tmathtext.C

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/// \file
/// \ingroup tutorial_graphics
/// This macro draws various formula in a canvas.
/// It also prints the canvas as a Postscript file using TMathText.
///
/// \macro_image
/// \macro_code
///
/// \author Yue Shi Lai
 
{
   TCanvas *c1 = new TCanvas("c1");
 
   TMathText l;
   l.SetTextAlign(23);
   l.SetTextSize(0.06);
   l.DrawMathText(0.50, 1.000, "\prod_{j\ge0} \left(\sum_{k\ge0} a_{jk}z^k\right) = \sum_{n\ge0} z^n \left(\sum_{k_0,k_1,\ldots\ge0\atop k_0+k_1+\cdots=n} a_{0k_0}a_{1k_1} \cdots \right)");
   l.DrawMathText(0.50, 0.800, "W_{\delta_1\rho_1\sigma_2}^{3\beta} = U_{\delta_1\rho_1\sigma_2}^{3\beta} + {1\over 8\pi^2} \int_{\alpha_1}^{\alpha_2} d\alpha_2^\prime \left[ {U_{\delta_1\rho_1}^{2\beta} - \alpha_2^\prime U_{\rho_1\sigma_2}^{1\beta} \over U_{\rho_1\sigma_2}^{0\beta}} \right]");
   l.DrawMathText(0.50, 0.600, "d\Gamma = {1\over 2m_A} \left( \prod_f {d^3p_f\over (2\pi)^3} {1\over 2E_f} \right) \left| \mathscr{M} \left(m_A - \left\{p_f\right\} \right) \right|^2 (2\pi)^4 \delta^{(4)} \left(p_A - \sum p_f \right)");
   l.DrawMathText(0.50, 0.425, "4\mathrm{Re}\left\{{2\over 1-\Delta\alpha} \chi(s) \left[ \^{g}_\nu^e \^{g}_\nu^f (1 + \cos^2\theta) + \^{g}_a^e \^{g}_a^f \cos\theta \right] \right\}");
   l.DrawMathText(0.50, 0.330, "p(n) = {1\over\pi\sqrt{2}} \sum_{k = 1}^\infty \sqrt{k} A_k(n) {d\over dn} {\sinh \left\{ {\pi\over k} \sqrt{2\over 3} \sqrt{n - {1\over 24}} \right\} \over \sqrt{n - {1\over 24}}}");
   l.DrawMathText(0.13, 0.150, "{(\ell+1)C_{\ell}^{TE} \over 2\pi}");
   l.DrawMathText(0.27, 0.110, "\mathbb{N} \subset \mathbb{R}");
   l.DrawMathText(0.63, 0.100, "\hbox{RHIC スピン物理 Нью-Йорк}");
 
   c1->Print("c1.png");
   c1->Print("c1.ps");
 
   return c1;
}