Diff: z_example/9_Mandelbrot.cpp

Revision:

3:35ac9ee7d2d6

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/z_example/9_Mandelbrot.cpp	Wed Aug 07 05:39:01 2019 +0000
@@ -0,0 +1,173 @@
+//---------------------------------------------------------------
+//  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.
+//
+//  2016/02/22, Copyright (c) 2016 MIKAMI, Naoki
+//---------------------------------------------------------------
+// Modified by JH1PJL/K.Arai April 26th,2018 for DISCO-F469NI
+// Modified by JH1PJL/K.Arai July  25th,2019 for DISCO-F769NI
+
+#include "select_program.h"
+//#define EXAMPLE_9_MANDEL
+#ifdef EXAMPLE_9_MANDEL
+
+#include "button_group.hpp"
+#include "mandelbrot.hpp"
+
+using namespace Mikami;
+
+struct PointF
+{
+    PointF() {}
+    PointF(float x0, float y0) : x(x0), y(y0) {}
+    float x, y;
+};
+
+TS_DISCO_F769NI ts_;
+LCD_DISCO_F769NI lcd_;
+Serial pc(USBTX, USBRX, 115200);
+
+const int X0_ = 0;      // origin of x axis
+const int Y0_ = 0;      // origin of y axis
+
+const int NX_ = 670;    // number of pixels for horizon
+const int NY_ = 542;    // 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];
+    lcd_.SetTextColor(LCD_COLOR_WHITE);
+    lcd_.DisplayStringAt(520, 424, (uint8_t *)str, LEFT_MODE);
+    sprintf(str, "x:%7.3f", xy.x);
+    lcd_.DisplayStringAt(520, 440, (uint8_t *)str, LEFT_MODE);
+    sprintf(str, "y:%7.3f", -xy.y);
+    lcd_.DisplayStringAt(520, 456, (uint8_t *)str, LEFT_MODE);
+    mandel->Display(x1, x2, y1, y2);
+}
+
+int main()
+{
+    pc.printf("\x1b[2J\x1b[H %s\r\n %s %s (UTC)\r\n",
+              __FILE__, __DATE__, __TIME__);
+    pc.printf("Start Mandelbrot picture\r\n");
+    const int LEVEL = 18;
+    PointF xy[LEVEL];   // corresponding to touched position
+    
+    uint32_t backColor = 0xFF006A6C;            // teal green
+    uint32_t inActive = backColor & 0xE0FFFFFF; // color for inactive button
+
+    // 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_- 60);
+    mandel[1] = new MandelbrotColor1(lcd_, X0_, Y0_, NX_, NY_- 60);
+    mandel[2] = new MandelbrotColor2(lcd_, X0_, Y0_, NX_, NY_- 60);
+    
+    const string strButton[3] = {"B & W", "Color1", "Color2"};
+    ButtonGroup bGroup(lcd_, ts_, 680, Y0_, 120, 80,
+                       LCD_COLOR_BLUE, backColor,
+                       3, strButton, 0, 5, 1, Font24);
+    Button back(lcd_, ts_, 680, 390+Y0_, 120, 80,
+                LCD_COLOR_BLUE, backColor, "Back", Font24);
+    back.Draw(inActive, LCD_COLOR_GRAY);
+    
+
+    // area of Mandelbrot set
+    Button area(lcd_, ts_, X0_, Y0_, NX_, NY_, backColor, backColor);
+
+    lcd_.SetTextColor(LCD_COLOR_WHITE);
+    lcd_.SetFont(&Font24);
+    lcd_.DisplayStringAt(280, 460, (uint8_t *)"Mandelbrot set", LEFT_MODE);
+    
+    int pattern = -1;
+    int level = 0;
+    bool first = true;
+    while (true){
+        int num = -1;
+        // select color pattern and display
+        if (bGroup.GetTouchedNumber(num) && (pattern != num)){
+            bGroup.Draw(num, LCD_COLOR_DARKBLUE);
+            mandel[num]->Display(x1, x2, y1, y2);
+            pattern = num;
+            bGroup.Redraw(num);
+
+            if (first){
+                lcd_.SetBackColor(backColor);
+                lcd_.SetFont(&Font20);
+                lcd_.DisplayStringAt(680, LINE(16), (uint8_t *)"Tap to",
+                                     LEFT_MODE);
+                lcd_.DisplayStringAt(680, LINE(17), (uint8_t *)"Zoom in.",
+                                     LEFT_MODE);
+                first = false;            
+            }
+        }
+        
+        // expand twice around tapped point
+        if (area.Touched() && (pattern != -1)){
+            TS_StateTypeDef state = Button::GottenState();
+
+            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(&Font24);
+                lcd_.DisplayStringAt(X0_+76, 260,
+                                    (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(inActive, LCD_COLOR_GRAY);
+                }
+            }
+        }
+        wait(0.1f);
+    }
+}
+#endif