// https://github.com/dotnet/corefx/blob/master/src/System.Numerics.Vectors/src/System/Numerics/Matrix4x4.cs
// public static Matrix4x4 Add(Matrix4x4 value1, Matrix4x4 value2)
public static ovrMatrix4f Add(ovrMatrix4f _a, ovrMatrix4f _b)
{
// when is this of any use?
ovrMatrix4f _o;
__Matrix4x4 o = &_o;
__Matrix4x4 a = &_a;
__Matrix4x4 b = &_b;
{
o.M[0, 0] = a.M[0, 0] + b.M[0, 0];
o.M[1, 0] = a.M[1, 0] + b.M[1, 0];
o.M[2, 0] = a.M[2, 0] + b.M[2, 0];
o.M[3, 0] = a.M[3, 0] + b.M[3, 0];
o.M[0, 1] = a.M[0, 1] + b.M[0, 1];
o.M[1, 1] = a.M[1, 1] + b.M[1, 1];
o.M[2, 1] = a.M[2, 1] + b.M[2, 1];
o.M[3, 1] = a.M[3, 1] + b.M[3, 1];
o.M[0, 2] = a.M[0, 2] + b.M[0, 2];
o.M[1, 2] = a.M[1, 2] + b.M[1, 2];
o.M[2, 2] = a.M[2, 2] + b.M[2, 2];
o.M[3, 2] = a.M[3, 2] + b.M[3, 2];
o.M[0, 3] = a.M[0, 3] + b.M[0, 3];
o.M[1, 3] = a.M[1, 3] + b.M[1, 3];
o.M[2, 3] = a.M[2, 3] + b.M[2, 3];
o.M[3, 3] = a.M[3, 3] + b.M[3, 3];
// operating on fixed buffers, yet we want the dimensional array magic.
}
return(_o);
}
public static ovrMatrix4f Multiply(__Matrix4x4 a, __Matrix4x4 b, __Matrix4x4 c)
{
var ab = Multiply(a, b);
//__ovrMatrix4f ab = &_ab;
var abc = Multiply(&ab, c);
return(abc);
}
//public static ovrMatrix4f TanAngleMatrixFromProjection(__ovrMatrix4f projection)
public static ovrMatrix4f TanAngleMatrixFromProjection(ovrMatrix4f __projection)
{
ConsoleExtensions.trace("enter TanAngleMatrixFromProjection");
__Matrix4x4 projection = &__projection;
// A projection matrix goes from a view point to NDC, or -1 to 1 space.
// Scale and bias to convert that to a 0 to 1 space.
//const ovrMatrix4f tanAngleMatrix =
//float[,] tanAngleMatrix =
//{
// { 0.5f * projection.M[0,0], 0.5f * projection.M[0,1], 0.5f * projection.M[0,2] - 0.5f, 0.5f * projection.M[0,3] },
// { 0.5f * projection.M[1,0], 0.5f * projection.M[1,1], 0.5f * projection.M[1,2] - 0.5f, 0.5f * projection.M[1,3] },
// {0.0f, 0.0f, -1.0f, 0.0f},
// {0.0f, 0.0f, -1.0f, 0.0f }
//};
float[] tanAngleMatrix =
{
0.5f * projection.M[0, 0], 0.5f * projection.M[0, 1], 0.5f * projection.M[0, 2] - 0.5f, 0.5f * projection.M[0, 3],
0.5f * projection.M[1, 0], 0.5f * projection.M[1, 1], 0.5f * projection.M[1, 2] - 0.5f, 0.5f * projection.M[1, 3],
0.0f, 0.0f, -1.0f, 0.0f,
0.0f, 0.0f, -1.0f, 0.0f
};
ovrMatrix4f that_data;
__Matrix4x4 that = &that_data;
//that_data.M = tanAngleMatrix;
//that_data.M[0] = tanAngleMatrix[0];
//for (int i = 0; i < 16; i++)
//{
// // this will cause stack corruption. why?
