// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#include "core/fxcrt/include/fx_system.h"
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#include "core/fxge/include/fx_ge.h"
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#include "third_party/base/numerics/safe_math.h"
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CFX_ClipRgn::CFX_ClipRgn(int width, int height)
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: m_Type(RectI), m_Box(0, 0, width, height) {}
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CFX_ClipRgn::CFX_ClipRgn(const FX_RECT& rect) : m_Type(RectI), m_Box(rect) {}
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CFX_ClipRgn::CFX_ClipRgn(const CFX_ClipRgn& src) {
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m_Type = src.m_Type;
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m_Box = src.m_Box;
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m_Mask = src.m_Mask;
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}
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CFX_ClipRgn::~CFX_ClipRgn() {}
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void CFX_ClipRgn::Reset(const FX_RECT& rect) {
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m_Type = RectI;
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m_Box = rect;
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m_Mask.SetNull();
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}
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void CFX_ClipRgn::IntersectRect(const FX_RECT& rect) {
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if (m_Type == RectI) {
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m_Box.Intersect(rect);
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return;
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}
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if (m_Type == MaskF) {
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IntersectMaskRect(rect, m_Box, m_Mask);
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return;
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}
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}
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void CFX_ClipRgn::IntersectMaskRect(FX_RECT rect,
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FX_RECT mask_rect,
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CFX_DIBitmapRef Mask) {
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const CFX_DIBitmap* mask_dib = Mask.GetObject();
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m_Type = MaskF;
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m_Box = rect;
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m_Box.Intersect(mask_rect);
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if (m_Box.IsEmpty()) {
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m_Type = RectI;
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return;
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}
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if (m_Box == mask_rect) {
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m_Mask = Mask;
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return;
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}
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CFX_DIBitmap* new_dib = m_Mask.New();
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if (!new_dib) {
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return;
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}
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new_dib->Create(m_Box.Width(), m_Box.Height(), FXDIB_8bppMask);
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for (int row = m_Box.top; row < m_Box.bottom; row++) {
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uint8_t* dest_scan =
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new_dib->GetBuffer() + new_dib->GetPitch() * (row - m_Box.top);
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uint8_t* src_scan =
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mask_dib->GetBuffer() + mask_dib->GetPitch() * (row - mask_rect.top);
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for (int col = m_Box.left; col < m_Box.right; col++) {
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dest_scan[col - m_Box.left] = src_scan[col - mask_rect.left];
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}
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}
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}
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void CFX_ClipRgn::IntersectMaskF(int left, int top, CFX_DIBitmapRef Mask) {
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const CFX_DIBitmap* mask_dib = Mask.GetObject();
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ASSERT(mask_dib->GetFormat() == FXDIB_8bppMask);
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FX_RECT mask_box(left, top, left + mask_dib->GetWidth(),
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top + mask_dib->GetHeight());
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if (m_Type == RectI) {
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IntersectMaskRect(m_Box, mask_box, Mask);
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return;
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}
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if (m_Type == MaskF) {
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FX_RECT new_box = m_Box;
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new_box.Intersect(mask_box);
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if (new_box.IsEmpty()) {
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m_Type = RectI;
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m_Mask.SetNull();
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m_Box = new_box;
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return;
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}
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CFX_DIBitmapRef new_mask;
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CFX_DIBitmap* new_dib = new_mask.New();
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if (!new_dib) {
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return;
