Bayley Wang
cube
Fork of
manworm_tv_gpu
by 
Jared DiCarlo
Diff: main.cpp
- Revision:
- 0:7757ab3f7206
- Child:
- 1:24fd07a24094
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Sat Nov 18 04:18:42 2017 +0000
@@ -0,0 +1,422 @@
+#include "mbed.h"
+#define V_RES 220
+#define H_RES 100
+#include <math.h>
+#define X_MIN 24
+#define X_MAX (76+18)
+#define Y_MIN 7
+#define Y_MAX (V_RES/4 - 15)
+
+#define Y_0 ( (Y_MIN + Y_MAX)/2 )
+#define X_0 ( (X_MIN + X_MAX)/2 )
+#define SIDE 8
+#define HSIDE 8
+#define SIN_V (0.03)
+#define COS_V (0.99955f)
+#define BX_0 30
+#define BY_0 (V_RES/4 - 15)
+#define BX 42
+#define BY 15
+#define DEMO_LENGTH 600
+
+
+DigitalOut sout(D8); //sync
+DigitalOut vout(D7); //video
+Ticker t;
+uint8_t draw_line_inv = 0;
+//9x42
+uint8_t miters[] = {
+1,1,1,1,1,1,1,1,1,1,0,0,1,1,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,0,0,1,1,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,0,0,1,1,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+1,1,0,0,1,1,0,0,1,1,0,0,0,0,0,0,1,1,0,0,0,1,1,1,1,1,0,0,1,1,0,0,0,0,0,0,1,1,1,1,1,1,
+1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,0,1,0,0,1,1,1,1,1,1,0,0,1,1,1,1,1,1,
+1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,1,1,1,0,0,0,1,1,1,0,0,0,0,0,0,1,1,0,0,0,
+1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,1,1,0,0,
+1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,1,1,1,1,0,0,1,1,1,0,0,0,0,0,1,1,1,1,1,1,
+1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,1,1,1,1,0,0,1,1,1,0,0,0,0,0,1,1,1,1,1,1,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,1,1,0,1,0,1,0,1,1,0,0,1,0,0,0,0,0,1,0,0,0,1,0,0,0,1,0,1,1,0,0,0,0,0,0,
+1,1,1,1,1,0,1,0,0,1,1,0,1,1,0,0,1,0,1,1,0,0,0,1,1,0,1,1,0,1,1,0,1,1,0,0,0,1,1,1,1,1,
+1,0,1,0,1,0,1,0,0,1,1,0,1,0,0,0,1,0,0,1,0,1,0,1,0,0,1,0,0,0,1,0,1,0,0,0,0,1,0,1,0,1,
+1,0,1,0,1,0,1,0,0,1,1,0,1,0,0,0,1,0,0,1,0,1,0,1,0,0,1,1,0,1,1,0,1,0,0,0,0,1,0,1,0,1,
+1,0,1,0,1,0,0,1,1,0,1,0,1,0,0,0,1,0,0,0,1,1,1,0,0,0,0,0,1,0,0,0,1,0,0,0,0,1,0,1,0,1,
+
+};
+
+uint8_t tv[] = {
+0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,1,0,1,0,0,1,0,1,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,1,0,1,0,0,1,0,1,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,0,0,0,0,0,0,1,0,1,0,0,1,0,1,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,1,0,1,0,0,1,0,1,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,0,1,0,0,1,0,1,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,1,0,1,1,1,1,1,0,1,0,0,0,1,0,1,0,1,0,1,0,0,1,0,1,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,1,0,1,0,1,0,1,0,0,1,0,1,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,1,0,1,0,1,0,1,0,0,1,0,1,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,1,0,0,0,1,0,0,0,0,1,0,1,0,0,1,0,0,1,0,0,0,0,1,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,1,0,0,0,1,0,0,0,0,0,1,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,1,1,0,0,1,1,1,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,1,1,1,0,0,1,1,1,0,0,0,0,0,0,0,0};
