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2019-05-15 16:52:37 +02:00
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245
src/math/Matrix.h Normal file
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#pragma once
class CMatrix
{
public:
RwMatrix m_matrix;
RwMatrix *m_attachment;
bool m_hasRwMatrix; // are we the owner?
CMatrix(void){
m_attachment = nil;
m_hasRwMatrix = false;
}
CMatrix(CMatrix const &m){
m_attachment = nil;
m_hasRwMatrix = false;
*this = m;
}
CMatrix(RwMatrix *matrix, bool attach){
m_attachment = nil;
Attach(matrix, attach);
}
~CMatrix(void){
if(m_hasRwMatrix && m_attachment)
RwMatrixDestroy(m_attachment);
}
void Attach(RwMatrix *matrix, bool attach){
if(m_hasRwMatrix && m_attachment)
RwMatrixDestroy(m_attachment);
m_attachment = matrix;
m_hasRwMatrix = attach;
Update();
}
void AttachRW(RwMatrix *matrix, bool attach){
if(m_hasRwMatrix && m_attachment)
RwMatrixDestroy(m_attachment);
m_attachment = matrix;
m_hasRwMatrix = attach;
UpdateRW();
}
void Detach(void){
if(m_hasRwMatrix && m_attachment)
RwMatrixDestroy(m_attachment);
m_attachment = nil;
}
void Update(void){
m_matrix = *m_attachment;
}
void UpdateRW(void){
if(m_attachment){
*m_attachment = m_matrix;
RwMatrixUpdate(m_attachment);
}
}
void operator=(CMatrix const &rhs){
m_matrix = rhs.m_matrix;
if(m_attachment)
UpdateRW();
}
CVector *GetPosition(void){ return (CVector*)&m_matrix.pos; }
CVector *GetRight(void) { return (CVector*)&m_matrix.right; }
CVector *GetForward(void) { return (CVector*)&m_matrix.up; }
CVector *GetUp(void) { return (CVector*)&m_matrix.at; }
void SetScale(float s){
m_matrix.right.x = s;
m_matrix.right.y = 0.0f;
m_matrix.right.z = 0.0f;
m_matrix.up.x = 0.0f;
m_matrix.up.y = s;
m_matrix.up.z = 0.0f;
m_matrix.at.x = 0.0f;
m_matrix.at.y = 0.0f;
m_matrix.at.z = s;
m_matrix.pos.x = 0.0f;
m_matrix.pos.y = 0.0f;
m_matrix.pos.z = 0.0f;
}
void SetRotateXOnly(float angle){
float c = cos(angle);
float s = sin(angle);
m_matrix.right.x = 1.0f;
m_matrix.right.y = 0.0f;
m_matrix.right.z = 0.0f;
m_matrix.up.x = 0.0f;
m_matrix.up.y = c;
m_matrix.up.z = s;
m_matrix.at.x = 0.0f;
m_matrix.at.y = -s;
m_matrix.at.z = c;
}
void SetRotateX(float angle){
SetRotateXOnly(angle);
m_matrix.pos.x = 0.0f;
m_matrix.pos.y = 0.0f;
m_matrix.pos.z = 0.0f;
}
void SetRotateYOnly(float angle){
float c = cos(angle);
float s = sin(angle);
m_matrix.right.x = c;
m_matrix.right.y = 0.0f;
m_matrix.right.z = -s;
m_matrix.up.x = 0.0f;
m_matrix.up.y = 1.0f;
m_matrix.up.z = 0.0f;
m_matrix.at.x = s;
m_matrix.at.y = 0.0f;
m_matrix.at.z = c;
}
void SetRotateY(float angle){
SetRotateYOnly(angle);
m_matrix.pos.x = 0.0f;
m_matrix.pos.y = 0.0f;
m_matrix.pos.z = 0.0f;
}
void SetRotateZOnly(float angle){
float c = cos(angle);
float s = sin(angle);
m_matrix.right.x = c;
m_matrix.right.y = s;
m_matrix.right.z = 0.0f;
m_matrix.up.x = -s;
m_matrix.up.y = c;
m_matrix.up.z = 0.0f;
m_matrix.at.x = 0.0f;
m_matrix.at.y = 0.0f;
m_matrix.at.z = 1.0f;
}
void SetRotateZ(float angle){
SetRotateZOnly(angle);
m_matrix.pos.x = 0.0f;
m_matrix.pos.y = 0.0f;
m_matrix.pos.z = 0.0f;
}
void Reorthogonalise(void){
CVector &r = *GetRight();
CVector &f = *GetForward();
CVector &u = *GetUp();
u = CrossProduct(r, f);
u.Normalise();
r = CrossProduct(f, u);
r.Normalise();
f = CrossProduct(u, r);
}
};
inline CMatrix&
