Diff: main.cpp

Revision:

0:9a78f27b84a4

Child:

1:27bfb11afcff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Nov 03 05:44:41 2015 +0000
@@ -0,0 +1,158 @@
+//---------------------------------------------------------------
+//  Mandelbrot set generator
+//
+//  Mandelbrot set is displayed using 3 kinds of color pattern.
+//  Tap the Mandelbrot set on the screen, expanded figure by a 
+//  factor of two around the tapped position is displayed.
+//
+//  2015/11/03, Copyright (c) 2015 MIKAMI, Naoki
+//---------------------------------------------------------------
+
+#include "button.hpp"
+#include "mandelbrot.hpp"
+
+using namespace Mikami;
+
+struct PointF
+{
+    PointF() {}
+    PointF(float x0, float y0) : x(x0), y(y0) {}
+    float x, y;
+};
+
+TS_DISCO_F746NG ts_;
+LCD_DISCO_F746NG lcd_;
+
+const int X0_ = 5;      // origin of x axis
+const int Y0_ = 5;      // origin of y axis
+const int NX_ = 321;    // number of pixels for horizon
+const int NY_ = 261;    // number of pixels for vertical
+
+void ReDraw(MandelbrotBase *mandel,
+            float wH, float hH, PointF xy, int level,
+            float &x1, float &x2, float &y1, float &y2)
+{
+    x1 = xy.x - wH;
+    x2 = xy.x + wH;
+    y1 = xy.y - hH;
+    y2 = xy.y + hH;
+
+    char str[16];
+    sprintf(str, "factor:%6d", 1 << level);
+    lcd_.DisplayStringAt(360, 224, (uint8_t *)str, LEFT_MODE);
+    sprintf(str, "x:%8.4f", xy.x);
+    lcd_.DisplayStringAt(360, 240, (uint8_t *)str, LEFT_MODE);
+    sprintf(str, "y:%8.4f", -xy.y);
+    lcd_.DisplayStringAt(360, 256, (uint8_t *)str, LEFT_MODE);
+
+    mandel->Display(x1, x2, y1, y2);
+}
+
+int main()
+{
+    const int LEVEL = 18;
+    PointF xy[LEVEL];   // corresponding to touched position
+    
+    uint32_t backColor = 0xFF006A6C;    // teal green
+
+    // region to be displayed
+    float x1 = -2.3f;
+    float x2 =  0.9f;
+    float y1 = -1.3f;
+    float y2 =  1.3f;
+
+    float wH = (x2 - x1)/2.0f;  // half width of region
+    float hH = (y2 - y1)/2.0f;  // half height of region
+    
+    xy[0] = PointF(x1 + wH, y1 + hH);
+
+    lcd_.Clear(backColor);
+
+    MandelbrotBase *mandel[3];
+    mandel[0] = new MandelbrotBW(lcd_, X0_, Y0_, NX_, NY_);
+    mandel[1] = new MandelbrotColor1(lcd_, X0_, Y0_, NX_, NY_);
+    mandel[2] = new MandelbrotColor2(lcd_, X0_, Y0_, NX_, NY_);
+    
+    Button *buttons[3];
+    char strButton[3][8] = {"B & W", "Color1", "Color2"};
+    for (int n=0; n<3; n++)
+        buttons[n] = new Button(lcd_, ts_, 340, Y0_+45*n, 60, 40,
+                                LCD_COLOR_BLUE, strButton[n], Font12);
+    Button back(lcd_, ts_, 410, Y0_, 60, 40, LCD_COLOR_BLUE, "Back", Font12);
+    back.Draw(0xFFE0E0FF);
+    // area of Mandelbrot set
+    Button area(lcd_, ts_, X0_, Y0_, NX_, NY_, backColor);
+
+    lcd_.SetBackColor(backColor);
+    
+    lcd_.SetFont(&Font20);
+    lcd_.DisplayStringAt(60, 130, (uint8_t *)"Mandelbrot set", LEFT_MODE);
+    
+    int pattern = -1;
+    int level = 0;
+    while (true)
+    {
+        // select color pattern
+        for (int k=0; k<3; k++)
+        {
+            buttons[k]->ReDraw();
+            if (buttons[k]->Touched(LCD_COLOR_DARKBLUE))
+            {
+                mandel[k]->Display(x1, x2, y1, y2);
+                pattern = k;
+
+                lcd_.SetBackColor(backColor);
+                lcd_.SetFont(&Font12);
+                lcd_.DisplayStringAt(360, LINE(15), (uint8_t *)"Tap to zoom.",
+                                     LEFT_MODE);
+            }    
+        }
+        
+        // expand twice around tapped point
+        if (area.Touched() && (pattern != -1))
+        {
+            TS_StateTypeDef state;
+            ts_.GetState(&state);
+
+            uint16_t x = state.touchX[0] - X0_;
+            uint16_t y = state.touchY[0] - Y0_;
+            
+            lcd_.SetBackColor(backColor);
+            if (++level < LEVEL)
+            {
+                xy[level] = PointF(mandel[pattern]->Fx(x), mandel[pattern]->Fy(y));
+                wH = wH/2.0f;
+                hH = hH/2.0f;
+
+                ReDraw(mandel[pattern], wH, hH, xy[level], level, x1, x2, y1, y2);
+            }
+            else
+            {
+                lcd_.SetFont(&Font20);
+                lcd_.DisplayStringAt(X0_+38, 130, (uint8_t *)" No more expand! ",
+                                     LEFT_MODE);
+                level = LEVEL - 1 ;
+            }
+            back.ReDraw();
+        }
+
+        // "back" button tapped
+        if (back.Touched() && level > 0)
+        {            
+            back.Draw(LCD_COLOR_DARKBLUE);
+            lcd_.SetBackColor(backColor);
+            if (level > 0)
+            {
+                level--;
+                wH = wH*2.0f;
+                hH = hH*2.0f;
+
+                ReDraw(mandel[pattern], wH, hH, xy[level], level, x1, x2, y1, y2);
+
+                if (level > 0) back.ReDraw();
+                else           back.Draw(0xFFE0E0FF);
+            }
+        }
+        wait(0.1f);
+    }
+}