+
+
+
+uint16_t l=0; //current line of scan
+
+uint8_t im_line_s[H_RES]; //image sync buffer
+
+uint8_t bl_line_s[H_RES]; //lower 1/4 of screen sync buffer
+uint8_t bl_line_v[H_RES]; //lower 1/4 of screen video buffer
+uint8_t vb_line_s[H_RES]; //vertical sync, sync buffer
+uint8_t vb_line_v[H_RES]; //vertical sync, video buffer
+
+float cube_a[3] = {15.f, 0.f, 0.f};
+
+
+float cube_pts[8][3] = { {SIDE,SIDE,HSIDE},
+ {-SIDE,SIDE,HSIDE},
+ {-SIDE,-SIDE,HSIDE},
+ {SIDE,-SIDE,HSIDE},
+ {SIDE,-SIDE,-HSIDE},
+ {-SIDE,-SIDE,-HSIDE},
+ {-SIDE,SIDE,-HSIDE},
+ {SIDE,SIDE,-HSIDE} };
+
+float x_rot[3][3] = { {1.f, 0.f, 0.f},
+ {0.f, COS_V, -SIN_V},
+ {0.f, SIN_V, COS_V} };
+
+float y_rot[3][3] = { {COS_V, 0.f, SIN_V},
+ {0.f, 1.f, 0.f},
+ {-SIN_V, 0, COS_V} };
+
+float z_rot[3][3] = { {COS_V, -SIN_V, 0.f},
+ {SIN_V, COS_V, 0.f},
+ {0.f, 0.f, 1.f} };
+
+
+uint8_t im_line_va[H_RES*V_RES]; //image buffer
+
+void make_checkerboard()
+{
+ for(int i = 0; i < H_RES; i++)
+ for(int j = 0; j < V_RES; j++)
+ im_line_va[i+j*H_RES] = ((i > 20) && (i < 98)) && ((j%2) ^ (i%2)); //checkerboard
+
+}
+
+void init_buffers()
+{
+ make_checkerboard();
+ for(int i = 0; i < H_RES; i++)
+ {
+ im_line_s[i] = 1;
+ bl_line_s[i] = 1;
+ bl_line_v[i] = 0;
+ vb_line_s[i] = 0;
+ vb_line_v[i] = 0;
+ }
+ im_line_s[0] = 0;
+ im_line_s[1] = 0;
+ im_line_s[2] = 0;
+ bl_line_s[0] = 0;
+ vb_line_s[0] = 1;
+ bl_line_s[1] = 0;
+ vb_line_s[1] = 1;
+
+
+
+}
+void isr()
+{
+ uint8_t nop = 0; //use nops or use wait_us
+ uint8_t* sptr; //pointer to sync buffer for line
+ uint8_t* vptr; //pointer to video buffer for line
+ if(l < V_RES){ vptr = im_line_va + ((l/4)*H_RES); sptr = im_line_s; nop = 1; } //pick line buffers
+ else if(l < 254){ vptr = bl_line_v; sptr = bl_line_s; nop = 0; }
+ else{ vptr = vb_line_v; sptr = vb_line_s; nop = 1;}
+ uint8_t lmax = nop?H_RES:12; //number of columns
+ for(uint8_t i = 0; i < lmax; i++) //loop over each column
+ {
+ vout = vptr[i]; //set output pins
+ sout = sptr[i];
+ if(nop) //nop delay
+ {
+ asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");//asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");
+ }
+ else {wait_us(1); if(i > 2) i++;} //wait delay
+
+
+ }
+ //move to next line
+ l++;
+ if(l > 255) l = 0;
+}
+
+//coordinates for bouncing ball
+
+
+
+int k = 0;
+uint16_t px = X_0*10;
+uint16_t py = Y_0*10;
+uint16_t vx = 10;
+uint16_t vy = 10;
+uint16_t px2 = X_0*10 + 80;
+uint16_t py2 = Y_0*10 - 40;
+uint16_t vx2 = 3;
+uint16_t vy2 = -4;
+
+int16_t sign(int16_t a)
+{
+ if(a > 0) return 1;
+ if(a < 0) return -1;
