float mgnear::quadSplinesHit(int n, const Point2d* knots, bool closed,
const Point2d& pt, float tol, Point2d& nearpt, int& segment)
{
Point2d ptTemp;
float dist, distMin = _FLT_MAX;
Point2d pts[3 + 4];
const Box2d rect (pt, 2 * tol, 2 * tol);
segment = -1;
for (int i = 0; i < (closed ? n : n - 2); i++, pts[0] = pts[2]) {
if (i == 0) {
pts[0] = closed ? (knots[0] + knots[1]) / 2 : knots[0];
}
pts[1] = knots[(i+1) % n];
if (closed || i + 3 < n)
pts[2] = (knots[(i+1) % n] + knots[(i+2) % n]) / 2;
else
pts[2] = knots[i+2];
mgcurv::quadBezierToCubic(pts, pts + 3);
if (rect.isIntersect(computeCubicBox(pts + 3))) {
dist = mgnear::nearestOnBezier(pt, pts + 3, ptTemp);
if (dist < distMin) {
distMin = dist;
nearpt = ptTemp;
segment = i;
}
}
}
return distMin;
}
void NormalFilter::render(const ITextureObject& texture, const ICamera<float>& renderedCamera)
{
const Box2d<float> box(Vector2d<float>(-1.0, -1.0), Vector2d<float>(1.0, 1.0));
const auto& positions = box.toArray();
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);
//glDisable(GL_DEPTH_TEST);
glUseProgram(shader.getId());
texture.bind();
//glGetUniformLocation( texture.getId()
glUniform1i(shader.getUniformLocation("depthTex"), texture.getId());
glUniform1f(shader.getUniformLocation("texelSizeW"), 1.0f / static_cast<float>(texture.getWidth()));
glUniform1f(shader.getUniformLocation("texelSizeH"), 1.0f / static_cast<float>(texture.getHeight()));
glUniformMatrix4fv(shader.getUniformLocation("projectionMatrix"), 1, GL_FALSE, renderedCamera.getProjectionMatrix().toArray().data());
glVertexAttribPointer(shader.getAttribLocation("positions"), 2, GL_FLOAT, GL_FALSE, 0, positions.data());
glEnableVertexAttribArray(0);
glDrawArrays(GL_QUADS, 0, static_cast<GLsizei>( positions.size() / 2) );
glDisableVertexAttribArray(0);
glBindFragDataLocation(shader.getId(), 0, "fragColor");
texture.unbind();
glDisable(GL_DEPTH_TEST);
glUseProgram(0);
}
bool GiGraphics::setClipBox(const RECT_2D& rc)
{
if (m_impl->drawRefcnt < 1)
return false;
bool ret = false;
Box2d rect;
if (!rect.intersectWith(Box2d(rc), Box2d(m_impl->clipBox0)).isEmpty())
{
if (rect != Box2d(m_impl->clipBox))
{
rect.get(m_impl->clipBox);
m_impl->rectDraw.set(Box2d(rc));
m_impl->rectDraw.inflate(GiGraphicsImpl::CLIP_INFLATE);
m_impl->rectDrawM = m_impl->rectDraw * xf().displayToModel();
m_impl->rectDrawW = m_impl->rectDrawM * xf().modelToWorld();
SafeCall(m_impl->canvas, clipRect(m_impl->clipBox.left, m_impl->clipBox.top,
m_impl->clipBox.width(),
m_impl->clipBox.height()));
}
ret = true;
}
return ret;
}
float mgnear::cubicSplinesHit(
int n, const Point2d* knots, const Vector2d* knotvs, bool closed,
const Point2d& pt, float tol, Point2d& nearpt, int& segment, bool hermite)