Invert(const CMatrix &src, CMatrix &dst)
{
// GTA handles this as a raw 4x4 orthonormal matrix
// and trashes the RW flags, let's not do that
// actual copy of librw code:
RwMatrix *d = &dst.m_matrix;
const RwMatrix *s = &src.m_matrix;
d->right.x = s->right.x;
d->right.y = s->up.x;
d->right.z = s->at.x;
d->up.x = s->right.y;
d->up.y = s->up.y;
d->up.z = s->at.y;
d->at.x = s->right.z;
d->at.y = s->up.z;
d->at.z = s->at.z;
d->pos.x = -(s->pos.x*s->right.x +
s->pos.y*s->right.y +
s->pos.z*s->right.z);
d->pos.y = -(s->pos.x*s->up.x +
s->pos.y*s->up.y +
s->pos.z*s->up.z);
d->pos.z = -(s->pos.x*s->at.x +
s->pos.y*s->at.y +
s->pos.z*s->at.z);
d->flags = rwMATRIXTYPEORTHONORMAL;
return dst;
}
inline CMatrix
Invert(const CMatrix &matrix)
{
CMatrix inv;
return Invert(matrix, inv);
}
inline CVector
operator*(const CMatrix &mat, const CVector &vec)
{
return CVector(
mat.m_matrix.right.x * vec.x + mat.m_matrix.up.x * vec.y + mat.m_matrix.at.x * vec.z + mat.m_matrix.pos.x,
mat.m_matrix.right.y * vec.x + mat.m_matrix.up.y * vec.y + mat.m_matrix.at.y * vec.z + mat.m_matrix.pos.y,
mat.m_matrix.right.z * vec.x + mat.m_matrix.up.z * vec.y + mat.m_matrix.at.z * vec.z + mat.m_matrix.pos.z);
}
inline CMatrix
operator*(const CMatrix &m1, const CMatrix &m2)
{
CMatrix out;
RwMatrix *dst = &out.m_matrix;
const RwMatrix *src1 = &m1.m_matrix;
const RwMatrix *src2 = &m2.m_matrix;
dst->right.x = src1->right.x*src2->right.x + src1->up.x*src2->right.y + src1->at.x*src2->right.z;
dst->right.y = src1->right.y*src2->right.x + src1->up.y*src2->right.y + src1->at.y*src2->right.z;
dst->right.z = src1->right.z*src2->right.x + src1->up.z*src2->right.y + src1->at.z*src2->right.z;
dst->up.x = src1->right.x*src2->up.x + src1->up.x*src2->up.y + src1->at.x*src2->up.z;
dst->up.y = src1->right.y*src2->up.x + src1->up.y*src2->up.y + src1->at.y*src2->up.z;
dst->up.z = src1->right.z*src2->up.x + src1->up.z*src2->up.y + src1->at.z*src2->up.z;
dst->at.x = src1->right.x*src2->at.x + src1->up.x*src2->at.y + src1->at.x*src2->at.z;
dst->at.y = src1->right.y*src2->at.x + src1->up.y*src2->at.y + src1->at.y*src2->at.z;
dst->at.z = src1->right.z*src2->at.x + src1->up.z*src2->at.y + src1->at.z*src2->at.z;
dst->pos.x = src1->right.x*src2->pos.x + src1->up.x*src2->pos.y + src1->at.x*src2->pos.z + src1->pos.x;
dst->pos.y = src1->right.y*src2->pos.x + src1->up.y*src2->pos.y + src1->at.y*src2->pos.z + src1->pos.y;
dst->pos.z = src1->right.z*src2->pos.x + src1->up.z*src2->pos.y + src1->at.z*src2->pos.z + src1->pos.z;
return out;
}
inline CVector
MultiplyInverse(const CMatrix &mat, const CVector &vec)
{
CVector v(vec.x - mat.m_matrix.pos.x, vec.y - mat.m_matrix.pos.y, vec.z - mat.m_matrix.pos.z);
return CVector(
mat.m_matrix.right.x * v.x + mat.m_matrix.right.y * v.y + mat.m_matrix.right.z * v.z,
mat.m_matrix.up.x * v.x + mat.m_matrix.up.y * v.y + mat.m_matrix.up.z * v.z,
mat.m_matrix.at.x * v.x + mat.m_matrix.at.y * v.y + mat.m_matrix.at.z * v.z);
}
inline CVector
Multiply3x3(const CMatrix &mat, const CVector &vec)
{
return CVector(
mat.m_matrix.right.x * vec.x + mat.m_matrix.up.x * vec.y + mat.m_matrix.at.x * vec.z,
mat.m_matrix.right.y * vec.x + mat.m_matrix.up.y * vec.y + mat.m_matrix.at.y * vec.z,
mat.m_matrix.right.z * vec.x + mat.m_matrix.up.z * vec.y + mat.m_matrix.at.z * vec.z);
}

