* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#define GL_GLEXT_PROTOTYPES
+#include <GL/gl.h>
+#include <GL/glext.h>
+
+#include <math.h>
+
+#include "extdef.h"
+
+#include "logicdata.h"
+#include "logicdatasnapshot.h"
#include "logicsignal.h"
-LogicSignal::LogicSignal(QString name, boost::shared_ptr<SignalData> data,
+using namespace boost;
+using namespace std;
+
+const float Log2 = logf(2.0f);
+
+const float LogicSignal::Margin = 10.0f;
+
+const float LogicSignal::EdgeColour[3] = {0.50f, 0.50f, 0.50f};
+const float LogicSignal::HighColour[3] = {0.00f, 0.75f, 0.00f};
+const float LogicSignal::LowColour[3] = {0.75f, 0.00f, 0.00f};
+
+const QColor LogicSignal::LogicSignalColours[10] = {
+ QColor(0x16, 0x19, 0x1A), // Black
+ QColor(0x8F, 0x52, 0x02), // Brown
+ QColor(0xCC, 0x00, 0x00), // Red
+ QColor(0xF5, 0x79, 0x00), // Orange
+ QColor(0xED, 0xD4, 0x00), // Yellow
+ QColor(0x73, 0xD2, 0x16), // Green
+ QColor(0x34, 0x65, 0xA4), // Blue
+ QColor(0x75, 0x50, 0x7B), // Violet
+ QColor(0x88, 0x8A, 0x85), // Grey
+ QColor(0xEE, 0xEE, 0xEC), // White
+};
+
+LogicSignal::LogicSignal(QString name, shared_ptr<LogicData> data,
int probe_index) :
- Signal(name, data),
+ Signal(name),
+ _data(data),
_probe_index(probe_index)
{
assert(_probe_index >= 0);
}
-void LogicSignal::paint(QGLWidget &widget, const QRect &rect)
+void LogicSignal::paint(QGLWidget &widget, const QRect &rect,
+ double scale, double offset)
+{
+ Point2F *vertex;
+
+ vector< pair<int64_t, bool> > edges;
+
+ assert(scale > 0);
+ assert(_data);
+
+ const float high_offset = rect.top() + Margin;
+ const float low_offset = rect.bottom() - Margin;
+
+ const queue< shared_ptr<LogicDataSnapshot> > &snapshots =
+ _data->get_snapshots();
+ if(snapshots.empty())
+ return;
+
+ const shared_ptr<LogicDataSnapshot> &snapshot = snapshots.front();
+
+ const double pixels_offset = offset / scale;
+ const double samplerate = _data->get_samplerate();
+ const double start_time = _data->get_start_time();
+ const int64_t last_sample = snapshot->get_sample_count() - 1;
+ const double samples_per_pixel = samplerate * scale;
+ const double start = samplerate * (offset - start_time);
+ const double end = start + samples_per_pixel * rect.width();
+ const int64_t quantization_length = 1LL << (int64_t)floorf(
+ max(logf((float)samples_per_pixel) / Log2, 0.0f));
+
+ snapshot->get_subsampled_edges(edges,
+ min(max((int64_t)floor(start), (int64_t)0), last_sample),
+ min(max((int64_t)ceil(end), (int64_t)0), last_sample),
+ quantization_length, _probe_index);
+
+ // Paint the edges
+ const unsigned int edge_point_count = (edges.size() - 2) * 2;
+ Point2F *const edge_points = new Point2F[edge_point_count];
+ vertex = edge_points;
+
+ for(vector<LogicDataSnapshot::EdgePair>::const_iterator i = edges.begin() + 1;
+ i != edges.end() - 1; i++)
+ {
+ const int x = (int)((*i).first / samples_per_pixel - pixels_offset) +
+ rect.left();
+
+ vertex->x = x, vertex->y = high_offset;
+ vertex++;
+ vertex->x = x, vertex->y = low_offset;
+ vertex++;
+ }
+
+ glColor3fv(EdgeColour);
+ paint_lines(edge_points, edge_point_count);
+ delete[] edge_points;
+
+ // Paint the caps
+ const unsigned int max_cap_point_count = (edges.size() - 1) * 2;
+ Point2F *const cap_points = new Point2F[max_cap_point_count];
+
+ glColor3fv(HighColour);
+ paint_caps(cap_points, edges, true, samples_per_pixel,
+ pixels_offset, rect.left(), high_offset);
+ glColor3fv(LowColour);
+ paint_caps(cap_points, edges, false, samples_per_pixel,
+ pixels_offset, rect.left(), low_offset);
+
+ delete[] cap_points;
+}
+
+int LogicSignal::paint_caps(Point2F *const cap_points,
+ vector< pair<int64_t, bool> > &edges, bool level,
+ double samples_per_pixel, double pixels_offset, int x_offset,
+ int y_offset)
+{
+ Point2F *vertex = cap_points;
+
+ for(vector<LogicDataSnapshot::EdgePair>::const_iterator i = edges.begin();
+ i != (edges.end() - 1); i++)
+ if((*i).second == level)
+ {
+ vertex->x = (int)((*i).first / samples_per_pixel -
+ pixels_offset) + x_offset - 1;
+ vertex->y = y_offset;
+ vertex++;
+
+ vertex->x = (int)((*(i+1)).first / samples_per_pixel -
+ pixels_offset) + x_offset;
+ vertex->y = y_offset;
+ vertex++;
+ }
+
+ paint_lines(cap_points, vertex - cap_points);
+}
+
+void LogicSignal::paint_lines(Point2F *points, int count)
+{
+ GLuint vbo_id;
+
+ assert(points);
+
+ glGenBuffers(1, &vbo_id);
+ glBindBuffer(GL_ARRAY_BUFFER, vbo_id);
+
+ const unsigned int vbo_length = count * sizeof(Point2F);
+ glBufferData(GL_ARRAY_BUFFER, vbo_length, NULL, GL_STATIC_DRAW);
+ glBufferSubData(GL_ARRAY_BUFFER, 0, vbo_length, points);
+
+ glBindBuffer(GL_ARRAY_BUFFER, vbo_id);
+
+ glVertexPointer(2, GL_FLOAT, sizeof(Point2F), 0);
+
+ glEnableClientState(GL_VERTEX_ARRAY);
+ glDrawArrays(GL_LINES, 0, count);
+ glDisableClientState(GL_VERTEX_ARRAY);
+
+ glDeleteBuffers(1, &vbo_id);
+}
+
+QColor LogicSignal::get_colour() const
+{
+ return LogicSignalColours[_probe_index % countof(LogicSignalColours)];
+}
+
+int LogicSignal::get_nominal_offset(const QRect &rect) const
{
- glColor3f(1,0,0);
- glBegin(GL_POLYGON);
- glVertex2f(rect.left(), rect.top());
- glVertex2f(rect.right(), rect.top());
- glVertex2f(rect.right(), rect.bottom());
- glEnd();
+ return rect.bottom() - Margin;
}
projects / pulseview.git / blobdiff