{
Point2d ptTemp;
float dist, distMin = _FLT_MAX;
Point2d pts[4];
const Box2d rect (pt, 2 * tol, 2 * tol);
int n2 = (closed && n > 1) ? n + 1 : n;
segment = -1;
for (int i = 0; i + 1 < n2; i++) {
mgcurv::cubicSplineToBezier(n, knots, knotvs, i, pts, hermite);
if (rect.isIntersect(computeCubicBox(pts))) {
dist = mgnear::nearestOnBezier(pt, pts, ptTemp);
if (dist < distMin) {
distMin = dist;
nearpt = ptTemp;
segment = i;
}
}
}
return distMin;
}
bool GiGraphics::setClipWorld(const Box2d& rectWorld)
{
bool ret = false;
if (isDrawing() && !rectWorld.isEmpty())
{
Box2d box (rectWorld * xf().worldToDisplay());
box.intersectWith(Box2d(m_impl->clipBox0));
if (!box.isEmpty(Tol(1, 0)))
{
if (box != Box2d(m_impl->clipBox))
{
box.get(m_impl->clipBox);
m_impl->rectDraw = box;
m_impl->rectDraw.inflate(GiGraphicsImpl::CLIP_INFLATE);
m_impl->rectDrawM = m_impl->rectDraw * xf().displayToModel();
m_impl->rectDrawW = m_impl->rectDrawM * xf().modelToWorld();
SafeCall(m_impl->canvas, _clipBoxChanged(m_impl->clipBox));
}
ret = true;
}
}
return ret;
}
float MgEllipse::_hitTest(const Point2d& pt, float tol, MgHitResult& res) const
{
if (isCircle()) {
Point2d pt1(getCenter()), pt2(pt);
crossCircle(pt1, pt2, this);
float d1 = pt.distanceTo(pt1);
float d2 = pt.distanceTo(pt2);
res.nearpt = d1 < d2 ? pt1 : pt2;
return mgMin(d1, d2);
}
float distMin = _FLT_MAX;
const Box2d rect (pt, 2 * tol, 2 * tol);
Point2d ptTemp;
for (int i = 0; i < 4; i++) {
if (rect.isIntersect(Box2d(4, _bzpts + 3 * i))) {
mgnear::nearestOnBezier(pt, _bzpts + 3 * i, ptTemp);
float dist = pt.distanceTo(ptTemp);
if (dist <= tol && dist < distMin) {
distMin = dist;
res.nearpt = ptTemp;
res.segment = i;
}
}
}
return distMin;
}
float MgEllipse::_hitTest(const Point2d& pt, float tol,
Point2d& nearpt, int& segment) const
{
float distMin = _FLT_MAX;
const Box2d rect (pt, 2 * tol, 2 * tol);
Point2d ptTemp;
segment = -1;
for (int i = 0; i < 4; i++)
{
if (rect.isIntersect(Box2d(4, _bzpts + 3 * i)))
{
mgNearestOnBezier(pt, _bzpts + 3 * i, ptTemp);
float dist = pt.distanceTo(ptTemp);
if (dist <= tol && dist < distMin)
{
distMin = dist;
nearpt = ptTemp;
segment = i;
}
}
}
return distMin;
}
void OnScreenRenderer::render(const ITextureObject& texture)
{
const Box2d<float> box(Vector2d<float>(-1.0, -1.0), Vector2d<float>(1.0, 1.0));
const auto& positions = box.toArray();
//glEnable(GL_DEPTH_TEST);
glUseProgram(shader.getId());
texture.bind();
glUniform1i(shader.getUniformLocation("texture"), texture.getId());
glVertexAttribPointer(shader.getAttribLocation("positions"), 2, GL_FLOAT, GL_FALSE, 0, positions.data());
glEnableVertexAttribArray(0);
glDrawArrays(GL_QUADS, 0, static_cast<GLsizei>( positions.size() / 2) );