// that.M[i, i] = tanAngleMatrix[i];
//}
for (int x = 0; x < 4; x++)
{
for (int y = 0; y < 4; y++)
{
//that.M[x, y] = tanAngleMatrix[x, y];
//that.M[x, y] = tanAngleMatrix[x + 4 * y];
// memorylayout the same as for CLR?
that.M[x, y] = tanAngleMatrix[y + 4 * x];
}
}
//jni/OVRWindWheelNDK.dll.c:2651:28: error: expected expression before '?' token
// singleArray7 = calloc [?][?];
// ^
ConsoleExtensions.trace("exit TanAngleMatrixFromProjection, stack still valid?");
return(that_data);
}
public static ovrMatrix4f Transpose(__Matrix4x4 a)
{
ovrMatrix4f _o;
__Matrix4x4 o = &_o;
o.M[0, 0] = a.M[0, 0]; o.M[0, 1] = a.M[1, 0]; o.M[0, 2] = a.M[2, 0]; o.M[0, 3] = a.M[3, 0];
o.M[1, 0] = a.M[0, 1]; o.M[1, 1] = a.M[1, 1]; o.M[1, 2] = a.M[2, 1]; o.M[1, 3] = a.M[3, 1];
o.M[2, 0] = a.M[0, 2]; o.M[2, 1] = a.M[1, 2]; o.M[2, 2] = a.M[2, 2]; o.M[2, 3] = a.M[3, 2];
o.M[3, 0] = a.M[0, 3]; o.M[3, 1] = a.M[1, 3]; o.M[3, 2] = a.M[2, 3]; o.M[3, 3] = a.M[3, 3];
return(_o);
}
public static ovrMatrix4f CreateTranslation(float x, float y, float z, float scale = 1.0f)
{
ovrMatrix4f _o;
__Matrix4x4 o = &_o;
o.M[0, 0] = scale; o.M[0, 1] = 0.0f; o.M[0, 2] = 0.0f; o.M[0, 3] = x;
o.M[1, 0] = 0.0f; o.M[1, 1] = scale; o.M[1, 2] = 0.0f; o.M[1, 3] = y;
o.M[2, 0] = 0.0f; o.M[2, 1] = 0.0f; o.M[2, 2] = scale; o.M[2, 3] = z;
o.M[3, 0] = 0.0f; o.M[3, 1] = 0.0f; o.M[3, 2] = 0.0f; o.M[3, 3] = 1.0f;
return(_o);
}
public static ovrMatrix4f Multiply(__Matrix4x4 a, __Matrix4x4 b)
{
// perhaps the compiler could decide to optimize and move to a byref pointer version?
// memory dereference magic
// yet, in glsl we wont have pointers, all we will have is copy struct?
// http://www.gamedev.net/topic/347232-glsl-pointers/
// Error 3 A pointer must be indexed by only one value X:\jsc.svn\examples\java\android\vr\OVRWindWheelNDK\OVRWindWheelNDK\References\VrApi.ovrMatrix4f.cs 93 98 OVRWindWheelNDK
//Error 5 The type of a local declared in a fixed statement must be a pointer type X:\jsc.svn\examples\java\android\vr\OVRWindWheelNDK\OVRWindWheelNDK\References\VrApi.ovrMatrix4f.cs 92 20 OVRWindWheelNDK
ovrMatrix4f _o;
__Matrix4x4 o = &_o;
//__ovrMatrix4f a = &_a;
//__ovrMatrix4f b = &_b;
{
o.M[0, 0] = a.M[0, 0] * b.M[0, 0] + a.M[0, 1] * b.M[1, 0] + a.M[0, 2] * b.M[2, 0] + a.M[0, 3] * b.M[3, 0];
o.M[1, 0] = a.M[1, 0] * b.M[0, 0] + a.M[1, 1] * b.M[1, 0] + a.M[1, 2] * b.M[2, 0] + a.M[1, 3] * b.M[3, 0];
o.M[2, 0] = a.M[2, 0] * b.M[0, 0] + a.M[2, 1] * b.M[1, 0] + a.M[2, 2] * b.M[2, 0] + a.M[2, 3] * b.M[3, 0];
o.M[3, 0] = a.M[3, 0] * b.M[0, 0] + a.M[3, 1] * b.M[1, 0] + a.M[3, 2] * b.M[2, 0] + a.M[3, 3] * b.M[3, 0];
o.M[0, 1] = a.M[0, 0] * b.M[0, 1] + a.M[0, 1] * b.M[1, 1] + a.M[0, 2] * b.M[2, 1] + a.M[0, 3] * b.M[3, 1];
o.M[1, 1] = a.M[1, 0] * b.M[0, 1] + a.M[1, 1] * b.M[1, 1] + a.M[1, 2] * b.M[2, 1] + a.M[1, 3] * b.M[3, 1];
o.M[2, 1] = a.M[2, 0] * b.M[0, 1] + a.M[2, 1] * b.M[1, 1] + a.M[2, 2] * b.M[2, 1] + a.M[2, 3] * b.M[3, 1];
o.M[3, 1] = a.M[3, 0] * b.M[0, 1] + a.M[3, 1] * b.M[1, 1] + a.M[3, 2] * b.M[2, 1] + a.M[3, 3] * b.M[3, 1];
