public static float inv_determinant(uiMatrix3 mat, int isPerspective)
{
double det;
if (isPerspective != 0)
{
det = mat.kMScaleX *
dcross(mat.kMScaleY, mat.kMPersp2,
mat.kMTransY, mat.kMPersp1)
+
mat.kMSkewX *
dcross(mat.kMTransY, mat.kMPersp0,
mat.kMSkewY, mat.kMPersp2)
+
mat.kMTransX *
dcross(mat.kMSkewY, mat.kMPersp1,
mat.kMScaleY, mat.kMPersp0);
}
else
{
det = dcross(mat.kMScaleX, mat.kMScaleY,
mat.kMSkewX, mat.kMSkewY);
}
// Since the determinant is on the order of the cube of the matrix members,
// compare to the cube of the default nearly-zero constant (although an
// estimate of the condition number would be better if it wasn't so expensive).
if (ScalarNearlyZero((float)det,
kScalarNearlyZero * kScalarNearlyZero * kScalarNearlyZero))
{
return(0);
}
return(1.0f / (float)det);
}
public static ClipElement create(int saveCount, uiPath uiPath, uiMatrix3 matrix, float scale)
{
ClipElement newElement = ObjectPool <ClipElement> .alloc();
newElement.saveCount = saveCount;
var pathCache = uiPath.flatten(scale);
var fillMesh = pathCache.getFillMesh(out newElement.convex);
newElement.mesh = fillMesh.transform(matrix);
var vertices = newElement.mesh.vertices;
if (newElement.convex && vertices.Count == 4 && matrix.rectStaysRect() &&
(Mathf.Abs(vertices[0].x - vertices[1].x) < 1e-6 && Mathf.Abs(vertices[1].y - vertices[2].y) < 1e-6 &&
Mathf.Abs(vertices[2].x - vertices[3].x) < 1e-6 && Mathf.Abs(vertices[3].y - vertices[0].y) < 1e-6 ||
Mathf.Abs(vertices[0].y - vertices[1].y) < 1e-6 && Mathf.Abs(vertices[1].x - vertices[2].x) < 1e-6 &&
Mathf.Abs(vertices[2].y - vertices[3].y) < 1e-6 && Mathf.Abs(vertices[3].x - vertices[0].x) < 1e-6))
{
newElement.isRect = true;
newElement.rect = newElement.mesh.bounds;
}
else
{
newElement.isRect = false;
newElement.rect = null;
}
return(newElement);
}
static void Persp_pts(uiMatrix3 m, uiOffset[] dst, uiOffset[] src, int count)
{
D.assert(m._hasPerspective());
if (count > 0)
{
for (int i = 0; i < count; ++i)
{
var sy = src[i].dy;
var sx = src[i].dx;
var x = uiScalarUtils.sdot(sx, m.kMScaleX, sy, m.kMSkewX) +
m.kMTransX;
var y = uiScalarUtils.sdot(sx, m.kMSkewY, sy, m.kMScaleY) +
m.kMTransY;
var z = uiScalarUtils.sdot(sx, m.kMPersp0, sy, m.kMPersp1) +
m.kMPersp2;
if (z != 0)
{
z = 1 / z;
}
dst[i] = new uiOffset(x * z, y * z);
}
}
}
void _concat(uiMatrix3 matrix)
{
var state = this._currentLayer.currentState;
matrix = new uiMatrix3(matrix);
matrix.postConcat(state.matrix.Value);
state.matrix = matrix;
}
public static bool ScalarsAreFinite(uiMatrix3 m)
{
float prod = m.kMScaleX * m.kMSkewX * m.kMTransX * m.kMSkewY * m.kMScaleY * m.kMTransY * m.kMPersp0 *
m.kMPersp1 * m.kMPersp2;
// At this point, prod will either be NaN or 0
return(prod == 0); // if prod is NaN, this check will return false
}
static void Identity_pts(uiMatrix3 m, uiOffset[] dst, uiOffset[] src, int count)
{
D.assert(m._getType() == 0);
if (dst != src && count > 0)
{
Array.Copy(src, dst, count);
}
}
public static TextBlobMesh create(TextBlob textBlob, float scale, uiMatrix3 matrix)
{
TextBlobMesh newMesh = ObjectPool <TextBlobMesh> .alloc();
newMesh.textBlob = textBlob;
newMesh.scale = scale;
newMesh.matrix = matrix;
return(newMesh);
}
public uiMatrix3 getGradientMat(uiMatrix3 mat)
{
if (this.matrix != null)
{
mat.postConcat(this.matrix.Value);
}
mat.postConcat(this.ptsToUnit);
return(mat);
}
public uiMatrix3 getShaderMat(uiMatrix3 mat)
{
if (this.matrix != null)
{
mat.postConcat(this.matrix.Value);
}
mat.postScale(1f / this.image.width, 1f / this.image.height);
return(mat);
}
static void Trans_pts(uiMatrix3 m, uiOffset[] dst, uiOffset[] src, int count)
{
D.assert(m._getType() <= TypeMask.kTranslate_Mask);
if (count > 0)
{
var tx = m.getTranslateX();
var ty = m.getTranslateY();
for (int i = 0; i < count; ++i)
{
dst[i] = new uiOffset(src[i].dx + tx, src[i].dy + ty);
}
}
}
static void Scale_pts(uiMatrix3 m, ref uiOffset[] dst, ref uiOffset[] src, int count)
{
D.assert(m._getType() <= (TypeMask.kScale_Mask | TypeMask.kTranslate_Mask));
if (count > 0)
{
var tx = m.getTranslateX();
var ty = m.getTranslateY();
var sx = m.getScaleX();
var sy = m.getScaleY();
for (int i = 0; i < count; ++i)
{
dst[i] = new uiOffset(src[i].dx * sx + tx, src[i].dy * sy + ty);
}
}
}
public static float getScaleX(uiMatrix3 matrix)
{
// ignore perspective parameters for now.