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src/math/Rect.h Normal file
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#pragma once
#pragma once
class CRect
{
public:
float left; // x min
float top; // y max
float right; // x max
float bottom; // y min
CRect(void){
left = 1000000.0f;
bottom = 1000000.0f;
right = -1000000.0f;
top = -1000000.0f;
}
CRect(float l, float b, float r, float t){
left = l;
bottom = b;
right = r;
top = t;
}
void ContainPoint(CVector const &v){
if(v.x < left) left = v.x;
if(v.x > right) right = v.x;
if(v.y < bottom) bottom = v.y;
if(v.y > top) top = v.y;
}
};

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src/math/Vector.h Normal file
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#pragma once
class CVector
{
public:
float x, y, z;
CVector(void) {}
CVector(float x, float y, float z) : x(x), y(y), z(z) {}
// CVector(rw::V3d const &v) : x(v.x), y(v.y), z(v.z) {}
float Magnitude(void) const { return sqrt(x*x + y*y + z*z); }
float MagnitudeSqr(void) const { return x*x + y*y + z*z; }
float Magnitude2D(void) const { return sqrt(x*x + y*y); }
void Normalise(void){
float sq = MagnitudeSqr();
if(sq > 0.0f){
float invsqrt = 1.0f/sqrt(sq);
x *= invsqrt;
y *= invsqrt;
z *= invsqrt;
}else
x = 1.0f;
}
// rw::V3d ToRW(void){
// return rw::makeV3d(x, y, z);
// }
// void operator=(rw::V3d const &rhs){
// x = rhs.x;
// y = rhs.y;
// z = rhs.z;
// }
CVector operator-(const CVector &rhs) const {
return CVector(x-rhs.x, y-rhs.y, z-rhs.z);
}
CVector operator+(const CVector &rhs) const {
return CVector(x+rhs.x, y+rhs.y, z+rhs.z);
}
CVector operator*(float t) const {
return CVector(x*t, y*t, z*t);
}
CVector operator/(float t) const {
return CVector(x/t, y/t, z/t);
}
CVector &operator-=(const CVector &rhs) {
this->x -= rhs.x;
this->y -= rhs.y;
this->z -= rhs.z;
return *this;
}
CVector &operator+=(const CVector &rhs) {
this->x += rhs.x;
this->y += rhs.y;
this->z += rhs.z;
return *this;
}
CVector &operator*=(float t) {
this->x *= t;
this->y *= t;
this->z *= t;
return *this;
}
CVector &operator/=(float t) {
this->x /= t;
this->y /= t;
this->z /= t;
return *this;
}
};
inline float
DotProduct(const CVector &v1, const CVector &v2)
{
return v1.x*v2.x + v1.y*v2.y + v1.z*v2.z;
}
inline CVector
CrossProduct(const CVector &v1, const CVector &v2)
{
return CVector(
v1.y*v2.z - v1.z*v2.y,
v1.z*v2.x - v1.x*v2.z,
v1.x*v2.y - v1.y*v2.x);
}

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src/math/Vector2D.h Normal file
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#pragma once
class CVector2D
{
public:
float x, y;
CVector2D(void) {}
CVector2D(float x, float y) : x(x), y(y) {}
CVector2D(const CVector &v) : x(v.x), y(v.y) {}
float Magnitude(void) const { return sqrt(x*x + y*y); }
float MagnitudeSqr(void) const { return x*x + y*y; }
void Normalise(void){
float sq = MagnitudeSqr();
if(sq > 0.0f){
float invsqrt = 1.0f/sqrt(sq);
x *= invsqrt;
y *= invsqrt;
}else
x = 0.0f;
}
CVector2D operator-(const CVector2D &rhs) const {
return CVector2D(x-rhs.x, y-rhs.y);
}
CVector2D operator+(const CVector2D &rhs) const {
return CVector2D(x+rhs.x, y+rhs.y);
}
CVector2D operator*(float t) const {
return CVector2D(x*t, y*t);
}
};
inline float
CrossProduct2D(const CVector2D &v1, const CVector2D &v2)
{
return v1.x*v2.y - v1.y*v2.x;
}