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
|
// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkContext2D.h"
#include "vtkContextItem.h"
#include "vtkContextScene.h"
#include "vtkContextView.h"
#include "vtkGL2PSExporter.h"
#include "vtkIntArray.h"
#include "vtkNew.h"
#include "vtkObjectFactory.h"
#include "vtkPath.h"
#include "vtkPen.h"
#include "vtkPoints.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkRenderer.h"
#include "vtkTestingInteractor.h"
#include "vtkTextProperty.h"
//------------------------------------------------------------------------------
class GL2PSMathTextOutputTest : public vtkContextItem
{
public:
static GL2PSMathTextOutputTest* New();
vtkTypeMacro(GL2PSMathTextOutputTest, vtkContextItem);
// Paint event for the chart, called whenever the chart needs to be drawn
bool Paint(vtkContext2D* painter) override;
};
//------------------------------------------------------------------------------
int TestGL2PSMathTextOutput(int, char*[])
{
// Set up a 2D context view, context test object and add it to the scene
vtkNew<vtkContextView> view;
view->GetRenderer()->SetBackground(1.0, 1.0, 1.0);
view->GetRenderWindow()->SetSize(800, 160);
vtkNew<GL2PSMathTextOutputTest> test;
view->GetScene()->AddItem(test);
view->GetRenderWindow()->SetMultiSamples(0);
view->GetInteractor()->Initialize();
view->GetInteractor()->Start();
vtkNew<vtkGL2PSExporter> exp;
exp->SetRenderWindow(view->GetRenderWindow());
exp->SetFileFormatToPS();
exp->CompressOff();
exp->SetSortToBSP();
exp->DrawBackgroundOn();
exp->Write3DPropsAsRasterImageOff();
std::string fileprefix =
vtkTestingInteractor::TempDirectory + std::string("/TestGL2PSMathTextOutput");
exp->SetFilePrefix(fileprefix.c_str());
exp->Write();
return EXIT_SUCCESS;
}
// Make our new derived class to draw a diagram
vtkStandardNewMacro(GL2PSMathTextOutputTest);
// This function aims to test the primitives provided by the 2D API.
bool GL2PSMathTextOutputTest::Paint(vtkContext2D* painter)
{
painter->GetTextProp()->SetColor(.7, .4, .5);
painter->GetTextProp()->SetFontSize(30);
painter->DrawString(20, 100, "Bezier curve");
painter->DrawMathTextString(20, 120, "$\\mathfrak{B\\'ezier\\/curve}:$");
painter->GetTextProp()->SetFontSize(25);
painter->DrawMathTextString(40, 20,
"$B_{[0,n]}(t) = \\sum_{j=0}^{n}\\/t^j"
"\\left["
"\\frac{n!}{(n-j)!}\\sum_{i=0}^{j}\\/"
"\\frac{(-1)^{i+j}P_i}{i!(j-i)!}"
"\\right] = "
"(1-t)B_{[0,n-1]}(t) + tB_{[1,n]}(t)$");
return true;
}
|
