本文整理汇总了C++中WindowProjection::SetScaleFromRadius方法的典型用法代码示例。如果您正苦于以下问题：C++ WindowProjection::SetScaleFromRadius方法的具体用法？C++ WindowProjection::SetScaleFromRadius怎么用？C++ WindowProjection::SetScaleFromRadius使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类WindowProjection的用法示例。
在下文中一共展示了WindowProjection::SetScaleFromRadius方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: OnPaint
virtual void OnPaint(Canvas &canvas) override {
canvas.ClearWhite();
const GeoPoint a(Angle::Degrees(7.70722),
Angle::Degrees(51.052));
const GeoPoint b(Angle::Degrees(11.5228),
Angle::Degrees(50.3972));
WindowProjection projection;
projection.SetScreenOrigin(canvas.GetWidth() / 2, canvas.GetHeight() / 2);
projection.SetGeoLocation(a.Middle(b));
projection.SetScreenSize(canvas.GetSize());
projection.SetScaleFromRadius(fixed(400000));
projection.UpdateScreenBounds();
canvas.SelectBlackPen();
canvas.SelectHollowBrush();
RasterPoint pa = projection.GeoToScreen(a);
canvas.DrawCircle(pa.x, pa.y, 4);
RasterPoint pb = projection.GeoToScreen(b);
canvas.DrawCircle(pb.x, pb.y, 4);
RenderFAISector(canvas, projection, a, b, false, settings);
}示例2: main
int main(int argc, char **argv)
{
if (argc != 2) {
fprintf(stderr, "Usage: %s PATH\n", argv[0]);
return 1;
}
const char *map_path = argv[1];
TCHAR jp2_path[4096];
_tcscpy(jp2_path, PathName(map_path));
_tcscat(jp2_path, _T(DIR_SEPARATOR_S) _T("terrain.jp2"));
TCHAR j2w_path[4096];
_tcscpy(j2w_path, PathName(map_path));
_tcscat(j2w_path, _T(DIR_SEPARATOR_S) _T("terrain.j2w"));
NullOperationEnvironment operation;
RasterMap map(jp2_path, j2w_path, NULL, operation);
if (!map.isMapLoaded()) {
fprintf(stderr, "failed to load map\n");
return EXIT_FAILURE;
}
do {
map.SetViewCenter(map.GetMapCenter(), fixed(50000));
} while (map.IsDirty());
fixed radius = fixed(50000);
WindowProjection projection;
projection.SetScreenSize(640, 480);
projection.SetScaleFromRadius(radius);
projection.SetGeoLocation(map.GetMapCenter());
projection.SetScreenOrigin(320, 240);
projection.UpdateScreenBounds();
HeightMatrix matrix;
matrix.Fill(map, projection, 1, false);
return EXIT_SUCCESS;
}