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}
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new_dib->Create(new_box.Width(), new_box.Height(), FXDIB_8bppMask);
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const CFX_DIBitmap* old_dib = m_Mask.GetObject();
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for (int row = new_box.top; row < new_box.bottom; row++) {
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uint8_t* old_scan =
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old_dib->GetBuffer() + (row - m_Box.top) * old_dib->GetPitch();
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uint8_t* mask_scan =
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mask_dib->GetBuffer() + (row - top) * mask_dib->GetPitch();
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uint8_t* new_scan =
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new_dib->GetBuffer() + (row - new_box.top) * new_dib->GetPitch();
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for (int col = new_box.left; col < new_box.right; col++) {
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new_scan[col - new_box.left] =
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old_scan[col - m_Box.left] * mask_scan[col - left] / 255;
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}
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}
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m_Box = new_box;
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m_Mask = new_mask;
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return;
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}
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ASSERT(FALSE);
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}
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CFX_PathData::CFX_PathData()
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: m_PointCount(0), m_pPoints(nullptr), m_AllocCount(0) {}
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CFX_PathData::~CFX_PathData() {
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FX_Free(m_pPoints);
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}
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void CFX_PathData::SetPointCount(int nPoints) {
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m_PointCount = nPoints;
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if (m_AllocCount < nPoints) {
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FX_Free(m_pPoints);
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m_pPoints = FX_Alloc(FX_PATHPOINT, nPoints);
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m_AllocCount = nPoints;
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}
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}
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void CFX_PathData::AllocPointCount(int nPoints) {
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if (m_AllocCount < nPoints) {
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FX_PATHPOINT* pNewBuf = FX_Alloc(FX_PATHPOINT, nPoints);
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if (m_PointCount) {
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FXSYS_memcpy(pNewBuf, m_pPoints, m_PointCount * sizeof(FX_PATHPOINT));
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}
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FX_Free(m_pPoints);
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m_pPoints = pNewBuf;
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m_AllocCount = nPoints;
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}
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}
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CFX_PathData::CFX_PathData(const CFX_PathData& src) {
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m_PointCount = m_AllocCount = src.m_PointCount;
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m_pPoints = FX_Alloc(FX_PATHPOINT, src.m_PointCount);
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FXSYS_memcpy(m_pPoints, src.m_pPoints, sizeof(FX_PATHPOINT) * m_PointCount);
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}
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void CFX_PathData::TrimPoints(int nPoints) {
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if (m_PointCount <= nPoints) {
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return;
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}
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SetPointCount(nPoints);
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}
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void CFX_PathData::AddPointCount(int addPoints) {
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pdfium::base::CheckedNumeric<int> safe_new_count = m_PointCount;
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safe_new_count += addPoints;
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int new_count = safe_new_count.ValueOrDie();
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AllocPointCount(new_count);
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m_PointCount = new_count;
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}
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void CFX_PathData::Append(const CFX_PathData* pSrc, const CFX_Matrix* pMatrix) {
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int old_count = m_PointCount;
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AddPointCount(pSrc->m_PointCount);
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FXSYS_memcpy(m_pPoints + old_count, pSrc->m_pPoints,
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pSrc->m_PointCount * sizeof(FX_PATHPOINT));
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if (pMatrix) {
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for (int i = 0; i < pSrc->m_PointCount; i++) {
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pMatrix->Transform(m_pPoints[old_count + i].m_PointX,
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m_pPoints[old_count + i].m_PointY);
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}
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}
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}