if (matrix.isIdentity())
{
return(1.0f);
}
if (matrix.getSkewY() == 0)
{
return(matrix.getScaleX());
}
var x = matrix.getScaleX();
var y = matrix.getSkewY();
return(Mathf.Sqrt(x * x + y * y));
}
public static float getScale(uiMatrix3 matrix)
{
var scaleX = getScaleX(matrix);
var scaleY = getScaleY(matrix);
if (scaleX == 1.0)
{
return(scaleY);
}
if (scaleY == 1.0)
{
return(scaleX);
}
// geometric mean of len0 and len1.
return(Mathf.Sqrt(scaleX * scaleY));
}
static void Affine_pts(uiMatrix3 m, uiOffset[] dst, uiOffset[] src, int count)
{
D.assert(m._getType() != TypeMask.kPerspective_Mask);
if (count > 0)
{
var tx = m.getTranslateX();
var ty = m.getTranslateY();
var sx = m.getScaleX();
var sy = m.getScaleY();
var kx = m.getSkewX();
var ky = m.getSkewY();
for (int i = 0; i < count; ++i)
{
dst[i] = new uiOffset(
src[i].dx * sx + src[i].dy * kx + tx,
src[i].dx * ky + src[i].dy * sy + ty);
}
}
}
void _drawTextBlob(TextBlob?textBlob, uiOffset offset, uiPaint paint)
{
D.assert(textBlob != null);
var state = this._currentLayer.currentState;
var scale = state.scale * this._devicePixelRatio;
var matrix = new uiMatrix3(state.matrix.Value);
matrix.preTranslate(offset.dx, offset.dy);
var mesh = TextBlobMesh.create(textBlob.Value, scale, matrix);
var textBlobBounds = matrix.mapRect(uiRectHelper.fromRect(textBlob.Value.boundsInText));
// request font texture so text mesh could be generated correctly
var style = textBlob.Value.style;
var font = FontManager.instance.getOrCreate(style.fontFamily, style.fontWeight, style.fontStyle).font;
var fontSizeToLoad = Mathf.CeilToInt(style.UnityFontSize * scale);
var subText = textBlob.Value.text.Substring(textBlob.Value.textOffset, textBlob.Value.textSize);
Texture tex = null;
bool notEmoji = !char.IsHighSurrogate(subText[0]) && !EmojiUtils.isSingleCharEmoji(subText[0]);
if (notEmoji)
{
font.RequestCharactersInTextureSafe(subText, fontSizeToLoad, style.UnityFontStyle);
tex = font.material.mainTexture;
}
if (paint.maskFilter != null && paint.maskFilter.Value.sigma != 0)
{
this._drawWithMaskFilter(textBlobBounds, paint, paint.maskFilter.Value, null, null, false, 0, 0, tex,
textBlobBounds, mesh, notEmoji, this.___drawTextDrawMeshCallback);
return;
}
this._drawTextDrawMeshCallback(paint, null, null, false, 0, 0, tex, textBlobBounds, mesh, notEmoji);
}
public void clipPath(uiPath uiPath, uiMatrix3 matrix, float scale)
{
var element = ClipElement.create(this._saveCount, uiPath, matrix, scale);
this._pushElement(element);
}
void _setMatrix(uiMatrix3 matrix)
{
var state = this._currentLayer.currentState;
state.matrix = new uiMatrix3(matrix);
}
public _uiMatrixImageFilter(uiMatrix3 transform, FilterMode filterMode)
{
this.transform = transform;
this.filterMode = filterMode;
}
public static uiImageFilter matrix(uiMatrix3 transform, FilterMode filterMode = FilterMode.Bilinear)
{
return(new _uiMatrixImageFilter(transform, filterMode));
}