glDisableVertexAttribArray(0);
glBindFragDataLocation(shader.getId(), 0, "fragColor");
texture.unbind();
//glDisable(GL_DEPTH_TEST);
glUseProgram(0);
}
inline Pt2dr PQ2(const Box2d<Type> & b,INT c1,INT c2)
{
return Pt2dr
(
b.x(TAB_IND_Q2X[c1][c2]),
b.y(TAB_IND_Q2Y[c1][c2])
);
}
bool mglnrel::clipLine(Point2d& pt1, Point2d& pt2, const Box2d& _box)
{
Box2d box (_box);
box.normalize();
unsigned code1, code2;
code1 = ClipCode(pt1, box);
code2 = ClipCode(pt2, box);
for ( ; ; )
{
if (!(code1 | code2)) // 完全在矩形内
return true;
if (code1 & code2) // 完全在矩形外
return false;
float x = 0.f, y = 0.f;
unsigned code;
if (code1) // 起点不在矩形内
code = code1;
else // 终点不在矩形内
code = code2;
if (code & 0x1000) // 上
{
x = pt1.x + (pt2.x - pt1.x) * (box.ymax - pt1.y) / (pt2.y - pt1.y);
y = box.ymax;
}
else if (code & 0x0100) // 下
{
x = pt1.x + (pt2.x - pt1.x) * (box.ymin - pt1.y) / (pt2.y - pt1.y);
y = box.ymin;
}
else if (code & 0x0001) // 左
{
y = pt1.y + (pt2.y - pt1.y) * (box.xmin - pt1.x) / (pt2.x - pt1.x);
x = box.xmin;
}
else if (code & 0x0010) // 右
{
y = pt1.y + (pt2.y - pt1.y) * (box.xmax - pt1.x) / (pt2.x - pt1.x);
x = box.xmax;
}
if (code == code1)
{
pt1.x = x;
pt1.y = y;
code1 = ClipCode(pt1, box);
}
else
{
pt2.x = x;
pt2.y = y;
code2 = ClipCode(pt2, box);
}
}
}
bool GiGraphics::drawRect(const GiContext* ctx, const Box2d& rect,
bool modelUnit)
{
Point2d points[4] = {
rect.leftBottom(), rect.rightBottom(),
rect.rightTop(), rect.leftTop()
};
return drawPolygon(ctx, 4, points, modelUnit);
}
void CScrollShapeView::OnZoomed()
{
CRandomShapeView::OnZoomed();
Box2d rect;
// m_rcLimits: 极限范围对应的坐标范围, 像素
rect = m_shapes->getExtent() * m_graph->xf.modelToDisplay();
rect.inflate(1, 1);
rect.get(m_rcLimits);
// m_rcScrWnd: 当前窗口对应的坐标范围, 像素
rect = Box2d(m_graph->xf.getCenterW(),
m_graph->xf.getWidth() / m_graph->xf.getWorldToDisplayX(),
m_graph->xf.getHeight() / m_graph->xf.getWorldToDisplayY());
rect *= m_graph->xf.worldToDisplay();
rect.get(m_rcScrWnd);
// 以m_rcLimits左上角为原点调整m_rcScrWnd和m_rcLimits
::OffsetRect(&m_rcScrWnd, -m_rcLimits.left, -m_rcLimits.top);
::OffsetRect(&m_rcLimits, -m_rcLimits.left, -m_rcLimits.top);
// 避免m_rcScrWnd部分超出m_rcLimits
::UnionRect(&m_rcLimits, &m_rcLimits, &m_rcScrWnd);
SCROLLINFO si;
si.cbSize = sizeof(si);
si.fMask = SIF_RANGE | SIF_PAGE | SIF_POS;
si.nMin = 0;
if (m_rcLimits.right - m_rcLimits.left > m_rcScrWnd.right - m_rcScrWnd.left)
{
si.nMax = max(1, m_rcLimits.right - m_rcLimits.left);
si.nPage = m_rcScrWnd.right - m_rcScrWnd.left;
si.nPos = m_rcScrWnd.left;
::EnableScrollBar(m_hWnd, SB_HORZ, ESB_ENABLE_BOTH);
::SetScrollInfo(m_hWnd, SB_HORZ, &si, TRUE);
}
else
{
::EnableScrollBar(m_hWnd, SB_HORZ, ESB_DISABLE_BOTH);
}
