int main(int argc, char *argv[])
{
// The value to display on the meter
double value = 85;
// Create an AugularMeter object of size 70 x 90 pixels, using black background
// with a 2 pixel 3D depressed border.
AngularMeter *m = new AngularMeter(70, 90, 0, 0, -2);
// Use white on black color palette for default text and line colors
m->setColors(Chart::whiteOnBlackPalette);
// Set the meter center at (10, 45), with radius 50 pixels, and span from 135 to
// 45 degress
m->setMeter(10, 45, 50, 135, 45);
// Set meter scale from 0 - 100, with the specified labels
const char * pattern1[] = {"E", " ", " ", " ", "F"};
m->setScale(0, 100, StringArray(pattern1, sizeof(pattern1)/sizeof(pattern1[0])));
// Set the angular arc and major tick width to 2 pixels
m->setLineWidth(2, 2);
// Add a red zone at 0 - 15
m->addZone(0, 15, 0xff3333);
// Add an icon at (25, 35)
m->addText(25, 35, "<*img=gas.gif*>");
// Add a yellow (ffff00) pointer at the specified value
m->addPointer(value, 0xffff00);
// Output the chart
m->makeChart("iconameter.png");
//free up resources
delete m;
return 0;
}
void createChart(int img, const char *filename)
{
// The value to display on the meter
double value = 4.75;
// Create an AugularMeter object of size 110 x 110 pixels, using silver
// background color with a black 2 pixel 3D depressed border.
AngularMeter *m = new AngularMeter(110, 110, Chart::silverColor(), 0x000000, -2);
// Set meter appearance according to a parameter
if (img == 0) {
// Set the meter center at bottom left corner (15, 95), with radius 85
// pixels. Meter spans from 90 - 0 degrees.
m->setMeter(15, 95, 85, 90, 0);
// Add a label to the meter centered at (35, 75)
m->addText(35, 75, "VDC", "arialbd.ttf", 12, Chart::TextColor, Chart::Center)
;
// Add a text box to show the value at top right corner (103, 7)
m->addText(103, 7, m->formatValue(value, "2"), "arial.ttf", 8, 0xffffff,
Chart::TopRight)->setBackground(0, 0, -1);
} else if (img == 1) {
// Set the meter center at top left corner (15, 15), with radius 85 pixels.
// Meter spans from 90 - 180 degrees.
m->setMeter(15, 15, 85, 90, 180);
// Add a label to the meter centered at (35, 35)
m->addText(35, 35, "AMP", "arialbd.ttf", 12, Chart::TextColor, Chart::Center)
;
// Add a text box to show the value at bottom right corner (103, 103)
m->addText(103, 103, m->formatValue(value, "2"), "arial.ttf", 8, 0xffffff,
Chart::BottomRight)->setBackground(0, 0, -1);
} else if (img == 2) {
// Set the meter center at top right corner (15, 95), with radius 85 pixels.
// Meter spans from 270 - 180 degrees.
m->setMeter(95, 15, 85, 270, 180);
// Add a label to the meter centered at (75, 35)
m->addText(75, 35, "KW", "arialbd.ttf", 12, Chart::TextColor, Chart::Center);
// Add a text box to show the value at bottom left corner (7, 103)
m->addText(7, 103, m->formatValue(value, "2"), "arial.ttf", 8, 0xffffff,
Chart::BottomLeft)->setBackground(0, 0, -1);
} else {
// Set the meter center at bottom right corner (95, 95), with radius 85
// pixels. Meter spans from 270 - 360 degrees.
m->setMeter(95, 95, 85, 270, 360);
// Add a label to the meter centered at (75, 75)
m->addText(75, 75, "RPM", "arialbd.ttf", 12, Chart::TextColor, Chart::Center)
;
// Add a text box to show the value at top left corner (7, 7)
m->addText(7, 7, m->formatValue(value, "2"), "arial.ttf", 8, 0xffffff,
Chart::TopLeft)->setBackground(0, 0, -1);
}
// Meter scale is 0 - 10, with a major tick every 2 units, and minor tick every 1
// unit
m->setScale(0, 10, 2, 1);
// Set 0 - 6 as green (99ff99) zone, 6 - 8 as yellow (ffff00) zone, and 8 - 10 as
// red (ff3333) zone
m->addZone(0, 6, 0x99ff99, 0x808080);
m->addZone(6, 8, 0xffff00, 0x808080);
m->addZone(8, 10, 0xff3333, 0x808080);
// Add a semi-transparent black (80000000) pointer at the specified value
m->addPointer(value, 0x80000000);
// Output the chart
m->makeChart(filename);
//free up resources
delete m;
}