public Matrix4x4 GetTransformMatrix(FlipFlags ff, MapOrientation orientation)
{
var inversePPU = 1.0f / m_Sprite.pixelsPerUnit;
var offset = new Vector2(m_TileOffsetX * inversePPU, -m_TileOffsetY * inversePPU);
var matOffset = Matrix4x4.Translate(offset);
if (ff == FlipFlags.None)
{
return(matOffset);
}
bool flipHorizontal = FlipFlagsMask.FlippedHorizontally(ff);
bool flipVertical = FlipFlagsMask.FlippedVertically(ff);
bool flipDiagonal = FlipFlagsMask.RotatedDiagonally(ff);
bool rotateHex120 = FlipFlagsMask.RotatedHexagonally120(ff);
float width = m_Width * inversePPU;
float height = m_Height * inversePPU;
var tileCenter = new Vector2(width, height) * 0.5f;
Matrix4x4 matTransIn = Matrix4x4.identity;
Matrix4x4 matFlip = Matrix4x4.identity;
Matrix4x4 matTransOut = Matrix4x4.identity;
// Go to the tile center
matTransIn = Matrix4x4.Translate(-tileCenter);
if (orientation == MapOrientation.Hexagonal)
{
if (flipDiagonal)
{
matFlip *= Rotate60Matrix;
}
if (rotateHex120)
{
matFlip *= Rotate120Matrix;
}
if (flipHorizontal)
{
matFlip *= HorizontalFlipMatrix;
}
if (flipVertical)
{
matFlip *= VerticalFlipMatrix;
}
matTransOut = Matrix4x4.Translate(tileCenter);
}
else
{
if (flipHorizontal)
{
matFlip *= HorizontalFlipMatrix;
}
if (flipVertical)
{
matFlip *= VerticalFlipMatrix;
}
if (flipDiagonal)
{
matFlip *= DiagonalFlipMatrix;
}
// Go out of the tile center
if (!flipDiagonal)
{
matTransOut = Matrix4x4.Translate(tileCenter);
}
else
{
// Compensate for width and height being different dimensions
float diff = (height - width) * 0.5f;
tileCenter.x += diff;
tileCenter.y -= diff;
matTransOut = Matrix4x4.Translate(tileCenter);
}
}
// Put it all together
return(matOffset * matTransOut * matFlip * matTransIn);
}
public void GetTRS(FlipFlags flags, MapOrientation orientation, out Vector3 xfTranslate, out Vector3 xfRotate, out Vector3 xfScale)
{
float inversePPU = 1.0f / m_Sprite.pixelsPerUnit;
float width = m_Width * inversePPU;
float height = m_Height * inversePPU;
bool flippedHorizontally = FlipFlagsMask.FlippedHorizontally(flags);
bool flippedVertically = FlipFlagsMask.FlippedVertically(flags);
bool rotatedDiagonally = FlipFlagsMask.RotatedDiagonally(flags);
bool rotatedHexagonally120 = FlipFlagsMask.RotatedHexagonally120(flags);
xfTranslate = Vector3.zero;
xfRotate = Vector3.zero;
xfScale = Vector3.one;
if (flags != FlipFlags.None)
{
if (orientation == MapOrientation.Hexagonal)
{
if (rotatedDiagonally)
{
xfRotate.z -= 60;
}
if (rotatedHexagonally120)
{
xfRotate.z -= 120;
}
}
else if (rotatedDiagonally)
{
xfRotate.z = -90.0f;
flippedHorizontally = FlipFlagsMask.FlippedVertically(flags);
flippedVertically = !FlipFlagsMask.FlippedHorizontally(flags);
}
xfScale.x = flippedHorizontally ? -1.0f : 1.0f;
xfScale.y = flippedVertically ? -1.0f : 1.0f;
var matScale = Matrix4x4.Scale(xfScale);
var matRotate = Matrix4x4.Rotate(Quaternion.Euler(xfRotate));
if (orientation == MapOrientation.Hexagonal)
{
// Hex tiles use the center of the tile for transforms
var anchor = new Vector3(width * 0.5f, height * 0.5f);
var transformed = matScale.MultiplyPoint(anchor);
transformed = matRotate.MultiplyPoint(transformed);
xfTranslate.x = anchor.x - transformed.x;
xfTranslate.y = anchor.y - transformed.y;
}
else
{
// Mulitply the corners for our tile against rotation and scale matrices to see what our translation should be to get the tile back to the bottom-left origin
var points = new Vector3[]
{
new Vector3(0, height, 0),
new Vector3(width, height, 0),
new Vector3(width, 0, 0),
};
points = points.Select(p => matScale.MultiplyPoint(p)).ToArray();
points = points.Select(p => matRotate.MultiplyPoint(p)).ToArray();
var minX = points.Select(p => p.x).Min();
var minY = points.Select(p => p.y).Min();
xfTranslate.x = -minX;
xfTranslate.y = -minY;
}
}
// Each tile may have an additional offset
xfTranslate.x += m_TileOffsetX * inversePPU;
xfTranslate.y -= m_TileOffsetY * inversePPU;
}