tempo-plotter Changeset - 2e6f48de66b4 · protofusion repositories

Changeset - 2e6f48de66b4

Parent rev.

Child rev.

[Not reviewed]

default

0 2 0

Hasan Yavuz ÖZDERYA - 10 years ago 2015-08-15 15:24:42
hy@ozderya.net

cache bounding rectangle

2 files changed with 25 insertions and 1 deletions:

framebuffer.cpp

framebuffer.h

0 comments (0 inline, 0 general)

framebuffer.cpp

➞

Show inline comments

@@ @@ -24,6 +24,8 @@ FrameBuffer::FrameBuffer(size_t size) @@
     _size = size;
     data = new double[_size]();
     headIndex = 0;
     _boundingRect.setCoords(0, 0, size, 0);
+}
 FrameBuffer::~FrameBuffer()
@@ @@ -60,6 +62,9 @@ void FrameBuffer::resize(size_t size) @@
     data = newData;
     headIndex = 0;
     _size = size;
     // update the bounding rectangle
     _boundingRect.setRight(_size);
+}
 void FrameBuffer::addSamples(double* samples, size_t size)
@@ @@ -107,6 +112,23 @@ void FrameBuffer::addSamples(double* sam @@
+        }
         headIndex = 0;
+    }
     // update bounding rectangle
     double minValue = 0;
     double maxValue = 0;
     for (size_t i = 0; i < _size; i++)
+    {
         if (data[i] > maxValue)
+        {
             maxValue = data[i];
+        }
         else if (data[i] < minValue)
+        {
             minValue = data[i];
+        }
+    }
     _boundingRect.setTop(minValue);
     _boundingRect.setBottom(maxValue);
+}
 void FrameBuffer::clear()
@@ @@ -126,7 +148,7 @@ QPointF FrameBuffer::sample(size_t i) co @@
 QRectF FrameBuffer::boundingRect() const
+{
-    return qwtBoundingRect(*this);
+    return _boundingRect;
+}
 double FrameBuffer::_sample(size_t i) const

framebuffer.h

➞

Show inline comments

@@ @@ -44,6 +44,8 @@ private: @@
     double* data;
     size_t headIndex; // indicates the actual `0` index of the ring buffer
     QRectF _boundingRect;
     double _sample(size_t i) const;
 };

0 comments (0 inline, 0 general)