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renderer.cpp
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661 lines (580 loc) · 9.06 KB
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internal void
clear_screen(u32 color) {
unsigned int* pixel = (u32*)render_state.memory;
for (int y = 0; y < render_state.height; y++) {
for (int x = 0; x < render_state.width; x++) {
*pixel++ = color;
}
}
}
global_variable float render_scale = 0.01f;
internal void
draw_rect_in_pixels(int x0, int y0, int x1, int y1, u32 color) {
x0 = clamp(0, x0, render_state.width);
x1 = clamp(0, x1, render_state.width);
y0 = clamp(0, y0, render_state.height);
y1 = clamp(0, y1, render_state.height);
for (int y = y0; y < y1; y++) {
u32* pixel = (u32*)render_state.memory + x0 + y * render_state.width ;
for (int x = x0; x < x1; x++) {
*pixel++ = color;
}
}
}
internal void
draw_rect(float x, float y, float half_size_x, float half_size_y, u32 color) {
x *= render_state.height * render_scale;
y *= render_state.height * render_scale;
half_size_x *= render_state.height * render_scale;
half_size_y *= render_state.height * render_scale;
x += render_state.width / 2.f;
y += render_state.height / 2.f;
int x0 = x - half_size_x;
int x1 = x + half_size_x;
int y0 = y - half_size_y;
int y1 = y + half_size_y;
draw_rect_in_pixels(x0, y0, x1, y1, color);
}
internal void
draw_number(int num, float x, float y, u32 color) {
int digit = 1;
bool drew_number = false;
while (num != 0 || !drew_number) {
digit = num % 10;
num = num / 10;
switch (digit) {
case 0: {
draw_rect(x, y - 2.5, 1.25, .5, color);
draw_rect(x, y + 2.5, 1.25, .5, color);
draw_rect(x - .75, y + 1.25, .5, 1.25, color);
draw_rect(x + .75, y - 1.25, .5, 1.25, color);
draw_rect(x + .75, y + 1.25, .5, 1.25, color);
draw_rect(x - .75, y - 1.25, .5, 1.25, color);
x -= 3;
} break;
case 1: {
draw_rect(x+.5, y, .5, 3, color);
x -= 1.75;
} break;
case 2: {
draw_rect(x, y - 2.5, 1.25, .5, color);
draw_rect(x, y, 1.25, .5, color);
draw_rect(x, y + 2.5, 1.25, .5, color);
draw_rect(x - .75, y - 1.25, .5, .75, color);
draw_rect(x + .75, y + 1.25, .5, .75, color);
x -= 3;
} break;
case 3: {
draw_rect(x + 1, y, .5, 3, color);
draw_rect(x, y - 2.5, 1.25, .5, color);
draw_rect(x + .1, y, 1, .5, color);
draw_rect(x, y + 2.5, 1.25, .5, color);
x -= 3;
} break;
case 4: {
draw_rect(x + 1, y, .5, 3, color);
draw_rect(x, y, 1.5, .5, color);
draw_rect(x - 1, y + 1.5, .5, 1.5, color);
x -= 3.3;
} break;
case 5: {
draw_rect(x, y - 2.5, 1.25, .5, color);
draw_rect(x, y, 1.25, .5, color);
draw_rect(x, y + 2.5, 1.25, .5, color);
draw_rect(x - .75, y + 1.25, .5, .75, color);
draw_rect(x + .75, y - 1.25, .5, .75, color);
x -= 3;
} break;
case 6: {
draw_rect(x, y - 2.5, 1.25, .5, color);
draw_rect(x, y, 1.25, .5, color);
draw_rect(x, y + 2.5, 1.25, .5, color);
draw_rect(x - .75, y + 1.25, .5, .75, color);
draw_rect(x + .75, y - 1.25, .5, .75, color);
draw_rect(x - .75, y - 1.25, .5, .75, color);
x -= 3;
} break;
case 7: {
draw_rect(x, y + 2.5, 1.25, .5, color);
draw_rect(x + 1, y, .5, 3, color);
x -= 3;
} break;
case 8: {
draw_rect(x, y - 2.5, 1.25, .5, color);
draw_rect(x, y, 1.25, .5, color);
draw_rect(x, y + 2.5, 1.25, .5, color);
draw_rect(x - .75, y + 1.25, .5, .75, color);
draw_rect(x + .75, y - 1.25, .5, .75, color);
draw_rect(x + .75, y + 1.25, .5, .75, color);
draw_rect(x - .75, y - 1.25, .5, .75, color);
x -= 3;
} break;
case 9: {
draw_rect(x, y - 2.5, 1.25, .5, color);
draw_rect(x, y, 1.25, .5, color);
draw_rect(x, y + 2.5, 1.25, .5, color);
draw_rect(x - .75, y + 1.25, .5, .75, color);
draw_rect(x + .75, y - 1.25, .5, .75, color);
draw_rect(x + .75, y + 1.25, .5, .75, color);
x -= 3;
} break;
}
drew_number = true;
}
}
const char* letters[][7] = {
" 00",
