Diff: MyGraphicEqualizer/GrEqDesignerDrawer.cpp

Revision:

15:ef0acc9fe111

Child:

20:5c69e664e17c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MyGraphicEqualizer/GrEqDesignerDrawer.cpp	Mon Aug 15 06:37:47 2016 +0000
@@ -0,0 +1,62 @@
+//------------------------------------------------------------------------------
+//  イコライザ用フィルタのパラメータを設定し，その周波数特性を描画するためのクラス
+//  
+//  2016/08/15, Copyright (c) 2016 MIKAMI, Naoki
+//------------------------------------------------------------------------------
+
+#include "GrEqDesignerDrawer.hpp"
+
+namespace Mikami
+{
+    // Constructor
+    GrEqDesignerDrawer::GrEqDesignerDrawer(uint16_t x0, uint16_t y0,
+                                   int bands, float f0, int fs, float db1)
+        : lcd_(GuiBase::GetLcdPtr()), ts_(GuiBase::GetTsPtr()),
+          X0_(x0), Y0_(y0), BANDS_(bands), Q_VAL_(1.0f/sqrtf(2.0f)),
+          f0_(bands), ck_(bands),
+          calculator_(bands, fs), frqResp_(bands),
+          drawerObj_(x0, 50.0f, 20000.0f, 128, y0, -18, 18, db1, 6, fs)
+    {
+        for (int n=0; n<bands; n++) f0_[n] = f0*powf(2, n);
+
+        for (int n=0; n<bands; n++)
+            ck_[n] = calculator_.Execute(n, f0_[n], 0, Q_VAL_);
+        frqResp_.SetParams(ck_);
+    }
+
+    // 周波数特性の描画
+    void GrEqDesignerDrawer::DrawResponse()
+    {
+        drawerObj_.DrawAxis();              // 目盛線の描画        
+        FrqRespDrawer::AxisX_Char numX[] =  // 横軸の目盛値を描画する際に使う構造体の配列
+            {{   50,  "50"}, {  100, "100"}, {  200, "200"}, {  500, "500"}, { 1000, "1k"},
+             { 2000,  "2k"}, { 5000,  "5k"}, {10000, "10k"}, {20000, "20k"}};
+
+        drawerObj_.DrawNumericX(numX, 9, 6, "Frequency [Hz]");  // 横軸の目盛
+        drawerObj_.DrawNumericY(-24, -6, 6, "%3d");             // 縦軸の目盛値は 6 dB 間隔
+        drawerObj_.DrawGraph(frqResp_);     // 周波数特性のカーブの描画
+    }
+    
+    // 周波数特性の平坦化と描画
+    void GrEqDesignerDrawer::DrawFlat()
+    {
+        for (int n=0; n<BANDS_; n++)
+            ck_[n] = calculator_.Execute(n, f0_[n], 0, Q_VAL_);
+        frqResp_.SetParams(ck_);
+
+        drawerObj_.Erase();
+        drawerObj_.DrawAxis();              // 目盛線の描画
+        drawerObj_.DrawGraph(frqResp_);     // 周波数特性のグラフのカーブを描画する
+    }
+
+    // 特定のバンドのイコライザ用フィルタのパラメータの設定と周波数特性の再描画
+    void GrEqDesignerDrawer::DesignAndRedraw(float gainDb, int n)
+    {
+        ck_[n] = calculator_.Execute(n, f0_[n],  gainDb, Q_VAL_);
+        frqResp_.SetParam(ck_[n], n);
+
+        drawerObj_.Erase();
+        drawerObj_.DrawAxis();              // 目盛線の描画
+        drawerObj_.DrawGraph(frqResp_);     // 周波数特性のグラフのカーブを描画する
+    }
+}