o.M[0, 2] = a.M[0, 0] * b.M[0, 2] + a.M[0, 1] * b.M[1, 2] + a.M[0, 2] * b.M[2, 2] + a.M[0, 3] * b.M[3, 2];
o.M[1, 2] = a.M[1, 0] * b.M[0, 2] + a.M[1, 1] * b.M[1, 2] + a.M[1, 2] * b.M[2, 2] + a.M[1, 3] * b.M[3, 2];
o.M[2, 2] = a.M[2, 0] * b.M[0, 2] + a.M[2, 1] * b.M[1, 2] + a.M[2, 2] * b.M[2, 2] + a.M[2, 3] * b.M[3, 2];
o.M[3, 2] = a.M[3, 0] * b.M[0, 2] + a.M[3, 1] * b.M[1, 2] + a.M[3, 2] * b.M[2, 2] + a.M[3, 3] * b.M[3, 2];
o.M[0, 3] = a.M[0, 0] * b.M[0, 3] + a.M[0, 1] * b.M[1, 3] + a.M[0, 2] * b.M[2, 3] + a.M[0, 3] * b.M[3, 3];
o.M[1, 3] = a.M[1, 0] * b.M[0, 3] + a.M[1, 1] * b.M[1, 3] + a.M[1, 2] * b.M[2, 3] + a.M[1, 3] * b.M[3, 3];
o.M[2, 3] = a.M[2, 0] * b.M[0, 3] + a.M[2, 1] * b.M[1, 3] + a.M[2, 2] * b.M[2, 3] + a.M[2, 3] * b.M[3, 3];
o.M[3, 3] = a.M[3, 0] * b.M[0, 3] + a.M[3, 1] * b.M[1, 3] + a.M[3, 2] * b.M[2, 3] + a.M[3, 3] * b.M[3, 3];
// operating on fixed buffers, yet we want the dimensional array magic.
}
return(_o);
}
public static ovrMatrix4f CreateProjection(
float minX,
float maxX,
float minY,
float maxY,
float nearZ,
float farZ)
{
float width = maxX - minX;
float height = maxY - minY;
float offsetZ = nearZ; // set to zero for a [0,1] clip space
ovrMatrix4f that_data;
__Matrix4x4 that = &that_data;
// what about jagged arrays?
if (farZ <= nearZ)
{
// place the far plane at infinity
that.M[0, 0] = 2 * nearZ / width;
that.M[0, 1] = 0;
that.M[0, 2] = (maxX + minX) / width;
that.M[0, 3] = 0;
that.M[1, 0] = 0;
that.M[1, 1] = 2 * nearZ / height;
that.M[1, 2] = (maxY + minY) / height;
that.M[1, 3] = 0;
that.M[2, 0] = 0;
that.M[2, 1] = 0;
that.M[2, 2] = -1;
that.M[2, 3] = -(nearZ + offsetZ);
that.M[3, 0] = 0;
that.M[3, 1] = 0;
that.M[3, 2] = -1;
that.M[3, 3] = 0;
}
else
{
// normal projection
that.M[0, 0] = 2 * nearZ / width;
that.M[0, 1] = 0;
that.M[0, 2] = (maxX + minX) / width;
that.M[0, 3] = 0;
that.M[1, 0] = 0;
that.M[1, 1] = 2 * nearZ / height;
that.M[1, 2] = (maxY + minY) / height;
that.M[1, 3] = 0;
that.M[2, 0] = 0;
that.M[2, 1] = 0;
that.M[2, 2] = -(farZ + offsetZ) / (farZ - nearZ);
that.M[2, 3] = -(farZ * (nearZ + offsetZ)) / (farZ - nearZ);
that.M[3, 0] = 0;
that.M[3, 1] = 0;
that.M[3, 2] = -1;
that.M[3, 3] = 0;
}
return(that_data);
}
public static ovrMatrix4f CreateRotation(float radiansX, float radiansY, float radiansZ)
{
// X:\jsc.svn\examples\c\Test\TestStackFloatArray\TestStackFloatArray\Class1.cs
// http://stackoverflow.com/questions/9087563/maximum-native-memory-that-can-be-allocated-to-an-android-app
// Error 3 Cannot initialize object of type 'float*' with a collection initializer X:\jsc.svn\examples\java\android\vr\OVRWindWheelNDK\OVRWindWheelNDK\References\VrApi.ovrMatrix4f.cs 248 17 OVRWindWheelNDK
// I/DEBUG ( 9747): signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x8
float sinX = math.sinf(radiansX);
float cosX = math.cosf(radiansX);
// Error 3 Cannot take the address of, get the size of, or declare a pointer to a managed type ('float[*,*]') X:\jsc.svn\examples\java\android\vr\OVRWindWheelNDK\OVRWindWheelNDK\References\VrApi.ovrMatrix4f.cs 292 61 OVRWindWheelNDK
// we will leak a lot of heap...
