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UIcode.cpp
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UIcode.cpp
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#define GUILITE_ON //Do not define this macro once more!!!
#include "GuiLite.h"
#include <stdlib.h>
#include <string.h>
#include <math.h>
#define UI_WIDTH 240
#define UI_HEIGHT 320
#define SHAPE_SIZE 50
static c_surface* s_surface;
static c_display* s_display;
// 3D engine
void multiply(int m, int n, int p, double* a, double* b, double* c)// a[m][n] * b[n][p] = c[m][p]
{
for (int i = 0; i < m; i++) {
for (int j = 0; j < p; j++) {
c[i * p + j] = 0;
for (int k = 0; k < n; k++) {
c[i * p + j] += a[i * n + k] * b[k * p + j];
}
}
}
}
void rotateX(double angle, double* point, double* output)// rotate matrix for X
{
static double rotation[3][3];
rotation[0][0] = 1;
rotation[1][1] = cos(angle);
rotation[1][2] = 0 - sin(angle);
rotation[2][1] = sin(angle);
rotation[2][2] = cos(angle);
multiply(3, 3, 1, (double*)rotation, point, output);
}
void rotateY(double angle, double* point, double* output)// rotate matrix for Y
{
static double rotation[3][3];
rotation[0][0] = cos(angle);
rotation[0][2] = sin(angle);
rotation[1][1] = 1;
rotation[2][0] = 0 - sin(angle);
rotation[2][2] = cos(angle);
multiply(3, 3, 1, (double*)rotation, point, output);
}
void rotateZ(double angle, double* point, double* output)// rotate matrix for Z
{
static double rotation[3][3];
rotation[0][0] = cos(angle);
rotation[0][1] = 0 - sin(angle);
rotation[1][0] = sin(angle);
rotation[1][1] = cos(angle);
rotation[2][2] = 1;
multiply(3, 3, 1, (double*)rotation, point, output);
}
void projectOnXY(double* point, double* output, double zFactor = 1)
{
static double projection[2][3];//project on X/Y face
projection[0][0] = zFactor;//the raio of point.z and camera.z
projection[1][1] = zFactor;//the raio of point.z and camera.z
multiply(2, 3, 1, (double*)projection, point, output);
}
// Shape
class Shape {
public:
Shape() { angle = 0.5; }
virtual void draw(int x, int y, bool isErase) = 0;
virtual void rotate() = 0;
protected:
double angle;
};
class Cube : public Shape
{
public:
Cube()
{
memset(points2d, 0, sizeof(points2d));
}
virtual void draw(int x, int y, bool isErase)
{
for (int i = 0; i < 4; i++)
{
s_surface->draw_line(points2d[i][0] + x, points2d[i][1] + y, points2d[(i + 1) % 4][0] + x, points2d[(i + 1) % 4][1] + y, (isErase) ? 0 : 0xffff0000, Z_ORDER_LEVEL_0);
s_surface->draw_line(points2d[i + 4][0] + x, points2d[i + 4][1] + y, points2d[((i + 1) % 4) + 4][0] + x, points2d[((i + 1) % 4) + 4][1] + y, (isErase) ? 0 : 0xff00ff00, Z_ORDER_LEVEL_0);
s_surface->draw_line(points2d[i][0] + x, points2d[i][1] + y, points2d[(i + 4)][0] + x, points2d[(i + 4)][1] + y, (isErase) ? 0 : 0xffffff00, Z_ORDER_LEVEL_0);
}
}
virtual void rotate()
{
double rotateOut1[3][1], rotateOut2[3][1], rotateOut3[3][1];
for (int i = 0; i < 8; i++)
{
rotateX(angle, points[i], (double*)rotateOut1);
rotateY(angle, (double*)rotateOut1, (double*)rotateOut2);
rotateZ(angle, (double*)rotateOut2, (double*)rotateOut3);
projectOnXY((double*)rotateOut3, (double*)points2d[i]);
}
angle += 0.1;
}
private:
static double points[8][3];
double points2d[8][2];
};
double Cube::points[8][3] = {
{-SHAPE_SIZE, -SHAPE_SIZE, -SHAPE_SIZE},// x, y, z
{SHAPE_SIZE, -SHAPE_SIZE, -SHAPE_SIZE},