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void CFX_PathData::SetPoint(int index, FX_FLOAT x, FX_FLOAT y, int flag) {
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ASSERT(index < m_PointCount);
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m_pPoints[index].m_PointX = x;
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m_pPoints[index].m_PointY = y;
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m_pPoints[index].m_Flag = flag;
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}
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void CFX_PathData::AppendRect(FX_FLOAT left,
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FX_FLOAT bottom,
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FX_FLOAT right,
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FX_FLOAT top) {
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int old_count = m_PointCount;
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AddPointCount(5);
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FX_PATHPOINT* pPoints = m_pPoints + old_count;
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pPoints[0].m_PointX = pPoints[1].m_PointX = pPoints[4].m_PointX = left;
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pPoints[2].m_PointX = pPoints[3].m_PointX = right;
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pPoints[0].m_PointY = pPoints[3].m_PointY = pPoints[4].m_PointY = bottom;
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pPoints[1].m_PointY = pPoints[2].m_PointY = top;
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pPoints[0].m_Flag = FXPT_MOVETO;
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pPoints[1].m_Flag = pPoints[2].m_Flag = pPoints[3].m_Flag = FXPT_LINETO;
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pPoints[4].m_Flag = FXPT_LINETO | FXPT_CLOSEFIGURE;
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}
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CFX_FloatRect CFX_PathData::GetBoundingBox() const {
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CFX_FloatRect rect;
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if (m_PointCount) {
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rect.InitRect(m_pPoints[0].m_PointX, m_pPoints[0].m_PointY);
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for (int i = 1; i < m_PointCount; i++) {
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rect.UpdateRect(m_pPoints[i].m_PointX, m_pPoints[i].m_PointY);
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}
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}
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return rect;
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}
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static void _UpdateLineEndPoints(CFX_FloatRect& rect,
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FX_FLOAT start_x,
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FX_FLOAT start_y,
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FX_FLOAT end_x,
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FX_FLOAT end_y,
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FX_FLOAT hw) {
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if (start_x == end_x) {
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if (start_y == end_y) {
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rect.UpdateRect(end_x + hw, end_y + hw);
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rect.UpdateRect(end_x - hw, end_y - hw);
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return;
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}
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FX_FLOAT point_y;
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if (end_y < start_y) {
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point_y = end_y - hw;
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} else {
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point_y = end_y + hw;
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}
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rect.UpdateRect(end_x + hw, point_y);
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rect.UpdateRect(end_x - hw, point_y);
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return;
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}
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if (start_y == end_y) {
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FX_FLOAT point_x;
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if (end_x < start_x) {
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point_x = end_x - hw;
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} else {
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point_x = end_x + hw;
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}
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rect.UpdateRect(point_x, end_y + hw);
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rect.UpdateRect(point_x, end_y - hw);
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return;
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}
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FX_FLOAT dx = end_x - start_x;
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FX_FLOAT dy = end_y - start_y;
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FX_FLOAT ll = FXSYS_sqrt2(dx, dy);
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FX_FLOAT mx = end_x + hw * dx / ll;
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FX_FLOAT my = end_y + hw * dy / ll;
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FX_FLOAT dx1 = hw * dy / ll;
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FX_FLOAT dy1 = hw * dx / ll;
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rect.UpdateRect(mx - dx1, my + dy1);
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rect.UpdateRect(mx + dx1, my - dy1);
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}
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static void _UpdateLineJoinPoints(CFX_FloatRect& rect,
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FX_FLOAT start_x,
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FX_FLOAT start_y,
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FX_FLOAT middle_x,
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FX_FLOAT middle_y,