// not the heap. the stack thankyou. almost playing GC?
// since we are not returning this array, it should live on stack. this way we wont leak memory as we are running without GC..
//float[] rotationX = stackalloc float[16];
//float[] rotationXx = new float[16];
//// I/xNativeActivity( 7804): \VrApi.ovrMatrix4f.cs:338 out of heap? errno: 12 Out of memory
//if (rotationXx == null)
//{
// // https://android.googlesource.com/platform/development/+/c817c5210e4207908b83faaf08a2c5b95251f871/ndk/platforms/android-5/arch-x86/usr/include/malloc.h
// ConsoleExtensions.trace("out of heap?");
// //I/System.Console(19158): 4ad6:480b enter GetAllNetworkInterfaces
// //I/xNativeActivity(18481): \VrApi.ovrMatrix4f.cs:343 out of heap? errno: 12 Out of memory
// //I/xNativeActivity(18481): \VrCubeWorld.AppThread.cs:71 mallinfo total allocated space: -2083023504
// //I/xNativeActivity(18481): \VrCubeWorld.AppThread.cs:72 mallinfo total free space: 76049040
// //malloc_h.malloc_stats();
// VrCubeWorld.ovrAppThread.xmallinfo();
// unistd._exit(43);
//}
//stdlib_h.free(rotationXx);
float[] rotationX =
{
1, 0, 0, 0,
0, cosX, -sinX, 0,
0, sinX, cosX, 0,
0, 0, 0, 1
};
float sinY = math.sinf(radiansY);
float cosY = math.cosf(radiansY);
float[] rotationY =
{
cosY, 0, sinY, 0,
0, 1, 0, 0,
-sinY, 0, cosY, 0,
0, 0, 0, 1
};
float sinZ = math.sinf(radiansZ);
float cosZ = math.cosf(radiansZ);
float[] rotationZ =
{
cosZ, -sinZ, 0, 0,
sinZ, cosZ, 0, 0,
0, 0, 1, 0,
0, 0, 0, 1
};
__Matrix4x4 x = rotationX;
__Matrix4x4 y = rotationY;
__Matrix4x4 z = rotationZ;
//ovrMatrix4f o;
ovrMatrix4f rotationXY = __Matrix4x4.Multiply(y, x);
ovrMatrix4f rotationXYZ = __Matrix4x4.Multiply(z, &rotationXY);
// copy it back..
return(rotationXYZ);
}
public ovrMatrix4f Multiply(__Matrix4x4 b)
{
return(__Matrix4x4.Multiply(this, b));
}
public static ovrMatrix4f Transpose(__Matrix4x4 a)
{
ovrMatrix4f _o;
__Matrix4x4 o = &_o;
o.M[0, 0] = a.M[0, 0]; o.M[0, 1] = a.M[1, 0]; o.M[0, 2] = a.M[2, 0]; o.M[0, 3] = a.M[3, 0];
o.M[1, 0] = a.M[0, 1]; o.M[1, 1] = a.M[1, 1]; o.M[1, 2] = a.M[2, 1]; o.M[1, 3] = a.M[3, 1];
o.M[2, 0] = a.M[0, 2]; o.M[2, 1] = a.M[1, 2]; o.M[2, 2] = a.M[2, 2]; o.M[2, 3] = a.M[3, 2];
o.M[3, 0] = a.M[0, 3]; o.M[3, 1] = a.M[1, 3]; o.M[3, 2] = a.M[2, 3]; o.M[3, 3] = a.M[3, 3];
return _o;
}
public static ovrMatrix4f Multiply(__Matrix4x4 a, __Matrix4x4 b)
{
// perhaps the compiler could decide to optimize and move to a byref pointer version?
// memory dereference magic
// yet, in glsl we wont have pointers, all we will have is copy struct?