{SHAPE_SIZE, SHAPE_SIZE, -SHAPE_SIZE},
{-SHAPE_SIZE, SHAPE_SIZE, -SHAPE_SIZE},
{-SHAPE_SIZE, -SHAPE_SIZE, SHAPE_SIZE},
{SHAPE_SIZE, -SHAPE_SIZE, SHAPE_SIZE},
{SHAPE_SIZE, SHAPE_SIZE, SHAPE_SIZE},
{-SHAPE_SIZE, SHAPE_SIZE, SHAPE_SIZE}
};
class Pyramid : public Shape
{
public:
Pyramid()
{
memset(points2d, 0, sizeof(points2d));
}
virtual void draw(int x, int y, bool isErase)
{
s_surface->draw_line(points2d[0][0] + x, points2d[0][1] + y, points2d[1][0] + x, points2d[1][1] + y, (isErase) ? 0 : 0xff007acc, Z_ORDER_LEVEL_0);
s_surface->draw_line(points2d[0][0] + x, points2d[0][1] + y, points2d[2][0] + x, points2d[2][1] + y, (isErase) ? 0 : 0xff007acc, Z_ORDER_LEVEL_0);
s_surface->draw_line(points2d[0][0] + x, points2d[0][1] + y, points2d[3][0] + x, points2d[3][1] + y, (isErase) ? 0 : 0xff007acc, Z_ORDER_LEVEL_0);
s_surface->draw_line(points2d[0][0] + x, points2d[0][1] + y, points2d[4][0] + x, points2d[4][1] + y, (isErase) ? 0 : 0xff007acc, Z_ORDER_LEVEL_0);
s_surface->draw_line(points2d[1][0] + x, points2d[1][1] + y, points2d[2][0] + x, points2d[2][1] + y, (isErase) ? 0 : 0xff007acc, Z_ORDER_LEVEL_0);
s_surface->draw_line(points2d[2][0] + x, points2d[2][1] + y, points2d[3][0] + x, points2d[3][1] + y, (isErase) ? 0 : 0xff007acc, Z_ORDER_LEVEL_0);
s_surface->draw_line(points2d[3][0] + x, points2d[3][1] + y, points2d[4][0] + x, points2d[4][1] + y, (isErase) ? 0 : 0xff007acc, Z_ORDER_LEVEL_0);
s_surface->draw_line(points2d[4][0] + x, points2d[4][1] + y, points2d[1][0] + x, points2d[1][1] + y, (isErase) ? 0 : 0xff007acc, Z_ORDER_LEVEL_0);
}
virtual void rotate()
{
double rotateOut1[3][1], rotateOut2[3][1];
for (int i = 0; i < 5; i++)
{
rotateY(angle, points[i], (double*)rotateOut1);
rotateX(0.1, (double*)rotateOut1, (double*)rotateOut2);
double zFactor = SHAPE_SIZE / (2.2 * SHAPE_SIZE - rotateOut2[2][0]);
projectOnXY((double*)rotateOut2, (double*)points2d[i], zFactor);
}
angle += 0.1;
}
private:
static double points[5][3];
double points2d[5][2];
};
double Pyramid::points[5][3] = {
{0, -SHAPE_SIZE, 0},// top
{-SHAPE_SIZE, SHAPE_SIZE, -SHAPE_SIZE},
{SHAPE_SIZE, SHAPE_SIZE, -SHAPE_SIZE},
{SHAPE_SIZE, SHAPE_SIZE, SHAPE_SIZE},
{-SHAPE_SIZE, SHAPE_SIZE, SHAPE_SIZE}
};
// Demo
void create_ui(void* phy_fb, int screen_width, int screen_height, int color_bytes, struct DISPLAY_DRIVER* driver) {
static c_surface surface(UI_WIDTH, UI_HEIGHT, color_bytes, Z_ORDER_LEVEL_0);
static c_display display(phy_fb, screen_width, screen_height, &surface, driver);
s_surface = &surface;
s_display = &display;
s_surface->fill_rect(0, 0, UI_WIDTH - 1, UI_HEIGHT - 1, 0, Z_ORDER_LEVEL_0);
Cube theCube; Pyramid thePyramid;
while(1) {
theCube.draw(120, 100, true);//erase footprint
theCube.rotate();
theCube.draw(120, 100, false);//refresh cube
thePyramid.draw(120, 250, true);//erase footprint
thePyramid.rotate();
thePyramid.draw(120, 250, false);//refresh pyramid
thread_sleep(50);
}
}
//////////////////////// interface for all platform ////////////////////////
extern "C" void startHello3D(void* phy_fb, int width, int height, int color_bytes, struct DISPLAY_DRIVER* driver) {
create_ui(phy_fb, width, height, color_bytes, driver);
}
extern "C" void* getUiOfHello3D(int* width, int* height, bool force_update)
{
return s_display->get_updated_fb(width, height, force_update);
}