LOVE/love-android
1
0
Fork 0
mirror of https://github.com/love2d/love-android.git synced 2026-08-18 11:44:13 +02:00
Code Issues Packages Projects Releases Wiki Activity

Updated to latest love-android code (b615972822cb)

Browse Source
This commit is contained in:
fysx
2015-08-13 17:21:53 +02:00
parent f3dd769e98
commit 9cbddc2f5e
50 changed files with 827 additions and 663 deletions
Download Patch File Download Diff File Expand all files Collapse all files
jni/love/src/common/Matrix.cpp
+24
View File
@@ -221,6 +221,11 @@ Matrix3::Matrix3(const Matrix4 &mat4)
e[8] = mat4elems[10];
}
Matrix3::Matrix3(float x, float y, float angle, float sx, float sy, float ox, float oy, float kx, float ky)
{
setTransformation(x, y, angle, sx, sy, ox, oy, kx, ky);
}
Matrix3::~Matrix3()
{
}
@@ -288,4 +293,23 @@ Matrix3 Matrix3::transposedInverse() const
return m;
}
void Matrix3::setTransformation(float x, float y, float angle, float sx, float sy, float ox, float oy, float kx, float ky)
{
float c = cosf(angle), s = sinf(angle);
// matrix multiplication carried out on paper:
// |1 x| |c -s | |sx | | 1 ky | |1 -ox|
// | 1 y| |s c | | sy | |kx 1 | | 1 -oy|
// | 1| | 1| | 1| | 1| | 1 |
// move rotate scale skew origin
e[0] = c * sx - ky * s * sy; // = a
e[1] = s * sx + ky * c * sy; // = b
e[3] = kx * c * sx - s * sy; // = c
e[4] = kx * s * sx + c * sy; // = d
e[6] = x - ox * e[0] - oy * e[3];
e[7] = y - ox * e[1] - oy * e[4];
e[2] = e[5] = 0.0f;
e[8] = 1.0f;
}
} // love