// http://www.gamedev.net/topic/347232-glsl-pointers/
// Error 3 A pointer must be indexed by only one value X:\jsc.svn\examples\java\android\vr\OVRWindWheelNDK\OVRWindWheelNDK\References\VrApi.ovrMatrix4f.cs 93 98 OVRWindWheelNDK
//Error 5 The type of a local declared in a fixed statement must be a pointer type X:\jsc.svn\examples\java\android\vr\OVRWindWheelNDK\OVRWindWheelNDK\References\VrApi.ovrMatrix4f.cs 92 20 OVRWindWheelNDK
ovrMatrix4f _o;
__Matrix4x4 o = &_o;
//__ovrMatrix4f a = &_a;
//__ovrMatrix4f b = &_b;
{
o.M[0, 0] = a.M[0, 0] * b.M[0, 0] + a.M[0, 1] * b.M[1, 0] + a.M[0, 2] * b.M[2, 0] + a.M[0, 3] * b.M[3, 0];
o.M[1, 0] = a.M[1, 0] * b.M[0, 0] + a.M[1, 1] * b.M[1, 0] + a.M[1, 2] * b.M[2, 0] + a.M[1, 3] * b.M[3, 0];
o.M[2, 0] = a.M[2, 0] * b.M[0, 0] + a.M[2, 1] * b.M[1, 0] + a.M[2, 2] * b.M[2, 0] + a.M[2, 3] * b.M[3, 0];
o.M[3, 0] = a.M[3, 0] * b.M[0, 0] + a.M[3, 1] * b.M[1, 0] + a.M[3, 2] * b.M[2, 0] + a.M[3, 3] * b.M[3, 0];
o.M[0, 1] = a.M[0, 0] * b.M[0, 1] + a.M[0, 1] * b.M[1, 1] + a.M[0, 2] * b.M[2, 1] + a.M[0, 3] * b.M[3, 1];
o.M[1, 1] = a.M[1, 0] * b.M[0, 1] + a.M[1, 1] * b.M[1, 1] + a.M[1, 2] * b.M[2, 1] + a.M[1, 3] * b.M[3, 1];
o.M[2, 1] = a.M[2, 0] * b.M[0, 1] + a.M[2, 1] * b.M[1, 1] + a.M[2, 2] * b.M[2, 1] + a.M[2, 3] * b.M[3, 1];
o.M[3, 1] = a.M[3, 0] * b.M[0, 1] + a.M[3, 1] * b.M[1, 1] + a.M[3, 2] * b.M[2, 1] + a.M[3, 3] * b.M[3, 1];
o.M[0, 2] = a.M[0, 0] * b.M[0, 2] + a.M[0, 1] * b.M[1, 2] + a.M[0, 2] * b.M[2, 2] + a.M[0, 3] * b.M[3, 2];
o.M[1, 2] = a.M[1, 0] * b.M[0, 2] + a.M[1, 1] * b.M[1, 2] + a.M[1, 2] * b.M[2, 2] + a.M[1, 3] * b.M[3, 2];
o.M[2, 2] = a.M[2, 0] * b.M[0, 2] + a.M[2, 1] * b.M[1, 2] + a.M[2, 2] * b.M[2, 2] + a.M[2, 3] * b.M[3, 2];
o.M[3, 2] = a.M[3, 0] * b.M[0, 2] + a.M[3, 1] * b.M[1, 2] + a.M[3, 2] * b.M[2, 2] + a.M[3, 3] * b.M[3, 2];
o.M[0, 3] = a.M[0, 0] * b.M[0, 3] + a.M[0, 1] * b.M[1, 3] + a.M[0, 2] * b.M[2, 3] + a.M[0, 3] * b.M[3, 3];
o.M[1, 3] = a.M[1, 0] * b.M[0, 3] + a.M[1, 1] * b.M[1, 3] + a.M[1, 2] * b.M[2, 3] + a.M[1, 3] * b.M[3, 3];
o.M[2, 3] = a.M[2, 0] * b.M[0, 3] + a.M[2, 1] * b.M[1, 3] + a.M[2, 2] * b.M[2, 3] + a.M[2, 3] * b.M[3, 3];
o.M[3, 3] = a.M[3, 0] * b.M[0, 3] + a.M[3, 1] * b.M[1, 3] + a.M[3, 2] * b.M[2, 3] + a.M[3, 3] * b.M[3, 3];
// operating on fixed buffers, yet we want the dimensional array magic.
}
return _o;
}
public static ovrMatrix4f Multiply(__Matrix4x4 a, __Matrix4x4 b, __Matrix4x4 c)
{
var ab = Multiply(a, b);
//__ovrMatrix4f ab = &_ab;
var abc = Multiply(&ab, c);
return abc;
}
public ovrMatrix4f Multiply(__Matrix4x4 b)
{
return __Matrix4x4.Multiply(this, b);
}