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added fast path to BPicture polygon drawing

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20296 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Marcus Overhagen
2007-03-02 00:33:23 +00:00
parent c8b7e8185a
commit 0690e6bc16
1 changed files with 79 additions and 36 deletions
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src/servers/app/ServerPicture.cpp
+79 -36
View File
@@ -133,6 +133,35 @@ ShapePainter::Draw(ViewLayer *view, BRect frame, bool filled)
}
}
static void
get_polygon_frame(const BPoint *points, int32 numPoints, BRect *_frame)
{
float l, t, r, b;
ASSERT(numPoints > 0);
l = r = points->x;
t = b = points->y;
points++;
numPoints--;
while (numPoints--) {
if (points->x < l)
l = points->x;
if (points->x > r)
r = points->x;
if (points->y < t)
t = points->y;
if (points->y > b)
b = points->y;
points++;
}
_frame->Set(l, t, r, b);
}
static void
nop()
{
@@ -252,58 +281,72 @@ fill_ellipse(ViewLayer *view, BPoint center, BPoint radii)
static void
stroke_polygon(ViewLayer *view, int32 numPoints, const BPoint *viewPoints, bool isClosed)
{
BPoint *points = (BPoint *)malloc(numPoints * sizeof(BPoint));
if (!points)
if (numPoints <= 0) {
return;
} else if (numPoints <= 200) {
// fast path: no malloc/free, also avoid constructor/destructor calls
char data[200 * sizeof(BPoint)];
BPoint *points = (BPoint *)data;
view->ConvertToScreenForDrawing(points, viewPoints, numPoints);
view->ConvertToScreenForDrawing(points, viewPoints, numPoints);
BRect polyFrame = BRect(points[0], points[0]);
BRect polyFrame;
get_polygon_frame(points, numPoints, &polyFrame);
for (int32 i = 1; i < numPoints; i++) {
if (points[i].x < polyFrame.left)
polyFrame.left = points[i].x;
if (points[i].y < polyFrame.top)
polyFrame.top = points[i].y;
if (points[i].x > polyFrame.right)
polyFrame.right = points[i].x;
if (points[i].y > polyFrame.bottom)
polyFrame.bottom = points[i].y;
view->Window()->GetDrawingEngine()->DrawPolygon(points, numPoints, polyFrame,
view->CurrentState(), false,
isClosed && numPoints > 2);
} else {
// avoid constructor/destructor calls by using malloc instead of new []
BPoint *points = (BPoint *)malloc(numPoints * sizeof(BPoint));
if (!points)
return;
view->ConvertToScreenForDrawing(points, viewPoints, numPoints);
BRect polyFrame;
get_polygon_frame(points, numPoints, &polyFrame);
view->Window()->GetDrawingEngine()->DrawPolygon(points, numPoints, polyFrame,
view->CurrentState(), false,
isClosed && numPoints > 2);
free(points);
}
view->Window()->GetDrawingEngine()->DrawPolygon(points, numPoints, polyFrame, view->CurrentState(),
false, isClosed && numPoints > 2);
free(points);
}
static void
fill_polygon(ViewLayer *view, int32 numPoints, const BPoint *viewPoints)
{
BPoint *points = (BPoint *)malloc(numPoints * sizeof(BPoint));
if (!points)
if (numPoints <= 0) {
return;
} else if (numPoints <= 200) {
// fast path: no malloc/free, also avoid constructor/destructor calls
char data[200 * sizeof(BPoint)];
BPoint *points = (BPoint *)data;
view->ConvertToScreenForDrawing(points, viewPoints, numPoints);
view->ConvertToScreenForDrawing(points, viewPoints, numPoints);
BRect polyFrame = BRect(points[0], points[0]);
BRect polyFrame;
get_polygon_frame(points, numPoints, &polyFrame);
for (int32 i = 1; i < numPoints; i++) {
if (points[i].x < polyFrame.left)
polyFrame.left = points[i].x;
if (points[i].y < polyFrame.top)
polyFrame.top = points[i].y;
if (points[i].x > polyFrame.right)
polyFrame.right = points[i].x;
if (points[i].y > polyFrame.bottom)
polyFrame.bottom = points[i].y;
view->Window()->GetDrawingEngine()->DrawPolygon(points, numPoints, polyFrame,
view->CurrentState(), true, true);
} else {
// avoid constructor/destructor calls by using malloc instead of new []
BPoint *points = (BPoint *)malloc(numPoints * sizeof(BPoint));
if (!points)
return;
view->ConvertToScreenForDrawing(points, viewPoints, numPoints);
BRect polyFrame;
get_polygon_frame(points, numPoints, &polyFrame);
view->Window()->GetDrawingEngine()->DrawPolygon(points, numPoints, polyFrame,
view->CurrentState(), true, true);
free(points);
}
view->Window()->GetDrawingEngine()->DrawPolygon(points, numPoints, polyFrame, view->CurrentState(),
true, true);
free(points);
}