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GitHub Repository: hrydgard/ppsspp
 Path: blob/master/Common/Math/lin/matrix4x4.cpp
Views: 1401
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#include "Common/Math/lin/matrix4x4.h"

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#include <cstdio>

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#include "Common/Math/lin/vec3.h"

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#include "Common/Math/fast/fast_matrix.h"

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#ifdef _WIN32

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#undef far

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#undef near

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#endif

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// See http://code.google.com/p/oolongengine/source/browse/trunk/Oolong+Engine2/Math/neonmath/neon_matrix_impl.cpp?spec=svn143&r=143	when we need speed

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// no wait. http://code.google.com/p/math-neon/

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namespace Lin {

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Matrix4x4 Matrix4x4::transpose() const

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{

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	Matrix4x4 out;

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	out.xx = xx;out.xy = yx;out.xz = zx;out.xw = wx;

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	out.yx = xy;out.yy = yy;out.yz = zy;out.yw = wy;

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	out.zx = xz;out.zy = yz;out.zz = zz;out.zw = wz;

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	out.wx = xw;out.wy = yw;out.wz = zw;out.ww = ww;

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	return out;

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}

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Matrix4x4 Matrix4x4::operator * (const Matrix4x4 &other) const 

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{

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	Matrix4x4 temp;

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	fast_matrix_mul_4x4(temp.m, other.m, this->m);

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	return temp;

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}

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void Matrix4x4::setViewFrame(const Vec3 &pos, const Vec3 &vRight, const Vec3 &vView, const Vec3 &vUp) {

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	xx = vRight.x; xy = vUp.x; xz=vView.x; xw = 0.0f;

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	yx = vRight.y; yy = vUp.y; yz=vView.y; yw = 0.0f;

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	zx = vRight.z; zy = vUp.z; zz=vView.z; zw = 0.0f;

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	wx = -pos * vRight;

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	wy = -pos * vUp;

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	wz = -pos * vView;

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	ww = 1.0f;

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}

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void Matrix4x4::setOrtho(float left, float right, float bottom, float top, float near, float far) {

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	empty();

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	xx = 2.0f / (right - left);

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	yy = 2.0f / (top - bottom);

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	zz = 2.0f / (far - near);

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	wx = -(right + left) / (right - left);

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	wy = -(top + bottom) / (top - bottom);

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	wz = -(far + near) / (far - near);

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	ww = 1.0f;

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}

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void Matrix4x4::setOrthoD3D(float left, float right, float bottom, float top, float near, float far) {

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	empty();

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	xx = 2.0f / (right - left);

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	yy = 2.0f / (top - bottom);

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	zz = 1.0f / (far - near);

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	wx = -(right + left) / (right - left);

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	wy = -(top + bottom) / (top - bottom);

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	wz = -near / (far - near);

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	ww = 1.0f;

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}

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void Matrix4x4::setOrthoVulkan(float left, float right, float top, float bottom, float near, float far) {

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	empty();

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	xx = 2.0f / (right - left);

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	yy = 2.0f / (bottom - top);

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	zz = 1.0f / (far - near);

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	wx = -(right + left) / (right - left);

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	wy = -(top + bottom) / (bottom - top);

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	wz = -near / (far - near);

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	ww = 1.0f;

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}

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void Matrix4x4::toText(char *buffer, int len) const {

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	snprintf(buffer, len, "%f %f %f %f\n%f %f %f %f\n%f %f %f %f\n%f %f %f %f\n",

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		xx,xy,xz,xw,

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		yx,yy,yz,yw,

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		zx,zy,zz,zw,

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		wx,wy,wz,ww);

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	buffer[len - 1] = '\0';

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}

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void Matrix4x4::print() const {

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	char buffer[256];

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	toText(buffer, 256);

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	puts(buffer);

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}

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}

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