Plugin analysis: cairo coordinate system fixes
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A090BCE02CF57F04
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@ -482,7 +482,7 @@ PluginEqGui::run_impulse_analysis ()
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}
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void
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PluginEqGui::update_pointer_info( float x)
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PluginEqGui::update_pointer_info (float x)
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{
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/* find the bin corresponding to x (see plot_impulse_amplitude) */
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int i = roundf ((powf (10, _log_max * x / _analysis_width) - 1.0) * _impulse_fft->bins() / _log_coeff);
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@ -599,7 +599,7 @@ PluginEqGui::redraw_analysis_area ()
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cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
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cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
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cairo_set_line_width (cr, 1.0);
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cairo_move_to (cr, _pointer_in_area_freq + .5, +.5);
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cairo_move_to (cr, _pointer_in_area_freq + .5, .5);
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cairo_line_to (cr, _pointer_in_area_freq + .5, _analysis_height + .5);
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cairo_stroke (cr);
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}
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@ -646,6 +646,7 @@ PluginEqGui::draw_scales_phase (Gtk::Widget*, cairo_t *cr)
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cairo_stroke (cr);
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y = _analysis_height / 2.0 + (float)i * (_analysis_height / 8.0) * PHASE_PROPORTION;
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y = roundf (y);
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// label
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snprintf (buf,256, u8"-%d\u00b0", (i * 45));
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@ -654,8 +655,8 @@ PluginEqGui::draw_scales_phase (Gtk::Widget*, cairo_t *cr)
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cairo_move_to (cr, _analysis_width - t_ext.width - t_ext.x_bearing - 2.0, y - extents.descent);
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cairo_show_text (cr, buf);
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y = roundf (y) + .5;
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// line
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y += .5;
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cairo_set_source_rgba (cr, .8, .9, .2, 0.4);
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cairo_move_to (cr, 0.0, y);
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cairo_line_to (cr, _analysis_width, y);
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@ -683,13 +684,14 @@ PluginEqGui::plot_impulse_phase (Gtk::Widget *w, cairo_t *cr)
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// x coordinate of bin i
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x = log10f (1.0 + (float)i / (float)_impulse_fft->bins() * _log_coeff) / _log_max;
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x *= _analysis_width;
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x = roundf (x);
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y = analysis_height_2 - (_impulse_fft->phase_at_bin (i) / M_PI) * analysis_height_2 * PHASE_PROPORTION;
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if (i == 0) {
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cairo_move_to (cr, x, y);
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cairo_move_to (cr, x + .5, y);
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avgY = 0;
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avgNum = 0;
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} else if (rint (x) > prevX || i == _impulse_fft->bins() - 1) {
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} else if (x > prevX || i == _impulse_fft->bins() - 1) {
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avgY = avgY / (float)avgNum;
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if (avgY > (height * 10.0)) {
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avgY = height * 10.0;
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@ -698,13 +700,13 @@ PluginEqGui::plot_impulse_phase (Gtk::Widget *w, cairo_t *cr)
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avgY = -height * 10.0;
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}
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cairo_line_to (cr, prevX, avgY);
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cairo_line_to (cr, prevX + .5, avgY);
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avgY = 0;
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avgNum = 0;
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}
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prevX = rint (x);
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prevX = x;
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avgY += y;
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avgNum++;
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}
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@ -745,6 +747,8 @@ PluginEqGui::draw_scales_power (Gtk::Widget */*w*/, cairo_t *cr)
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snprintf (buf, 256, "%0.0fk", scales[i]/1000.0);
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}
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x = round (x);
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cairo_set_source_rgb (cr, 0.4, 0.4, 0.4);
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cairo_move_to (cr, x - extents.height, 3.0);
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@ -754,23 +758,24 @@ PluginEqGui::draw_scales_power (Gtk::Widget */*w*/, cairo_t *cr)
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cairo_rotate (cr, -M_PI / 2.0);
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cairo_stroke (cr);
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x += .5;
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cairo_set_source_rgb (cr, 0.3, 0.3, 0.3);
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cairo_move_to (cr, x, _analysis_height);
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cairo_line_to (cr, x, 0.0);
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cairo_stroke (cr);
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}
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float y;
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//double dashes[] = { 1.0, 3.0, 4.5, 3.0 };
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double dashes[] = { 3.0, 5.0 };
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for (float dB = 0.0; dB < _max_dB; dB += _step_dB) {
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float y;
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snprintf (buf, 256, "+%0.0f", dB);
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y = (_max_dB - dB) / (_max_dB - _min_dB);
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//std::cerr << " y = " << y << std::endl;
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y *= _analysis_height;
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y = roundf (y);