if (m_rcLimits.bottom - m_rcLimits.top > m_rcScrWnd.bottom - m_rcScrWnd.top)
{
si.nMax = max(1, m_rcLimits.bottom - m_rcLimits.top);
si.nPage = m_rcScrWnd.bottom - m_rcScrWnd.top;
si.nPos = m_rcScrWnd.top;
::EnableScrollBar(m_hWnd, SB_VERT, ESB_ENABLE_BOTH);
::SetScrollInfo(m_hWnd, SB_VERT, &si, TRUE);
}
else
{
::EnableScrollBar(m_hWnd, SB_VERT, ESB_DISABLE_BOTH);
}
}
Box2d MgShapeDoc::getExtent() const
{
Box2d rect;
for (unsigned i = 0; i < im->layers.size(); i++) {
rect.unionWith(im->layers[i]->getExtent());
}
return rect;
}
bool GiGraphics::drawRoundRect(const GiContext* ctx,
const Box2d& rect, float rx, float ry,
bool modelUnit)
{
if (m_impl->drawRefcnt == 0 || rect.isEmpty())
return false;
GiLock lock (&m_impl->drawRefcnt);
bool ret = false;
if (ry < _MGZERO)
ry = rx;
if (!DRAW_RECT(m_impl, modelUnit).isIntersect(rect)) // 全部在显示区域外
return false;
if (rx < _MGZERO)
{
Point2d points[4] = {
rect.leftBottom(), rect.rightBottom(),
rect.rightTop(), rect.leftTop()
};
return drawPolygon(ctx, 4, points);
}
else
{
Point2d points[16];
mgRoundRectToBeziers(points, rect, rx, ry);
S2D(xf(), modelUnit).TransformPoints(16, points);
ret = rawBeginPath();
if (ret)
{
ret = rawMoveTo(points[0].x, points[0].y);
ret = rawBezierTo(&points[1], 3);
ret = rawLineTo(points[4].x, points[4].y);
ret = rawBezierTo(&points[5], 3);
ret = rawLineTo(points[8].x, points[8].y);
ret = rawBezierTo(&points[9], 3);
ret = rawLineTo(points[12].x, points[12].y);
ret = rawBezierTo(&points[13], 3);
ret = rawClosePath();
ret = rawEndPath(ctx, true);
}
}
return ret;
}
void MgCmdManagerImpl::getBoundingBox(Box2d& box, const MgMotion* sender)
{
MgCommand* cmd = sender->cmds()->getCommand();
Box2d selbox;
if (cmd && strcmp(cmd->getName(), MgCmdSelect::Name()) == 0) {
MgCmdSelect* sel = (MgCmdSelect*)cmd;
selbox = sel->getBoundingBox(sender);
}
box = selbox.isEmpty() ? Box2d(sender->pointM, 0, 0) : selbox;
box *= sender->view->xform()->modelToDisplay();
box.normalize();
}
void mgnear::beziersBox(
Box2d& box, int count, const Point2d* points, bool closed)
{
box.empty();
for (int i = 0; i + 3 < count; i += 3) {
box.unionWith(computeCubicBox(points + i));
}
if (closed && count > 3) {
box.unionWith(computeCubicBox(points[count - 1],
points[count - 1] * 2 - points[count - 2].asVector(),
points[0] * 2 - points[1].asVector(), points[0]));
}
}
void MgBaseRect::setRect(const Box2d& rect, float angle)
{
_points[0] = rect.leftTop();
_points[1] = rect.rightTop();
_points[2] = rect.rightBottom();
_points[3] = rect.leftBottom();
if (!mgIsZero(angle))
{
Matrix2d mat(Matrix2d::rotation(angle, rect.center()));
for (int i = 0; i < 4; i++)
_points[i] *= mat;
}
}
float mgnear::linesHit(
int n, const Point2d* points, bool closed,