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FX_FLOAT end_x,
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FX_FLOAT end_y,
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FX_FLOAT half_width,
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FX_FLOAT miter_limit) {
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FX_FLOAT start_k = 0, start_c = 0, end_k = 0, end_c = 0, start_len = 0,
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start_dc = 0, end_len = 0, end_dc = 0;
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FX_BOOL bStartVert = FXSYS_fabs(start_x - middle_x) < 1.0f / 20;
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FX_BOOL bEndVert = FXSYS_fabs(middle_x - end_x) < 1.0f / 20;
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if (bStartVert && bEndVert) {
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int start_dir = middle_y > start_y ? 1 : -1;
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FX_FLOAT point_y = middle_y + half_width * start_dir;
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rect.UpdateRect(middle_x + half_width, point_y);
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rect.UpdateRect(middle_x - half_width, point_y);
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return;
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}
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if (!bStartVert) {
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start_k = (middle_y - start_y) / (middle_x - start_x);
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start_c = middle_y - (start_k * middle_x);
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start_len = FXSYS_sqrt2(start_x - middle_x, start_y - middle_y);
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start_dc =
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(FX_FLOAT)FXSYS_fabs(half_width * start_len / (start_x - middle_x));
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}
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if (!bEndVert) {
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end_k = (end_y - middle_y) / (end_x - middle_x);
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end_c = middle_y - (end_k * middle_x);
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end_len = FXSYS_sqrt2(end_x - middle_x, end_y - middle_y);
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end_dc = (FX_FLOAT)FXSYS_fabs(half_width * end_len / (end_x - middle_x));
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}
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if (bStartVert) {
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FX_FLOAT outside_x = start_x;
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if (end_x < start_x) {
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outside_x += half_width;
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} else {
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outside_x -= half_width;
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}
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FX_FLOAT outside_y;
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if (start_y < (end_k * start_x) + end_c) {
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outside_y = (end_k * outside_x) + end_c + end_dc;
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} else {
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outside_y = (end_k * outside_x) + end_c - end_dc;
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}
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rect.UpdateRect(outside_x, outside_y);
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return;
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}
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if (bEndVert) {
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FX_FLOAT outside_x = end_x;
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if (start_x < end_x) {
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outside_x += half_width;
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} else {
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outside_x -= half_width;
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}
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FX_FLOAT outside_y;
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if (end_y < (start_k * end_x) + start_c) {
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outside_y = (start_k * outside_x) + start_c + start_dc;
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} else {
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outside_y = (start_k * outside_x) + start_c - start_dc;
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}
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rect.UpdateRect(outside_x, outside_y);
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return;
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}
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if (FXSYS_fabs(start_k - end_k) < 1.0f / 20) {
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int start_dir = middle_x > start_x ? 1 : -1;
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int end_dir = end_x > middle_x ? 1 : -1;
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if (start_dir == end_dir) {
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_UpdateLineEndPoints(rect, middle_x, middle_y, end_x, end_y, half_width);
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} else {
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_UpdateLineEndPoints(rect, start_x, start_y, middle_x, middle_y,
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half_width);
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}
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return;
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}
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FX_FLOAT start_outside_c = start_c;
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if (end_y < (start_k * end_x) + start_c) {
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start_outside_c += start_dc;
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} else {
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start_outside_c -= start_dc;
