From 789895b4b9f99668b8b772f271d07d1ce3115742 Mon Sep 17 00:00:00 2001 From: chai Date: Fri, 5 Oct 2018 15:40:31 +0800 Subject: *update --- src/libjin/math/matrix.cpp | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'src/libjin/math/matrix.cpp') diff --git a/src/libjin/math/matrix.cpp b/src/libjin/math/matrix.cpp index 39042f0..a80f37a 100644 --- a/src/libjin/math/matrix.cpp +++ b/src/libjin/math/matrix.cpp @@ -8,6 +8,8 @@ namespace jin namespace math { + const Matrix Matrix::Identity; + // | e0 e4 e8 e12 | // | e1 e5 e9 e13 | // | e2 e6 e10 e14 | @@ -22,6 +24,21 @@ namespace math { } + void Matrix::setOrtho(float l, float r, float b, float t, float n, float f) + { + float w = r - l; + float h = t - b; + float z = f - n; + setIdentity(); + e[0] = 2 / w; + e[5] = 2 / h; + e[10] = -2 / z; + e[12] = -(r + l) / w; + e[13] = -(t + b) / h; + e[14] = -(f + n) / z; + e[15] = 1; + } + // | e0 e4 e8 e12 | // | e1 e5 e9 e13 | // | e2 e6 e10 e14 | -- cgit v1.1-26-g67d0