const Point2d& pt, float tol, Point2d& nearpt, int& segment,
bool* inside, int* hitType)
{
Point2d ptTemp;
float dist, distMin = _FLT_MAX;
const Box2d rect (pt, 2 * tol, 2 * tol);
int n2 = (closed && n > 1) ? n + 1 : n;
int type = mglnrel::ptInArea(pt, n, points, segment, Tol(tol), closed);
if (inside) {
*inside = (closed && type == mglnrel::kPtInArea);
}
if (hitType) {
*hitType = type;
}
if (type == mglnrel::kPtAtVertex) {
nearpt = points[segment];
distMin = nearpt.distanceTo(pt);
return distMin;
}
if (type == mglnrel::kPtOnEdge) {
distMin = mglnrel::ptToLine(points[segment], points[(segment+1)%n], pt, nearpt);
return distMin;
}
if (!closed || type != mglnrel::kPtInArea) {
return distMin;
}
for (int i = 0; i + 1 < n2; i++)
{
const Point2d& pt2 = points[(i + 1) % n];
if (closed || rect.isIntersect(Box2d(points[i], pt2)))
{
dist = mglnrel::ptToLine(points[i], pt2, pt, ptTemp);
if (distMin > 1e10f || (dist <= tol && dist < distMin))
{
distMin = dist;
nearpt = ptTemp;
if (dist <= tol)
segment = i;
}
}
}
return distMin;
}
bool showContextActions(int /*selState*/, const int* actions,
const Box2d& selbox, const MgShape*)
{
int n = 0;
for (; actions && actions[n] > 0; n++) {}
if (n > 0 && motion.pressDrag && isContextActionsVisible()) {
return false;
}
mgvector<int> arr(actions, n);
mgvector<float> pos(2 * n);
calcContextButtonPosition(pos, n, selbox);
return CALL_VIEW2(deviceView()->showContextActions(arr, pos,
selbox.xmin, selbox.ymin, selbox.width(), selbox.height()), false);
}
static void _RoundRectHit(
const Box2d& rect, float rx, float ry,
const Point2d& pt, float tol, const Box2d &rectTol,
Point2d* pts, float& distMin,
Point2d& nearpt, int& segment)
{
Point2d ptsBezier[13], ptTemp;
Vector2d vec;
float dx = rect.width() * 0.5f - rx;
float dy = rect.height() * 0.5f - ry;
// 按逆时针方向从第一象限到第四象限连接的四段
mgcurv::ellipseToBezier(ptsBezier, rect.center(), rx, ry);
pts[3] = ptsBezier[0];
for (int i = 0; i < 4; i++)
{
pts[0] = pts[3];
pts[1] = ptsBezier[3 * i];
pts[2] = ptsBezier[3 * i + 1];
pts[3] = ptsBezier[3 * i + 2];
switch (i)
{
case 0: vec.set(dx, dy); break;
case 1: vec.set(-dx, dy); break;
case 2: vec.set(-dx, -dy); break;
case 3: vec.set(dx, -dy); break;
}
for (int j = 0; j < 4; j++)
pts[j] += vec;
if (rectTol.isIntersect(Box2d(4, pts)))
{
mgnear::nearestOnBezier(pt, pts, ptTemp);
float dist = pt.distanceTo(ptTemp);
if (dist <= tol && dist < distMin)
{
distMin = dist;
nearpt = ptTemp;
segment = (5 - i) % 4;
}
}
pts[3] -= vec;
}
}
Box2d GiTransform::setWorldLimits(const Box2d& rect)
{
Box2d ret = m_impl->rectLimitsW;
m_impl->rectLimitsW = rect.isEmpty() ? Box2d(Point2d::kOrigin(), 2e5f, 2e5f) : rect;
m_impl->rectLimitsW.normalize();
return ret;
}