"0 0",
"0 0",
"0000",
"0 0",
"0 0",
"0 0",
"000",
"0 0",
"0 0",
"000",
"0 0",
"0 0",
"000",
" 000",
"0",
"0",
"0",
"0",
"0",
" 000",
"000",
"0 0",
"0 0",
"0 0",
"0 0",
"0 0",
"000",
"0000",
"0",
"0",
"000",
"0",
"0",
"0000",
"0000",
"0",
"0",
"000",
"0",
"0",
"0",
" 000",
"0",
"0",
"0 00",
"0 0",
"0 0",
" 000",
"0 0",
"0 0",
"0 0",
"0000",
"0 0",
"0 0",
"0 0",
"000",
" 0",
" 0",
" 0",
" 0",
" 0",
"000",
" 000",
" 0",
" 0",
" 0",
"0 0",
"0 0",
" 000",
"0 0",
"0 0",
"0 0",
"00",
"0 0",
"0 0",
"0 0",
"0",
"0",
"0",
"0",
"0",
"0",
"0000",
"00 00",
"0 0 0",
"0 0 0",
"0 0",
"0 0",
"0 0",
"0 0",
"00 0",
"0 0 0",
"0 0 0",
"0 0 0",
"0 0 0",
"0 0 0",
"0 00",
"0000",
"0 0",
"0 0",
"0 0",
"0 0",
"0 0",
"0000",
" 000",
"0 0",
"0 0",
"000",
"0",
"0",
"0",
" 000 ",
"0 0",
"0 0",
"0 0",
"0 0 0",
"0 0 ",
" 00 0",
"000",
"0 0",
"0 0",
"000",
"0 0",
"0 0",
"0 0",
" 000",
"0",
"0 ",
" 00",
" 0",
" 0",
"000 ",
"000",
" 0",
" 0",
" 0",
" 0",
" 0",
" 0",
"0 0",
"0 0",
"0 0",
"0 0",
"0 0",
"0 0",
" 00",
"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",
" 0",
" 0",
" 0",
" 0",
"0000",
" 0",
" 0",
" 0",
"0",
"0",
"0000",
"",
"",
"",
"",
"",
"",
"0",
" 0",
" 0",
" 0",
" 0",
" 0",
"0",
"0",
};
internal void
draw_text(const char* text, float x, float y, float size, u32 color) {
float half_size = size * .5f;
float original_y = y;
while (*text) {
if (*text != 32) {
const char** letter;
if (*text == 47) letter = letters[27];
else if (*text == 46) letter = letters[26];
else letter = letters[*text - 'A'];
float original_x = x;
for (int i = 0; i < 7; i++) {
const char* row = letter[i];
while (*row) {
if (*row == '0') {
draw_rect(x, y, half_size, half_size, color);
}
x += size;
row++;
}
y -= size;
x = original_x;
}
}
text++;
x += size * 6.f;
y = original_y;
}
}
string letters2[28][7] = {
" 00",
"0 0",
"0 0",
"0000",
"0 0",
"0 0",
"0 0",
"000",
"0 0",
"0 0",
"000",
"0 0",
"0 0",
"000",
" 000",
"0",
"0",
"0",
"0",
"0",
" 000",
"000",
"0 0",
"0 0",
"0 0",
"0 0",
"0 0",
"000",
"0000",
"0",
"0",
"000",
"0",
"0",
"0000",
"0000",
"0",
"0",
"000",
"0",
"0",
"0",
" 000",
"0",
"0",
"0 00",
"0 0",
"0 0",
" 000",
"0 0",
"0 0",
"0 0",
"0000",
"0 0",
"0 0",
"0 0",
"000",
" 0",
" 0",
" 0",
" 0",
" 0",
"000",
" 000",
" 0",
" 0",
" 0",
"0 0",
"0 0",
" 000",
"0 0",
"0 0",
"0 0",
"00",
"0 0",
"0 0",
"0 0",
"0",
"0",
"0",
"0",
"0",
"0",
"0000",
"00 00",
"0 0 0",
"0 0 0",
"0 0",
"0 0",
"0 0",
"0 0",
"00 0",
"0 0 0",
"0 0 0",
"0 0 0",
"0 0 0",
"0 0 0",
"0 00",
"0000",
"0 0",
"0 0",
"0 0",
"0 0",
"0 0",
"0000",
" 000",
"0 0",
"0 0",
"000",
"0",
"0",
"0",
" 000 ",
"0 0",
"0 0",
"0 0",
"0 0 0",
"0 0 ",
" 00 0",
"000",
"0 0",
"0 0",
"000",
"0 0",
"0 0",
"0 0",
" 000",
"0",
"0 ",
" 00",
" 0",
" 0",
"000 ",
"000",
" 0",
" 0",
" 0",
" 0",
" 0",
" 0",
"0 0",
"0 0",
"0 0",
"0 0",
"0 0",
"0 0",
" 00",
"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",
" 0",
" 0",
" 0",
" 0",
"0000",
" 0",
" 0",
" 0",
"0",
"0",
"0000",
"",
"",
"",
"",
"",
"",
"0",
" 0",
" 0",
" 0",
" 0",
" 0",
"0",
"0",
};
internal void
draw_text2(string text, float x, float y, float size, u32 color) {
float half_size = size * .5f;
float original_y = y;
int k = 0; //the letters being typed
while (k <= text.length()) {
if (int(text[k]) != 32) {
int letter_index; // the index of the letters2 matrix which indicate which letter is to be used
if (int(text[k]) == 47) letter_index = 27;
else if (int(text[k]) == 46) letter_index = 26;
else letter_index = int(text[k]) - 'A';
float original_x = x;
for (int i = 0; i < 7; i++) {
string row = letters2[letter_index][i];
int j = 0;
while (row[j]) {
if (row[j] == '0') {
draw_rect(x, y, half_size, half_size, color);
}
x += size;
j++;
}
y -= size;
x = original_x;
}
}
k++;
x += size * 6.f;
y = original_y;
}
}