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if (dB != 0.0) {
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cairo_set_source_rgb (cr, 0.4, 0.4, 0.4);
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@ -779,6 +784,7 @@ PluginEqGui::draw_scales_power (Gtk::Widget */*w*/, cairo_t *cr)
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cairo_stroke (cr);
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}
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y += .5;
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cairo_set_source_rgb (cr, 0.2, 0.2, 0.2);
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cairo_move_to (cr, 0, y);
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cairo_line_to (cr, _analysis_width, y);
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@ -790,16 +796,19 @@ PluginEqGui::draw_scales_power (Gtk::Widget */*w*/, cairo_t *cr)
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}
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for (float dB = - _step_dB; dB > _min_dB; dB -= _step_dB) {
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float y;
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snprintf (buf, 256, "%0.0f", dB);
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y = (_max_dB - dB) / (_max_dB - _min_dB);
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y *= _analysis_height;
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y = roundf (y);
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cairo_set_source_rgb (cr, 0.4, 0.4, 0.4);
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cairo_move_to (cr, 1.0, y - extents.descent - 1.0);
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cairo_show_text (cr, buf);
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cairo_stroke (cr);
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y += .5;
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cairo_set_source_rgb (cr, 0.2, 0.2, 0.2);
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cairo_move_to (cr, 0, y);
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cairo_line_to (cr, _analysis_width, y);
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@ -827,16 +836,17 @@ PluginEqGui::plot_impulse_amplitude (Gtk::Widget *w, cairo_t *cr)
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// x coordinate of bin i
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x = log10f (1.0 + (float)i / (float)_impulse_fft->bins() * _log_coeff) / _log_max;
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x *= _analysis_width;
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x = roundf (x);
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float yCoeff = (power_to_dB (_impulse_fft->power_at_bin (i)) - _min_dB) / (_max_dB - _min_dB);
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y = _analysis_height - _analysis_height * yCoeff;
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if (i == 0) {
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cairo_move_to (cr, x, y);
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cairo_move_to (cr, x + .5, y);
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avgY = 0;
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avgNum = 0;
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} else if (rint (x) > prevX || i == _impulse_fft->bins() - 1) {
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} else if (x > prevX || i == _impulse_fft->bins() - 1) {
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avgY = avgY / (float)avgNum;
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if (avgY > (height * 10.0)) {
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avgY = height * 10.0;
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@ -844,13 +854,13 @@ PluginEqGui::plot_impulse_amplitude (Gtk::Widget *w, cairo_t *cr)
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if (avgY < (-height * 10.0)) {
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avgY = -height * 10.0;
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}
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cairo_line_to (cr, prevX, avgY);
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cairo_line_to (cr, prevX + .5, avgY);
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avgY = 0;
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avgNum = 0;
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}
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prevX = rint (x);
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prevX = x;
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avgY += y;
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avgNum++;
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}
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@ -876,6 +886,7 @@ PluginEqGui::plot_signal_amplitude_difference (Gtk::Widget *w, cairo_t *cr)
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// x coordinate of bin i
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x = log10f (1.0 + (float)i / (float)_signal_input_fft->bins() * _log_coeff) / _log_max;
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x *= _analysis_width;
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x = roundf (x);
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float power_out = _signal_output_fft->power_at_bin (i) + 1e-30;
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float power_in = _signal_input_fft ->power_at_bin (i) + 1e-30;
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@ -906,11 +917,11 @@ PluginEqGui::plot_signal_amplitude_difference (Gtk::Widget *w, cairo_t *cr)
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y = _analysis_height - _analysis_height*yCoeff;
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if (i == 0) {
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cairo_move_to (cr, x, y);
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cairo_move_to (cr, x + .5, y);
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avgY = 0;
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avgNum = 0;
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} else if (rint (x) > prevX || i == _impulse_fft->bins() - 1) {
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} else if (x > prevX || i == _impulse_fft->bins() - 1) {
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avgY = avgY / (float)avgNum;
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if (avgY > (height * 10.0)) {
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avgY = height * 10.0;
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@ -918,14 +929,14 @@ PluginEqGui::plot_signal_amplitude_difference (Gtk::Widget *w, cairo_t *cr)
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if (avgY < (-height * 10.0)) {
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avgY = -height * 10.0;
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}
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cairo_line_to (cr, prevX, avgY);
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cairo_line_to (cr, prevX + .5, avgY);
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avgY = 0;
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avgNum = 0;
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}
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prevX = rint (x);
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prevX = x;
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avgY += y;
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avgNum++;
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}
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