/*
立方体(Cube)が回転するデモ
*/
#include "SPI.h"
#include <Adafruit_GFX_AS.h> //
Core graphics library, with extra fonts.
#include <Adafruit_ILI9341_STM.h> // STM32 DMA
Hardware-specific library
// For the Adafruit shield, these are the default.
#define
TFT_CS
PB4
#define
TFT_DC
PA15
#define TFT_RST
PB3
Adafruit_ILI9341_STM tft = Adafruit_ILI9341_STM(TFT_CS,
TFT_DC, TFT_RST); // Use hardware SPI
const float sin_d[] = {
0, 0.17, 0.34, 0.5, 0.64, 0.77, 0.87, 0.94, 0.98,
1, 0.98, 0.94,
0.87, 0.77, 0.64, 0.5, 0.34, 0.17, 0, -0.17, -0.34,
-0.5, -0.64,
-0.77, -0.87, -0.94, -0.98, -1, -0.98, -0.94,
-0.87, -0.77,
-0.64, -0.5, -0.34, -0.17
};
const float cos_d[] = {
1, 0.98, 0.94, 0.87, 0.77, 0.64, 0.5, 0.34, 0.17,
0, -0.17, -0.34,
-0.5, -0.64, -0.77, -0.87, -0.94, -0.98, -1, -0.98,
-0.94, -0.87,
-0.77, -0.64, -0.5, -0.34, -0.17, 0, 0.17, 0.34,
0.5, 0.64, 0.77,
0.87, 0.94, 0.98
};
const float d = 5;
float cube1_px[] = {
-d, d, d, -d, -d, d, d, -d
};
float cube1_py[] = {
-d, -d, d, d, -d, -d, d, d
};
float cube1_pz[] = {
-d, -d, -d, -d, d, d, d, d
};
float cube1_p2x[] = {
0, 0, 0, 0, 0, 0, 0, 0
};
float cube1_p2y[] = {
0, 0, 0, 0, 0, 0, 0, 0
};
int cube1_r[] = {
0, 0, 0
};
const float d2 = 10;
float cube2_px[] = {
-d2, d2, d2, -d2, -d2, d2,
d2, -d2
};
float cube2_py[] = {
-d2, -d2, d2, d2, -d2, -d2,
d2, d2
};
float cube2_pz[] = {
-d2, -d2, -d2, -d2, d2, d2,
d2, d2
};
float cube2_p2x[] = {
0, 0, 0, 0, 0, 0, 0, 0
};
float cube2_p2y[] = {
0, 0, 0, 0, 0, 0, 0, 0
};
int cube2_r[] = {
0, 0, 0
};
uint16 cube1_x, cube1_y, cube2_x, cube2_y, cube1_color,
cube2_color;
void cube(float *px, float *py, float *pz, float *p2x,
float *p2y, int *r, uint16 *x, uint16 *y, uint16 *color) {
for (int i = 0; i < 3; i++) {
tft.drawLine(p2x[i], p2y[i], p2x[i +
1], p2y[i + 1], ILI9341_WHITE);
tft.drawLine(p2x[i + 4], p2y[i + 4],
p2x[i + 5], p2y[i + 5], ILI9341_WHITE);
tft.drawLine(p2x[i], p2y[i], p2x[i +
4], p2y[i + 4], ILI9341_WHITE);
}
tft.drawLine(p2x[3], p2y[3], p2x[0], p2y[0],
ILI9341_WHITE);
tft.drawLine(p2x[7], p2y[7], p2x[4], p2y[4],
ILI9341_WHITE);
tft.drawLine(p2x[3], p2y[3], p2x[7], p2y[7],
ILI9341_WHITE);
r[0] = r[0] + 1;
r[1] = r[1] + 1;
if (r[0] == 36) r[0] = 0;
if (r[1] == 36) r[1] = 0;
if (r[2] == 36) r[2] = 0;
for (int i = 0; i < 8; i++)
{
float px2 = px[i];
float py2 = cos_d[r[0]] * py[i] -
sin_d[r[0]] * pz[i];
float pz2 = sin_d[r[0]] * py[i] +
cos_d[r[0]] * pz[i];
float px3 = cos_d[r[1]] * px2 +
sin_d[r[1]] * pz2;
float py3 = py2;
float pz3 = -sin_d[r[1]] * px2 +
cos_d[r[1]] * pz2;
float ax = cos_d[r[2]] * px3 -
sin_d[r[2]] * py3;
float ay = sin_d[r[2]] * px3 +
cos_d[r[2]] * py3;
float az = pz3 - 190;
p2x[i] = *x + ax * 500 / az;
p2y[i] = *y + ay * 500 / az;
}
for (int i = 0; i < 3; i++) {
tft.drawLine(p2x[i], p2y[i], p2x[i +
1], p2y[i + 1], *color);
tft.drawLine(p2x[i + 4], p2y[i + 4],
p2x[i + 5], p2y[i + 5], *color);
tft.drawLine(p2x[i], p2y[i], p2x[i +
4], p2y[i + 4], *color);
}
tft.drawLine(p2x[3], p2y[3], p2x[0], p2y[0],
*color);
tft.drawLine(p2x[7], p2y[7], p2x[4], p2y[4],
*color);
tft.drawLine(p2x[3], p2y[3], p2x[7], p2y[7],
*color);
}
void setup() {
delay (1000);
Serial.begin(9600);
tft.begin();
tft.fillScreen(ILI9341_WHITE);
cube1_x = ((tft.width()) / 4);
cube1_y = ((tft.height()) / 4);
cube2_x = ((tft.width()) / 2);
cube2_y = ((tft.height()) / 2);
cube1_color = ILI9341_BLACK;
cube2_color = ILI9341_RED;
uint16 x = 0;
for (uint32_t n = 247583650 ; n > 247400000 ;
n--) {
x = sqrt (n);
cube(cube1_px, cube1_py, cube1_pz,
cube1_p2x, cube1_p2y, cube1_r, &cube1_x, &cube1_y,
&cube1_color);
cube(cube2_px, cube2_py, cube2_pz,
cube2_p2x, cube2_p2y, cube2_r, &cube2_x, &cube2_y,
&cube2_color);
}
}
void loop() {
}
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