plots3D/map.cpp at main · annov723/plots3D · GitHub

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
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
#include "map.h"
#include < time.h>

void Map::getRanges(double xmi, double xma, double ymi, double yma, double zmi, double zma)
{
	xmin = xmi;
	xmax = xma;
	ymin = ymi;
	ymax = yma;
	zmin = zmi;
	zmax = zma;
}

void Map::repaint(wxPanel * drawingPanel, int w, int h)
{
	wxClientDC DC(drawingPanel);
	wxBufferedDC BufferedDC(&DC);
	int width = w;
	int height = h;
	BufferedDC.SetBackground(wxBrush(wxColour("white")));
	BufferedDC.Clear();

	for (int x = 0; x < w; x += 2) {

		for (int y = 0; y < h; y += 2) {

			BufferedDC.SetPen(wxPen(wxColour(pixelColors[x][y].R, pixelColors[x][y].G, pixelColors[x][y].B)));
			BufferedDC.DrawRectangle(x, y, 2, 2);
		}
	}

	BufferedDC.SetPen(*wxBLACK_PEN);
	BufferedDC.SetBrush(*wxTRANSPARENT_BRUSH);

	std::vector<std::array<wxPoint, 2>> contours;
	for (int i = 1; i <= 9; i++) {
		double threshold = zmin + i * (zmax - zmin) / (double)(9 + 1);
		for (int x = 1; x < width - 1; x++) {
			for (int y = 1; y < height - 1; y++) {
				int code = (values[x - 1][y + 1] > threshold ? 1 : 0) +
					(values[x + 1][y + 1] > threshold ? 1 : 0) * 2 +
					(values[x + 1][y - 1] > threshold ? 1 : 0) * 4 +
					(values[x - 1][y - 1] > threshold ? 1 : 0) * 8;

				if (values[x][y] < threshold) {
					if (code == 5) code = 10;
					if (code == 10) code = 5;
				}

				switch (code) {
				case 1:
				case 14:
					contours.push_back(std::array<wxPoint, 2> { wxPoint(x - 1, y), wxPoint(x, y + 1) });
					break;
				case 2:
				case 13:
					contours.push_back(std::array<wxPoint, 2> { wxPoint(x + 1, y), wxPoint(x, y + 1) });
					break;
				case 3:
				case 12:
					contours.push_back(std::array<wxPoint, 2> { wxPoint(x - 1, y), wxPoint(x + 1, y) });
					break;
				case 4:
				case 11:
					contours.push_back(std::array<wxPoint, 2> { wxPoint(x, y - 1), wxPoint(x + 1, y) });
					break;
				case 5:
					contours.push_back(std::array<wxPoint, 2> { wxPoint(x + 1, y), wxPoint(x, y + 1) });
					contours.push_back(std::array<wxPoint, 2> { wxPoint(x - 1, y), wxPoint(x, y - 1) });
					break;
				case 10:
					contours.push_back(std::array<wxPoint, 2> { wxPoint(x - 1, y), wxPoint(x, y + 1) });
					contours.push_back(std::array<wxPoint, 2> { wxPoint(x + 1, y), wxPoint(x, y - 1) });
					break;
				case 6:
				case 9:
					contours.push_back(std::array<wxPoint, 2> { wxPoint(x, y - 1), wxPoint(x, y + 1) });
					break;
				case 7:
				case 8:
					contours.push_back(std::array<wxPoint, 2> { wxPoint(x - 1, y), wxPoint(x, y - 1) });
					break;
				}
			}
		}
		for (auto& item : contours)
			BufferedDC.DrawLine(item[0], item[1]);
	}
}

Map::Color Map::evaluateColor(double value) {

	if (value > zmax || value < zmin) {

		return Color(255, 255, 255);
	}
	value = max(min(value, zmax), zmin);

	value -= zmin;

	value /= (zmax-zmin);

	return Color(255 * value, 0, 255 * (1. - value));
}

void Map::prepareData(const vector<vector<double>>&funValues, int width, int height, string function)
{
	double x, y;
	te_variable vars[] = { {"x", &x}, {"y", &y} };

	const char* c = function.c_str();

	int err;
	te_expr* expr = te_compile(c, vars, 2, &err);

	int sample = 50;

	double movex = (double)(xmax - xmin) / width;
	double movey = (double)(ymax - ymin) / height;

	values.clear();
	pixelColors.clear();

	vector < double > tempVec;
	vector <Color> tempVecColor;

	for (double xi = xmin; xi <= (xmax); xi += movex) {

		for (double yi = ymin; yi <= (ymax); yi += movey) {

			x = xi;
			y = yi;

			tempVec.push_back(te_eval(expr));
			tempVecColor.push_back(evaluateColor(tempVec.back()));
		}

		values.push_back(tempVec);
		tempVec.clear();
		pixelColors.push_back(tempVecColor);
		tempVecColor.clear();
	}

}