDFMatrix(QPDFObjectHandle::Matrix const& m) :
a(m.a),
b(m.b),
c(m.c),
d(m.d),
e(m.e),
f(m.f)
{
}
std::string
QPDFMatrix::unparse() const
{
return (QUtil::double_to_string(a, 5) + " " +
QUtil::double_to_string(b, 5) + " " +
QUtil::double_to_string(c, 5) + " " +
QUtil::double_to_string(d, 5) + " " +
QUtil::double_to_string(e, 5) + " " +
QUtil::double_to_string(f, 5));
}
void
QPDFMatrix::concat(QPDFMatrix const& other)
{
double ap = (this->a * other.a) + (this->c * other.b);
double bp = (this->b * other.a) + (this->d * other.b);
double cp = (this->a * other.c) + (this->c * other.d);
double dp = (this->b * other.c) + (this->d * other.d);
double ep = (this->a * other.e) + (this->c * other.f) + this->e;
double fp = (this->b * other.e) + (this->d * other.f) + this->f;
this-> a = ap;
this-> b = bp;
this-> c = cp;
this-> d = dp;
this-> e = ep;
this-> f = fp;
}
void
QPDFMatrix::scale(double sx, double sy)
{
concat(QPDFMatrix(sx, 0, 0, sy, 0, 0));
}
void
QPDFMatrix::translate(double tx, double ty)
{
concat(QPDFMatrix(1, 0, 0, 1, tx, ty));
}
void
QPDFMatrix::rotatex90(int angle)
{
switch (angle)
{
case 90:
concat(QPDFMatrix(0, 1, -1, 0, 0, 0));
break;
case 180:
concat(QPDFMatrix(-1, 0, 0, -1, 0, 0));
break;
case 270:
concat(QPDFMatrix(0, -1, 1, 0, 0, 0));
break;
default:
// ignore
break;
}
}
void
QPDFMatrix::transform(double x, double y, double& xp, double& yp)
{
xp = (this->a * x) + (this->c * y) + this->e;
yp = (this->b * x) + (this->d * y) + this->f;
}
|