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}
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FX_FLOAT end_outside_c = end_c;
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if (start_y < (end_k * start_x) + end_c) {
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end_outside_c += end_dc;
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} else {
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end_outside_c -= end_dc;
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}
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FX_FLOAT join_x = (end_outside_c - start_outside_c) / (start_k - end_k);
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FX_FLOAT join_y = (start_k * join_x) + start_outside_c;
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rect.UpdateRect(join_x, join_y);
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}
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CFX_FloatRect CFX_PathData::GetBoundingBox(FX_FLOAT line_width,
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FX_FLOAT miter_limit) const {
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CFX_FloatRect rect(100000 * 1.0f, 100000 * 1.0f, -100000 * 1.0f,
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-100000 * 1.0f);
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int iPoint = 0;
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FX_FLOAT half_width = line_width;
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int iStartPoint = 0;
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int iEndPoint = 0;
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int iMiddlePoint = 0;
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FX_BOOL bJoin;
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while (iPoint < m_PointCount) {
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if (m_pPoints[iPoint].m_Flag == FXPT_MOVETO) {
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iStartPoint = iPoint + 1;
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iEndPoint = iPoint;
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bJoin = FALSE;
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} else {
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if (m_pPoints[iPoint].m_Flag == FXPT_BEZIERTO) {
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rect.UpdateRect(m_pPoints[iPoint].m_PointX, m_pPoints[iPoint].m_PointY);
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rect.UpdateRect(m_pPoints[iPoint + 1].m_PointX,
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m_pPoints[iPoint + 1].m_PointY);
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iPoint += 2;
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}
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if (iPoint == m_PointCount - 1 ||
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m_pPoints[iPoint + 1].m_Flag == FXPT_MOVETO) {
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iStartPoint = iPoint - 1;
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iEndPoint = iPoint;
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bJoin = FALSE;
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} else {
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iStartPoint = iPoint - 1;
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iMiddlePoint = iPoint;
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iEndPoint = iPoint + 1;
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bJoin = TRUE;
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}
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}
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FX_FLOAT start_x = m_pPoints[iStartPoint].m_PointX;
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FX_FLOAT start_y = m_pPoints[iStartPoint].m_PointY;
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FX_FLOAT end_x = m_pPoints[iEndPoint].m_PointX;
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FX_FLOAT end_y = m_pPoints[iEndPoint].m_PointY;
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if (bJoin) {
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FX_FLOAT middle_x = m_pPoints[iMiddlePoint].m_PointX;
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FX_FLOAT middle_y = m_pPoints[iMiddlePoint].m_PointY;
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_UpdateLineJoinPoints(rect, start_x, start_y, middle_x, middle_y, end_x,
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end_y, half_width, miter_limit);
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} else {
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_UpdateLineEndPoints(rect, start_x, start_y, end_x, end_y, half_width);
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}
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iPoint++;
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}
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return rect;
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}
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void CFX_PathData::Transform(const CFX_Matrix* pMatrix) {
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if (!pMatrix) {
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return;
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}
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for (int i = 0; i < m_PointCount; i++) {
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pMatrix->Transform(m_pPoints[i].m_PointX, m_pPoints[i].m_PointY);
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}
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}
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FX_BOOL CFX_PathData::GetZeroAreaPath(CFX_PathData& NewPath,
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CFX_Matrix* pMatrix,
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FX_BOOL& bThin,
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FX_BOOL bAdjust) const {
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if (m_PointCount < 3) {
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return FALSE;
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}
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if (m_PointCount == 3 && (m_pPoints[0].m_Flag & FXPT_TYPE) == FXPT_MOVETO &&
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(m_pPoints[1].m_Flag & FXPT_TYPE) == FXPT_LINETO &&