+ return 0;
+}
+
+void draw_vert(int16_t y0, int16_t y1, int16_t x0)
+{
+ for(int16_t i = y0; i < y1; i++)
+ im_line_va[H_RES*i + x0] = 1;
+}
+
+void draw_horiz(int16_t x0, int16_t x1, int16_t y0)
+{
+ for(int16_t i = x0; i < x1; i++)
+ im_line_va[H_RES*y0 + i] = 1;
+}
+
+int16_t imin(int16_t a, int16_t b)
+{
+ if(a<b) return a;
+ return b;
+}
+
+int16_t imax(int16_t a, int16_t b)
+{
+ if(a>b) return a;
+ return b;
+}
+
+void draw_line(int16_t x0, int16_t y0, int16_t x1, int16_t y1)
+{
+ if(x0 > x1){ x0 = x0 ^ x1; x1 = x1^x0; x0 = x0^x1;y0 = y0 ^ y1; y1 = y1^y0; y0 = y0^y1; }
+ if(x0 == x1){draw_vert(y0,y1,x0);}
+ if(y0 == y1){draw_horiz(x0,x1,y0);}
+ int16_t dx = x1 - x0;
+ int16_t dy = y1 - y0;
+ float derr = fabs((float)(dy)/(float)(dx));
+ float err = 0.f;
+ int16_t y = y0;
+ for(int16_t x = x0; x < x1; x++)
+ {
+ //plotxy
+ im_line_va[H_RES*y + x] = !draw_line_inv;
+ err += derr;
+ while(err >= 0.5f)
+ {
+ y += sign(dy);
+ im_line_va[H_RES*y + x] = !draw_line_inv;
+ err -= 1.f;
+ }
+ }
+}
+
+void draw_cube(float cp[][3])
+{
+ for(uint8_t i = 0; i < 7; i++)
+ {
+ draw_line((int16_t)cp[i][0]+cube_a[0]+X_0,(int16_t)cp[i][1]+cube_a[1]+Y_0,(int16_t)cp[i+1][0]+cube_a[0]+X_0,(int16_t)cp[i+1][1]+cube_a[1]+Y_0);
+ }
+ draw_line((int16_t)cp[0][0]+cube_a[0]+X_0,(int16_t)cp[0][1]+cube_a[1]+Y_0,(int16_t)cp[3][0]+cube_a[0]+X_0,(int16_t)cp[3][1]+cube_a[1]+Y_0);
+ draw_line((int16_t)cp[4][0]+cube_a[0]+X_0,(int16_t)cp[4][1]+cube_a[1]+Y_0,(int16_t)cp[7][0]+cube_a[0]+X_0,(int16_t)cp[7][1]+cube_a[1]+Y_0);
+ draw_line((int16_t)cp[0][0]+cube_a[0]+X_0,(int16_t)cp[0][1]+cube_a[1]+Y_0,(int16_t)cp[7][0]+cube_a[0]+X_0,(int16_t)cp[7][1]+cube_a[1]+Y_0);
+ draw_line((int16_t)cp[1][0]+cube_a[0]+X_0,(int16_t)cp[1][1]+cube_a[1]+Y_0,(int16_t)cp[6][0]+cube_a[0]+X_0,(int16_t)cp[6][1]+cube_a[1]+Y_0);
+ draw_line((int16_t)cp[2][0]+cube_a[0]+X_0,(int16_t)cp[2][1]+cube_a[1]+Y_0,(int16_t)cp[5][0]+cube_a[0]+X_0,(int16_t)cp[5][1]+cube_a[1]+Y_0);
+}
+
+void apply_rot(float cp[][3], float r[][3])
+{
+ for(uint8_t pti = 0; pti < 8; pti++)
+ {
+ float* cpt = cp[pti];
+ float xn = r[0][0] * cpt[0] + r[0][1] * cpt[1] + r[0][2] * cpt[2];
+ float yn = r[1][0] * cpt[0] + r[1][1] * cpt[1] + r[1][2] * cpt[2];
+ float zn = r[2][0] * cpt[0] + r[2][1] * cpt[1] + r[2][2] * cpt[2];
+ cpt[0] = xn;
+ cpt[1] = yn;
+ cpt[2] = zn;
+ }
+}
+
+void apply_xf_rot(float cpt[], float r[][3])
+{
+ float xn = r[0][0] * cpt[0] + r[0][1] * cpt[1] + r[0][2] * cpt[2];
+ float yn = r[1][0] * cpt[0] + r[1][1] * cpt[1] + r[1][2] * cpt[2];
+ float zn = r[2][0] * cpt[0] + r[2][1] * cpt[1] + r[2][2] * cpt[2];
+ cpt[0] = xn;
+ cpt[1] = yn;
+ cpt[2] = zn;
+}
+
+void draw_v_check(int8_t r,uint8_t tt)
+{
+ for(int i = 0; i < H_RES; i++)
+ for(int j = 0; j < V_RES; j++)
