void DxSprite::BuildSpriteQuad(const Sprite & sprite, SpriteVertex v[4])
{
const CD3D11_RECT & dest = sprite.DestRect;
const CD3D11_RECT & src = sprite.SrcRect;
v[0].Pos = PointToNdc( dest.left, dest.bottom, sprite.Z );
v[1].Pos = PointToNdc( dest.left, dest.top, sprite.Z );
v[2].Pos = PointToNdc( dest.right, dest.top, sprite.Z );
v[3].Pos = PointToNdc( dest.right, dest.bottom, sprite.Z );
v[0].Tex = XMFLOAT2( (float)src.left / TexWidth, (float)src.bottom / TexHeight );
v[1].Tex = XMFLOAT2( (float)src.left / TexWidth, (float)src.top / TexHeight );
v[2].Tex = XMFLOAT2( (float)src.right / TexWidth, (float)src.top / TexHeight );
v[3].Tex = XMFLOAT2( (float)src.right / TexWidth, (float)src.bottom / TexHeight );
v[0].Color = sprite.Color;
v[1].Color = sprite.Color;
v[2].Color = sprite.Color;
v[3].Color = sprite.Color;
float tx = 0.5f * ( v[0].Pos.x + v[3].Pos.x );
float ty = 0.5f * ( v[0].Pos.y + v[1].Pos.y );
XMVECTOR scaling = XMVectorSet( sprite.Scale, sprite.Scale, 1.0f, 0.0f );
XMVECTOR origin = XMVectorSet( tx, ty, 0.0f, 0.0f );
XMVECTOR translation = XMVectorSet( 0.0f, 0.0f, 0.0f, 0.0f );
XMMATRIX T = XMMatrixAffineTransformation2D( scaling, origin, sprite.Angle, translation );
for( int i = 0; i < 4; ++i )
{
XMVECTOR p = XMLoadFloat3( &v[i].Pos );
p = XMVector3TransformCoord(p, T );
XMStoreFloat3( &v[i].Pos, p );
}
}
void DX11SpriteBatch::BuildSpriteQuad(const Sprite& sprite, MeshData::SpriteVertex v[4])
{
const CD3D11_RECT& dest = sprite.DestRect;
const CD3D11_RECT& src = sprite.SrcRect;
// Dest rect defines target in screen space.
v[0].pos = PointToNdc(dest.left, dest.bottom, sprite.Z);
v[1].pos = PointToNdc(dest.left, dest.top, sprite.Z);
v[2].pos = PointToNdc(dest.right, dest.top, sprite.Z);
v[3].pos = PointToNdc(dest.right, dest.bottom, sprite.Z);
// Source rect defines subset of texture to use from sprite sheet.
v[0].tex = Vector2((float)src.left / mTexWidth, (float)src.bottom / mTexHeight);
v[1].tex = Vector2((float)src.left / mTexWidth, (float)src.top / mTexHeight);
v[2].tex = Vector2((float)src.right / mTexWidth, (float)src.top / mTexHeight);
v[3].tex = Vector2((float)src.right / mTexWidth, (float)src.bottom / mTexHeight);
v[0].color = (u32)sprite.Color;
v[1].color = (u32)sprite.Color;
v[2].color = (u32)sprite.Color;
v[3].color = (u32)sprite.Color;
// Quad center point.
float tx = 0.5f*(v[0].pos.x + v[3].pos.x);
float ty = 0.5f*(v[0].pos.y + v[1].pos.y);
XMVECTOR scaling = XMVectorSet(sprite.Scale, sprite.Scale, 1.0f, 0.0f);
XMVECTOR origin = XMVectorSet(tx, ty, 0.0f, 0.0f);
XMVECTOR translation = XMVectorSet(0.0f, 0.0f, 0.0f, 0.0f);
XMMATRIX T = XMMatrixAffineTransformation2D(scaling, origin, sprite.Angle, translation);
// Rotate and scale the quad in NDC space.
for(int i = 0; i < 4; ++i)
{
XMFLOAT3 vec = v[i].pos;
XMVECTOR p = XMLoadFloat3(&vec);
p = XMVector3TransformCoord(p, T);
XMStoreFloat3(&vec, p);
v[i].pos.Set(vec.x, vec.y, vec.z);
}
}
VOID
Font::BuildSpriteQuad( Sprite *sprite, SpriteVertex v[ 4 ] )
{
FLOAT vertLeft = 2.0f * (float) sprite->DestRect.left / ScreenWidth - 1.0f;
FLOAT vertRight = 2.0f * (float) sprite->DestRect.right / ScreenWidth - 1.0f;
FLOAT vertTop = 1.0f - 2.0f * (float) sprite->DestRect.top / ScreenHeight;
FLOAT vertBottom = 1.0f - 2.0f * (float) sprite->DestRect.bottom / ScreenHeight;
float tx, ty;
int i;
XMVECTOR scaling, origin, translation;
XMMATRIX T;
v[ 0 ].x = vertLeft;
v[ 0 ].y = vertBottom;
v[ 0 ].z = sprite->Z;
v[ 0 ].Tex.x = (float)sprite->SrcRect.left / m_dwTexWidth;
v[ 0 ].Tex.y = (float)sprite->SrcRect.bottom / m_dwTexHeight;
v[ 0 ].Color = sprite->Color;
v[ 1 ].x = vertLeft;
v[ 1 ].y = vertTop;
v[ 1 ].z = sprite->Z;
v[ 1 ].Tex.x = (float)sprite->SrcRect.left / m_dwTexWidth;
v[ 1 ].Tex.y = (float)sprite->SrcRect.top / m_dwTexHeight;
v[ 1 ].Color = sprite->Color;
v[ 2 ].x = vertRight;
v[ 2 ].y = vertTop;
v[ 2 ].z = sprite->Z;
v[ 2 ].Tex.x = (float)sprite->SrcRect.right / m_dwTexWidth;
v[ 2 ].Tex.y = (float)sprite->SrcRect.top / m_dwTexHeight;
v[ 2 ].Color = sprite->Color;
v[ 3 ].x = vertRight;
v[ 3 ].y = vertBottom;
v[ 3 ].z = sprite->Z;
v[ 3 ].Tex.x = (float)sprite->SrcRect.right / m_dwTexWidth;
v[ 3 ].Tex.y = (float)sprite->SrcRect.bottom / m_dwTexHeight;
v[ 3 ].Color = sprite->Color;
tx = 0.5f * ( v[ 0 ].x + v[ 3 ].x );
ty = 0.5f * ( v[ 0 ].y + v[ 1 ].y );
scaling = XMVectorSet( sprite->Scale, sprite->Scale, 1.0f, 0.0f );
origin = XMVectorSet( tx, ty, 0.0f, 0.0f );
translation = XMVectorSet( 0.0f, 0.0f, 0.0f, 0.0f );
T = XMMatrixAffineTransformation2D( scaling, origin, sprite->Angle, translation );
for( i = 0; i < 4; ++i )
{
XMFLOAT3 xmfloat;
XMVECTOR p;
xmfloat.x = v[ i ].x;
xmfloat.y = v[ i ].y;
xmfloat.z = v[ i ].z;
p = XMLoadFloat3( &xmfloat );
p = XMVector3TransformCoord( p, &T );
XMStoreFloat3( &xmfloat, p );
v[ i ].x = xmfloat.x;
v[ i ].y = xmfloat.y;
v[ i ].z = xmfloat.z;
}
}