void mgnear::cubicSplinesBox(
Box2d& box, int n, const Point2d* knots,
const Vector2d* knotvs, bool closed, bool hermite)
{
int n2 = (closed && n > 1) ? n + 1 : n;
float d = hermite ? 1.f/3.f : 1.f;
box.empty();
for (int i = 0; i + 1 < n2; i++)
{
box.unionWith(computeCubicBox(knots[i],
knots[i] + knotvs[i] * d,
knots[(i + 1) % n] - knotvs[(i + 1) % n] * d,
knots[(i + 1) % n]));
}
}
bool GiGraphics::drawRoundRect(const GiContext* ctx,
const Box2d& rect, float rx, float ry,
bool modelUnit)
{
if (rect.isEmpty() || isStopping())
return false;
bool ret = false;
if (ry < _MGZERO)
ry = rx;
if (!DRAW_RECT(m_impl, modelUnit).isIntersect(rect)) // 全部在显示区域外
return false;
if (rx < _MGZERO) {
Point2d points[4] = {
rect.leftBottom(), rect.rightBottom(),
rect.rightTop(), rect.leftTop()
};
return drawPolygon(ctx, 4, points);
} else {
Point2d pxs[16];
mgcurv::roundRectToBeziers(pxs, rect, rx, ry);
S2D(xf(), modelUnit).transformPoints(16, pxs);
ret = rawBeginPath();
if (ret) {
rawMoveTo(pxs[0].x, pxs[0].y);
rawBezierTo(pxs[1].x, pxs[1].y, pxs[2].x, pxs[2].y, pxs[3].x, pxs[3].y);
rawLineTo(pxs[4].x, pxs[4].y);
rawBezierTo(pxs[5].x, pxs[5].y, pxs[6].x, pxs[6].y, pxs[7].x, pxs[7].y);
rawLineTo(pxs[8].x, pxs[8].y);
rawBezierTo(pxs[9].x, pxs[9].y, pxs[10].x, pxs[10].y, pxs[11].x, pxs[11].y);
rawLineTo(pxs[12].x, pxs[12].y);
rawBezierTo(pxs[13].x, pxs[13].y, pxs[14].x, pxs[14].y, pxs[15].x, pxs[15].y);
rawClosePath();
ret = rawEndPath(ctx, true);
}
}
return ret;
}
static void AdjustCenterW(Point2d &ptW, float halfw, float halfh,
const Box2d& rectW)
{
if (ptW.x - halfw < rectW.xmin)
ptW.x += rectW.xmin - (ptW.x - halfw);
if (ptW.x + halfw > rectW.xmax)
ptW.x += rectW.xmax - (ptW.x + halfw);
if (2 * halfw >= rectW.width())
ptW.x = rectW.center().x;
if (ptW.y - halfh < rectW.ymin)
ptW.y += rectW.ymin - (ptW.y - halfh);
if (ptW.y + halfh > rectW.ymax)
ptW.y += rectW.ymax - (ptW.y + halfh);
if (2 * halfh >= rectW.height())
ptW.y = rectW.center().y;
}
void mgcurv::roundRectToBeziers(
Point2d points[16], const Box2d& rect, float rx, float ry)
{
if (2 * rx > rect.width())
rx = rect.width() / 2;
if (2 * ry > rect.height())
ry = rect.height() / 2;
int i, j;
float dx = rect.width() / 2 - rx;
float dy = rect.height() / 2 - ry;
mgcurv::ellipseToBezier(points, rect.center(), rx, ry);
for (i = 3; i >= 1; i--)
{
for (j = 3; j >= 0; j--)
points[4 * i + j] = points[3 * i + j];
}
for (i = 0; i < 4; i++)
{
float dx1 = (0 == i || 3 == i) ? dx : -dx;
float dy1 = (0 == i || 1 == i) ? dy : -dy;
for (j = 0; j < 4; j++)
points[4 * i + j].offset(dx1, dy1);
}
}
void SplineGeometry::GetBoundingBox(Box2d& box) const
{
if (!splines.size()) {
Point2d auxp{0.0, 0.0};
box.SetPoint(auxp);
return;
}