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(m_pPoints[2].m_Flag & FXPT_TYPE) == FXPT_LINETO &&
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m_pPoints[0].m_PointX == m_pPoints[2].m_PointX &&
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m_pPoints[0].m_PointY == m_pPoints[2].m_PointY) {
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NewPath.AddPointCount(2);
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if (bAdjust) {
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if (pMatrix) {
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FX_FLOAT x = m_pPoints[0].m_PointX, y = m_pPoints[0].m_PointY;
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pMatrix->TransformPoint(x, y);
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x = (int)x + 0.5f;
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y = (int)y + 0.5f;
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NewPath.SetPoint(0, x, y, FXPT_MOVETO);
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x = m_pPoints[1].m_PointX, y = m_pPoints[1].m_PointY;
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pMatrix->TransformPoint(x, y);
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x = (int)x + 0.5f;
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y = (int)y + 0.5f;
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NewPath.SetPoint(1, x, y, FXPT_LINETO);
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pMatrix->SetIdentity();
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} else {
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FX_FLOAT x = (int)m_pPoints[0].m_PointX + 0.5f,
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y = (int)m_pPoints[0].m_PointY + 0.5f;
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NewPath.SetPoint(0, x, y, FXPT_MOVETO);
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x = (int)m_pPoints[1].m_PointX + 0.5f,
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y = (int)m_pPoints[1].m_PointY + 0.5f;
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NewPath.SetPoint(1, x, y, FXPT_LINETO);
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}
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} else {
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NewPath.SetPoint(0, m_pPoints[0].m_PointX, m_pPoints[0].m_PointY,
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FXPT_MOVETO);
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NewPath.SetPoint(1, m_pPoints[1].m_PointX, m_pPoints[1].m_PointY,
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FXPT_LINETO);
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}
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if (m_pPoints[0].m_PointX != m_pPoints[1].m_PointX &&
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m_pPoints[0].m_PointY != m_pPoints[1].m_PointY) {
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bThin = TRUE;
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}
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return TRUE;
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}
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if (((m_PointCount > 3) && (m_PointCount % 2))) {
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int mid = m_PointCount / 2;
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FX_BOOL bZeroArea = FALSE;
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CFX_PathData t_path;
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for (int i = 0; i < mid; i++) {
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if (!(m_pPoints[mid - i - 1].m_PointX ==
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m_pPoints[mid + i + 1].m_PointX &&
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m_pPoints[mid - i - 1].m_PointY ==
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m_pPoints[mid + i + 1].m_PointY &&
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((m_pPoints[mid - i - 1].m_Flag & FXPT_TYPE) != FXPT_BEZIERTO &&
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(m_pPoints[mid + i + 1].m_Flag & FXPT_TYPE) != FXPT_BEZIERTO))) {
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bZeroArea = TRUE;
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break;
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}
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int new_count = t_path.GetPointCount();
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t_path.AddPointCount(2);
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t_path.SetPoint(new_count, m_pPoints[mid - i].m_PointX,
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m_pPoints[mid - i].m_PointY, FXPT_MOVETO);
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t_path.SetPoint(new_count + 1, m_pPoints[mid - i - 1].m_PointX,
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m_pPoints[mid - i - 1].m_PointY, FXPT_LINETO);
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}
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if (!bZeroArea) {
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NewPath.Append(&t_path, nullptr);
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bThin = TRUE;
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return TRUE;
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}
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}
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int stratPoint = 0;
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int next = 0, i;
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for (i = 0; i < m_PointCount; i++) {
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int point_type = m_pPoints[i].m_Flag & FXPT_TYPE;
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if (point_type == FXPT_MOVETO) {
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stratPoint = i;
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} else if (point_type == FXPT_LINETO) {
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next = (i + 1 - stratPoint) % (m_PointCount - stratPoint) + stratPoint;
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if ((m_pPoints[next].m_Flag & FXPT_TYPE) != FXPT_BEZIERTO &&
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(m_pPoints[next].m_Flag & FXPT_TYPE) != FXPT_MOVETO) {
