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Added More Vector math functions

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Added VectorMul (vector multiply), VectorDiv (vector divide, and
VectorMidPoint to find the midpoint of two vectors.
This commit is contained in:
Nathan Bowhay 2015-02-03 10:59:32 -08:00
parent c98e95e6ff
commit 2efe1a9c0a
1 changed files with 88 additions and 0 deletions
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88
Engine/source/math/mathTypes.cpp
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@ -659,6 +659,66 @@ DefineConsoleFunction( VectorScale, VectorF, ( VectorF a, F32 scalar ),,
{ {
return a * scalar; return a * scalar;
} }
DefineConsoleFunction( VectorMul, VectorF, ( VectorF a, VectorF b ),,
"Multiplies two vectors.\n"
"@param a The first vector.\n"
"@param b The second vector.\n"
"@return The vector @a a * @a b.\n\n"
"@tsexample\n"
"//-----------------------------------------------------------------------------\n"
"//\n"
"// VectorMul( %a, %b );\n"
"//\n"
"// The multiplication of vector a, (ax, ay, az), and vector b, (bx, by, bz) is:\n"
"//\n"
"// a * b = ( ax * bx, ay * by, az * bz )\n"
"//\n"
"//-----------------------------------------------------------------------------\n\n"
"%a = \"1 0 0\";\n"
"%b = \"0 1 0\";\n\n"
"// %r = \"( 1 * 0, 0 * 1, 0 * 0 )\";\n"
"// %r = \"0 0 0\";\n"
"%r = VectorMul( %a, %b );\n"
"@endtsexample\n\n"
"@ingroup Vectors" )
{
return a * b;
}
DefineConsoleFunction( VectorDiv, VectorF, ( VectorF a, VectorF b ),,
"Divide two vectors.\n"
"@param a The first vector.\n"
"@param b The second vector.\n"
"@return The vector @a a / @a b.\n\n"
"@tsexample\n"
"//-----------------------------------------------------------------------------\n"
"//\n"
"// VectorDiv( %a, %b );\n"
"//\n"
"// The division of vector a, (ax, ay, az), and vector b, (bx, by, bz) is:\n"
"//\n"
"// a * b = ( ax / bx, ay / by, az / bz )\n"
"//\n"
"//-----------------------------------------------------------------------------\n\n"
"%a = \"1 1 1\";\n"
"%b = \"2 2 2\";\n\n"
"// %r = \"( 1 / 2, 1 / 2, 1 / 2 )\";\n"
"// %r = \"0.5 0.5 0.5\";\n"
"%r = VectorDiv( %a, %b );\n"
"@endtsexample\n\n"
"@ingroup Vectors" )
{
//this is kind of bad, but so is dividing by 0
if(b.x == 0) b.x = 0.000001f;
if(b.y == 0) b.y = 0.000001f;
if(b.z == 0) b.z = 0.000001f;
return a / b;
}
//----------------------------------------------------------------------------- //-----------------------------------------------------------------------------
@ -789,6 +849,34 @@ DefineConsoleFunction( VectorDist, F32, ( VectorF a, VectorF b ),,
//----------------------------------------------------------------------------- //-----------------------------------------------------------------------------
DefineConsoleFunction( VectorMidPoint, VectorF, ( VectorF a, VectorF b ),,
"Gets the midpoint between the two vectors.\n"
"@param a The first vector.\n"
"@param b The second vector.\n"
"@return The vector (@a a + @a b) / 2.\n\n"
"@tsexample\n"
"//-----------------------------------------------------------------------------\n"
"//\n"
"// VectorMidPoint( %a, %b );\n"
"//\n"
"// The midpoint of vector a, (ax, ay, az), and vector b, (bx, by, bz) is:\n"
"//\n"
"// (a + b)/2 = ( (ax + bx) /2, ay + by) /2, (az + bz) /2 )\n"
"//\n"
"//-----------------------------------------------------------------------------\n"
// "%a = \"1 0 0\";\n"
// "%b = \"0 1 0\";\n\n"
// "// %r = \"( 1 + 0, 0 + 1, 0 + 0 )\";\n"
// "// %r = \"1 1 0\";\n"
// "%r = VectorAdd( %a, %b );\n"
"@endtsexample\n\n"
"@ingroup Vectors")
{
return (a + b)/2.0f;
}
//-----------------------------------------------------------------------------
DefineConsoleFunction( VectorLen, F32, ( VectorF v ),, DefineConsoleFunction( VectorLen, F32, ( VectorF v ),,
"Calculate the magnitude of the given vector.\n" "Calculate the magnitude of the given vector.\n"
"@param v A vector.\n" "@param v A vector.\n"