std::vector<Point2d> points;
for (size_t i = 0; i < splines.size(); i++) {
splines[i]->GetPoints(20, points);
if (i == 0) box.SetPoint(points[0]);
for (size_t j = 0; j < points.size(); j++) {
box.AddPoint(points[j]);
}
}
}
bool GiCanvasGdipImpl::drawImage(G::Bitmap* pBmp, const Box2d& rectW, bool fast)
{
RECT_2D rc, rcDraw, rcFrom;
Box2d rect;
float width = (float)pBmp->GetWidth();
float height = (float)pBmp->GetHeight();
// rc: 整个图像对应的显示坐标区域
(rectW * gs()->xf().worldToDisplay()).get(rc);
// rcDraw: 图像经剪裁后的可显示部分
gs()->getClipBox(rcDraw);
if (rect.intersectWith(Box2d(rc), Box2d(rcDraw)).isEmpty())
return false;
rect.get(rcDraw);
// rcFrom: rcDraw在原始图像上对应的图像范围
rcFrom.left = (rcDraw.left - rc.left) * width / (rc.right - rc.left);
rcFrom.top = (rcDraw.top - rc.top) * height / (rc.bottom - rc.top);
rcFrom.right = (rcDraw.right - rc.left) * width / (rc.right - rc.left);
rcFrom.bottom = (rcDraw.bottom - rc.top) * height / (rc.bottom - rc.top);
// 根据rectW正负决定是否颠倒显示图像
if (rectW.xmin > rectW.xmax)
mgSwap(rcDraw.left, rcDraw.right);
if (rectW.ymin > rectW.ymax)
mgSwap(rcDraw.top, rcDraw.bottom);
G::InterpolationMode nOldMode = getDrawGs()->GetInterpolationMode();
getDrawGs()->SetInterpolationMode( (!fast || gs()->isPrint())
? G::InterpolationModeBilinear : G::InterpolationModeLowQuality);
G::Status ret = getDrawGs()->DrawImage(pBmp,
G::RectF(rcDraw.left, rcDraw.top,
rcDraw.right - rcDraw.left,
rcDraw.bottom - rcDraw.top),
rcFrom.left, rcFrom.top,
rcFrom.right - rcFrom.left,
rcFrom.bottom - rcFrom.top,
G::UnitPixel);
getDrawGs()->SetInterpolationMode(nOldMode);
return G::Ok == ret;
}
void mgnear::getRectHandle(const Box2d& rect, int index, Point2d& pt)
{
switch (index)
{
case 0: pt = rect.leftTop(); break;
case 1: pt = rect.rightTop(); break;
case 2: pt = rect.rightBottom(); break;
case 3: pt = rect.leftBottom(); break;
case 4: pt = Point2d(rect.center().x, rect.ymax); break;
case 5: pt = Point2d(rect.xmax, rect.center().y); break;
case 6: pt = Point2d(rect.center().x, rect.ymin); break;
case 7: pt = Point2d(rect.xmin, rect.center().y); break;
default: pt = rect.center(); break;
}
}
bool MgArc::_hitTestBox(const Box2d& rect) const
{
if (!getExtent().isIntersect(rect))
return false;
Point2d points[16];
int n = mgcurv::arcToBezier(points, getCenter(), getRadius(), 0, getStartAngle(), getSweepAngle());
return rect.contains(getCenter()) || mgnear::beziersIntersectBox(rect, n, points);
}
GiTransformImpl(bool _ydown)
: cxWnd(1), cyWnd(1), dpiX(96), dpiY(96), ydown(_ydown), viewScale(1)
, zoomEnabled(true), tmpViewScale(1.f), zoomTimes(0)
{
minViewScale = 0.01f; // 最小显示比例为1%
maxViewScale = 5.f; // 最大显示比例为500%
rectLimitsW.set(Point2d::kOrigin(), 2e5f, 2e5f);
updateTransforms();
}