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if ((m_pPoints[i - 1].m_PointX == m_pPoints[i].m_PointX &&
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m_pPoints[i].m_PointX == m_pPoints[next].m_PointX) &&
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((m_pPoints[i].m_PointY - m_pPoints[i - 1].m_PointY) *
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(m_pPoints[i].m_PointY - m_pPoints[next].m_PointY) >
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0)) {
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int pre = i;
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if (FXSYS_fabs(m_pPoints[i].m_PointY - m_pPoints[i - 1].m_PointY) <
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FXSYS_fabs(m_pPoints[i].m_PointY - m_pPoints[next].m_PointY)) {
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pre--;
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next--;
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}
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int new_count = NewPath.GetPointCount();
|
NewPath.AddPointCount(2);
|
NewPath.SetPoint(new_count, m_pPoints[pre].m_PointX,
|
m_pPoints[pre].m_PointY, FXPT_MOVETO);
|
NewPath.SetPoint(new_count + 1, m_pPoints[next].m_PointX,
|
m_pPoints[next].m_PointY, FXPT_LINETO);
|
} else if ((m_pPoints[i - 1].m_PointY == m_pPoints[i].m_PointY &&
|
m_pPoints[i].m_PointY == m_pPoints[next].m_PointY) &&
|
((m_pPoints[i].m_PointX - m_pPoints[i - 1].m_PointX) *
|
(m_pPoints[i].m_PointX - m_pPoints[next].m_PointX) >
|
0)) {
|
int pre = i;
|
if (FXSYS_fabs(m_pPoints[i].m_PointX - m_pPoints[i - 1].m_PointX) <
|
FXSYS_fabs(m_pPoints[i].m_PointX - m_pPoints[next].m_PointX)) {
|
pre--;
|
next--;
|
}
|
int new_count = NewPath.GetPointCount();
|
NewPath.AddPointCount(2);
|
NewPath.SetPoint(new_count, m_pPoints[pre].m_PointX,
|
m_pPoints[pre].m_PointY, FXPT_MOVETO);
|
NewPath.SetPoint(new_count + 1, m_pPoints[next].m_PointX,
|
m_pPoints[next].m_PointY, FXPT_LINETO);
|
} else if ((m_pPoints[i - 1].m_Flag & FXPT_TYPE) == FXPT_MOVETO &&
|
(m_pPoints[next].m_Flag & FXPT_TYPE) == FXPT_LINETO &&
|
m_pPoints[i - 1].m_PointX == m_pPoints[next].m_PointX &&
|
m_pPoints[i - 1].m_PointY == m_pPoints[next].m_PointY &&
|
m_pPoints[next].m_Flag & FXPT_CLOSEFIGURE) {
|
int new_count = NewPath.GetPointCount();
|
NewPath.AddPointCount(2);
|
NewPath.SetPoint(new_count, m_pPoints[i - 1].m_PointX,
|
m_pPoints[i - 1].m_PointY, FXPT_MOVETO);
|
NewPath.SetPoint(new_count + 1, m_pPoints[i].m_PointX,
|
m_pPoints[i].m_PointY, FXPT_LINETO);
|
bThin = TRUE;
|
}
|
}
|
} else if (point_type == FXPT_BEZIERTO) {
|
i += 2;
|
continue;
|
}
|
}
|
if (m_PointCount > 3 && NewPath.GetPointCount()) {
|
bThin = TRUE;
|
}
|
if (NewPath.GetPointCount() == 0) {
|
return FALSE;
|
}
|
return TRUE;
|
}
|
|
FX_BOOL CFX_PathData::IsRect() const {
|
if (m_PointCount != 5 && m_PointCount != 4) {
|
return FALSE;
|
}
|
if ((m_PointCount == 5 && (m_pPoints[0].m_PointX != m_pPoints[4].m_PointX ||
|
m_pPoints[0].m_PointY != m_pPoints[4].m_PointY)) ||
|
(m_pPoints[0].m_PointX == m_pPoints[2].m_PointX &&
|
m_pPoints[0].m_PointY == m_pPoints[2].m_PointY) ||
|
(m_pPoints[1].m_PointX == m_pPoints[3].m_PointX &&
|
m_pPoints[1].m_PointY == m_pPoints[3].m_PointY)) {
|
return FALSE;
|
}
|
if (m_pPoints[0].m_PointX != m_pPoints[3].m_PointX &&
|
m_pPoints[0].m_PointY != m_pPoints[3].m_PointY) {
|
return FALSE;
|
}
|
for (int i = 1; i < 4; i++) {
|
if ((m_pPoints[i].m_Flag & FXPT_TYPE) != FXPT_LINETO) {
|
return FALSE;
|
}
|
if (m_pPoints[i].m_PointX != m_pPoints[i - 1].m_PointX &&
|
m_pPoints[i].m_PointY != m_pPoints[i - 1].m_PointY) {
|
return FALSE;
|
}
|
}
|
return m_PointCount == 5 || (m_pPoints[3].m_Flag & FXPT_CLOSEFIGURE);
|
}
|
|
FX_BOOL CFX_PathData::IsRect(const CFX_Matrix* pMatrix,
|
CFX_FloatRect* pRect) const {
|
if (!pMatrix) {
|
if (!IsRect()) {
|
return FALSE;
|
}
|
if (pRect) {
|
pRect->left = m_pPoints[0].m_PointX;
|
pRect->right = m_pPoints[2].m_PointX;
|
pRect->bottom = m_pPoints[0].m_PointY;
|
pRect->top = m_pPoints[2].m_PointY;
|
pRect->Normalize();
|
}
|
return TRUE;
|
}
|
if (m_PointCount != 5 && m_PointCount != 4) {
|
return FALSE;
|
}
|
if ((m_PointCount == 5 && (m_pPoints[0].m_PointX != m_pPoints[4].m_PointX ||
|
m_pPoints[0].m_PointY != m_pPoints[4].m_PointY)) ||
|
(m_pPoints[1].m_PointX == m_pPoints[3].m_PointX &&
|
m_pPoints[1].m_PointY == m_pPoints[3].m_PointY)) {
|
return FALSE;
|
}
|
if (m_PointCount == 4 && m_pPoints[0].m_PointX != m_pPoints[3].m_PointX &&
|
m_pPoints[0].m_PointY != m_pPoints[3].m_PointY) {
|
return FALSE;
|
}
|
FX_FLOAT x[5], y[5];
|
for (int i = 0; i < m_PointCount; i++) {
|
pMatrix->Transform(m_pPoints[i].m_PointX, m_pPoints[i].m_PointY, x[i],
|
y[i]);
|
if (i) {
|
if ((m_pPoints[i].m_Flag & FXPT_TYPE) != FXPT_LINETO) {
|
return FALSE;
|
}
|
if (x[i] != x[i - 1] && y[i] != y[i - 1]) {
|
return FALSE;
|
}
|
}
|
}
|
if (pRect) {
|
pRect->left = x[0];
|
pRect->right = x[2];
|
pRect->bottom = y[0];
|
pRect->top = y[2];
|
pRect->Normalize();
|
}
|
return TRUE;
|
}
|
|
void CFX_PathData::Copy(const CFX_PathData& src) {
|
SetPointCount(src.m_PointCount);
|
FXSYS_memcpy(m_pPoints, src.m_pPoints, sizeof(FX_PATHPOINT) * m_PointCount);
|
}
|
|
CFX_GraphStateData::CFX_GraphStateData()
|
: m_LineCap(LineCapButt),
|
m_DashCount(0),
|
m_DashArray(nullptr),
|
m_DashPhase(0),
|
m_LineJoin(LineJoinMiter),
|
m_MiterLimit(10 * 1.0f),
|
m_LineWidth(1.0f) {}
|
|
CFX_GraphStateData::CFX_GraphStateData(const CFX_GraphStateData& src) {
|
m_DashArray = nullptr;
|
Copy(src);
|
}
|
|
void CFX_GraphStateData::Copy(const CFX_GraphStateData& src) {
|
m_LineCap = src.m_LineCap;
|
m_DashCount = src.m_DashCount;
|
FX_Free(m_DashArray);
|
m_DashArray = nullptr;
|
m_DashPhase = src.m_DashPhase;
|
m_LineJoin = src.m_LineJoin;
|
m_MiterLimit = src.m_MiterLimit;
|
m_LineWidth = src.m_LineWidth;
|
if (m_DashCount) {
|
m_DashArray = FX_Alloc(FX_FLOAT, m_DashCount);
|
FXSYS_memcpy(m_DashArray, src.m_DashArray, m_DashCount * sizeof(FX_FLOAT));
|
}
|
}
|
|
CFX_GraphStateData::~CFX_GraphStateData() {
|
FX_Free(m_DashArray);
|
}
|
|
void CFX_GraphStateData::SetDashCount(int count) {
|
FX_Free(m_DashArray);
|
m_DashArray = nullptr;
|
m_DashCount = count;
|
if (count == 0) {
|
return;
|
}
|
m_DashArray = FX_Alloc(FX_FLOAT, count);
|
}
|