+ im_line_va[i+j*H_RES] = (((i > 20) && (i < 98)) && ( tt ^(((j%(r*2))>=r) ^ ((i%(r*2)))>=r))); //checkerboard
+}
+
+
+int jjj = 0;
+int f_count = DEMO_LENGTH + 10;
+void draw_cube_spin(int kkkk);
+//update bouncing balls
+
+void draw_blank()
+{
+ for(uint16_t h = X_MIN; h < X_MAX; h++)
+ {
+ for(uint16_t v = Y_MIN; v < Y_MAX+15; v++)
+ {
+ im_line_va[v*H_RES + h] = 0;
+ }
+ }
+}
+
+void wipe();
+
+void update_image()
+{
+ //delay
+ k++;
+ if(k%4000) return;
+ f_count++;
+ if(f_count < DEMO_LENGTH/2)
+ {
+ draw_cube_spin(0);
+ }
+ else if(f_count < DEMO_LENGTH)
+ {
+ draw_cube_spin(1);
+ }
+ else if(f_count < DEMO_LENGTH * 2)
+ {
+ for(int k = 1; k < 10; k++)
+ for(int kk = 1; kk < 3; kk++)
+ {
+ draw_v_check(k,1);
+ draw_v_check(k,1);
+ draw_v_check(k,0);
+ draw_v_check(k,0);
+ }
+
+ draw_v_check(1,0);
+ wipe();
+ f_count = 0;
+ }
+}
+
+void wipe()
+{
+ for(int v = Y_MIN; v < Y_MAX+15; v++)
+ {
+ for(uint16_t h = X_MIN; h < X_MAX; h++)
+ {
+ im_line_va[v*H_RES+h] = 1;
+ }
+ wait(.03);
+ }
+
+ for(int v = Y_MAX+15; v > Y_MIN; v--)
+ {
+ for(uint16_t h = X_MIN; h < X_MAX; h++)
+ {
+ im_line_va[v*H_RES+h] = 0;
+ }
+ wait(.03);
+ }
+
+ for(uint16_t h = X_MIN; h < X_MAX; h++)
+ {
+ for(uint16_t v = Y_MIN; v < Y_MAX+15; v++)
+ {
+ im_line_va[v*H_RES + h] = 1;
+ }
+ wait(.03);
+ }
+
+ for(uint16_t h = X_MIN; h < X_MAX; h++)
+ {
+ for(uint16_t v = Y_MIN; v < Y_MAX+15; v++)
+ {
+ im_line_va[v*H_RES + h] = 0;
+ }
+ wait(.03);
+ }
+
+ for(int v = Y_MIN; v < Y_MAX+15; v++)
+ {
+ for(uint16_t h = X_MIN; h < X_MAX; h++)
+ {
+ im_line_va[v*H_RES+h] = 0;
+ }
+ }
+}
+
+void draw_cube_spin(int kkkk)
+{
+ draw_line_inv = kkkk;
+ //blank
+ for(uint16_t h = X_MIN; h < X_MAX; h++)
+ {
+ for(uint16_t v = Y_MIN; v < Y_MAX; v++)
+ {
+ if( (h > 22) && (h < 76+18))
+ im_line_va[v*H_RES + h] = kkkk;
+ }
+ }
+ apply_xf_rot(cube_a,y_rot);
+ apply_xf_rot(cube_a,y_rot);
+ apply_rot(cube_pts,x_rot);
+ apply_rot(cube_pts,x_rot);
+ apply_rot(cube_pts,y_rot);
+ apply_rot(cube_pts,y_rot);
+ apply_rot(cube_pts,z_rot);
+ //draw ball
+ im_line_va[(py/10)*H_RES + (px/10)] = 1;
+ draw_line(X_0,Y_0,(px/10),(py/10));
+ draw_cube(cube_pts);
+
+ //update position/check for bounces
+ px += vx;
+ py += vy;
+ px2 += vx2;
+ py2 += vy2;
+ if(px/10 > (X_MAX-2) || px/10 < (X_MIN+1)) vx = -vx;
+ if(py/10 > (Y_MAX-2) || py/10 < (Y_MIN+1)) vy = -vy;
+ if(px2/10 > (X_MAX-2) || px2/10 < (X_MIN+1)) vx2 = -vx2;
+ if(py2/10 > (Y_MAX-2) || py2/10 < (Y_MIN+1)) vy2 = -vy2;
+ if(k%(8000*50)) return;
+
+ jjj = !jjj;
+ int bmi = 0;
+ for(int y = BY_0; y < BY_0 + BY; y++)
+ {
+ for(int x = BX_0; x < BX_0 + BX; x++)
+ {
+ im_line_va[H_RES*y + x] = kkkk^(miters[bmi]*jjj + (!jjj)*tv[bmi]);
+ bmi++;
+ }
+ }
+}
+
+int main() {
+ init_buffers();
+ t.attach_us(&isr,63);
+ for(;;)
+ {
+ update_image();
+ }
+}