From b1092495e9424dfc8a3eb97d0cf92fcc9b8caf5d Mon Sep 17 00:00:00 2001
From: mrfaptastic <12006953+mrfaptastic@users.noreply.github.com>
Date: Fri, 19 Feb 2021 18:20:08 +0000
Subject: [PATCH] Make SimpleTestShapes great again.

Long forgotten about.
---
 .../1_SimpleTestShapes/1_SimpleTestShapes.ino | 127 +++++++++---------
 1 file changed, 65 insertions(+), 62 deletions(-)

diff --git a/examples/1_SimpleTestShapes/1_SimpleTestShapes.ino b/examples/1_SimpleTestShapes/1_SimpleTestShapes.ino
index 80f2236..3e384b5 100644
--- a/examples/1_SimpleTestShapes/1_SimpleTestShapes.ino
+++ b/examples/1_SimpleTestShapes/1_SimpleTestShapes.ino
@@ -20,70 +20,49 @@
  //P3RGB64x32MatrixPanel display;
 
 
-void setup() {
+// Input a value 0 to 255 to get a color value.
+// The colours are a transition r - g - b - back to r.
+// From: https://gist.github.com/davidegironi/3144efdc6d67e5df55438cc3cba613c8
+uint16_t colorWheel(uint8_t pos) {
+  if(pos < 85) {
+    return dma_display.color565(pos * 3, 255 - pos * 3, 0);
+  } else if(pos < 170) {
+    pos -= 85;
+    return dma_display.color565(255 - pos * 3, 0, pos * 3);
+  } else {
+    pos -= 170;
+    return dma_display.color565(0, pos * 3, 255 - pos * 3);
+  }
+}
 
-
-  Serial.begin(115200);
-
-  Serial.println("*****************************************************");
-  Serial.println(" HELLO !");
-  Serial.println("*****************************************************");
-
-  dma_display.begin(); // use default pins
-
-  // draw a pixel in solid white
-  dma_display.drawPixel(0, 0, dma_display.color444(15, 15, 15));
-  delay(500);
-
-  // fix the screen with green
-  dma_display.fillRect(0, 0, dma_display.width(), dma_display.height(), dma_display.color444(0, 15, 0));
-  delay(500);
-
-  // draw a box in yellow
-  dma_display.drawRect(0, 0, dma_display.width(), dma_display.height(), dma_display.color444(15, 15, 0));
-  delay(500);
-
-  // draw an 'X' in red
-  dma_display.drawLine(0, 0, dma_display.width()-1, dma_display.height()-1, dma_display.color444(15, 0, 0));
-  dma_display.drawLine(dma_display.width()-1, 0, 0, dma_display.height()-1, dma_display.color444(15, 0, 0));
-  delay(500);
-
-  // draw a blue circle
-  dma_display.drawCircle(10, 10, 10, dma_display.color444(0, 0, 15));
-  delay(500);
-
-  // fill a violet circle
-  dma_display.fillCircle(40, 21, 10, dma_display.color444(15, 0, 15));
-  delay(500);
-
-  // fill the screen with 'black'
-  dma_display.fillScreen(dma_display.color444(0, 0, 0));
-
-
-  // draw some text!
+void drawText(int colorWheelOffset)
+{
+  
+  // draw text with a rotating colour
   dma_display.setTextSize(1);     // size 1 == 8 pixels high
   dma_display.setTextWrap(false); // Don't wrap at end of line - will do ourselves
 
   dma_display.setCursor(5, 0);    // start at top left, with 8 pixel of spacing
   uint8_t w = 0;
-  char *str = "ESP32 DMA";
-  for (w=0; w<9; w++) {
-    dma_display.setTextColor(dma_display.color565(255, 0, 255));
+  const char *str = "ESP32 DMA";
+  for (w=0; w<strlen(str); w++) {
+    dma_display.setTextColor(colorWheel((w*32)+colorWheelOffset));
     dma_display.print(str[w]);
   }
 
   dma_display.println();
+  dma_display.print(" ");
   for (w=9; w<18; w++) {
-    dma_display.setTextColor(Wheel(w));
-    dma_display.print(str[w]);
+    dma_display.setTextColor(colorWheel((w*32)+colorWheelOffset));
+    dma_display.print("*");
   }
+  
   dma_display.println();
-  //dma_display.setTextColor(dma_display.Color333(4,4,4));
-  //dma_display.println("Industries");
+
   dma_display.setTextColor(dma_display.color444(15,15,15));
   dma_display.println("LED MATRIX!");
 
-  // print each letter with a rainbow color
+  // print each letter with a fixed rainbow color
   dma_display.setTextColor(dma_display.color444(0,8,15));
   dma_display.print('3');
   dma_display.setTextColor(dma_display.color444(15,4,0));
@@ -110,21 +89,45 @@ void setup() {
 
 }
 
+
+void setup() {
+  
+  dma_display.begin(); // use default pins  
+
+  // fix the screen with green
+  dma_display.fillRect(0, 0, dma_display.width(), dma_display.height(), dma_display.color444(0, 15, 0));
+  delay(500);
+
+  // draw a box in yellow
+  dma_display.drawRect(0, 0, dma_display.width(), dma_display.height(), dma_display.color444(15, 15, 0));
+  delay(500);
+
+  // draw an 'X' in red
+  dma_display.drawLine(0, 0, dma_display.width()-1, dma_display.height()-1, dma_display.color444(15, 0, 0));
+  dma_display.drawLine(dma_display.width()-1, 0, 0, dma_display.height()-1, dma_display.color444(15, 0, 0));
+  delay(500);
+
+  // draw a blue circle
+  dma_display.drawCircle(10, 10, 10, dma_display.color444(0, 0, 15));
+  delay(500);
+
+  // fill a violet circle
+  dma_display.fillCircle(40, 21, 10, dma_display.color444(15, 0, 15));
+  delay(500);
+
+  // fill the screen with 'black'
+  dma_display.fillScreen(dma_display.color444(0, 0, 0));
+
+  drawText(0);
+
+}
+
+uint8_t wheelval = 0;
 void loop() {
-  // do nothing
-}
 
+    // animate by going through the colour wheel for the first two lines
+    drawText(wheelval);
+    wheelval +=1;
 
-// Input a value 0 to 24 to get a color value.
-// The colours are a transition r - g - b - back to r.
-uint16_t Wheel(byte WheelPos) {
-  if(WheelPos < 8) {
-   return dma_display.color444(15 - WheelPos*2, WheelPos*2, 0);
-  } else if(WheelPos < 16) {
-   WheelPos -= 8;
-   return dma_display.color444(0, 15-WheelPos*2, WheelPos*2);
-  } else {
-   WheelPos -= 16;
-   return dma_display.color444(0, WheelPos*2, 7 - WheelPos*2);
-  }
+    delay(20); 
 }