Annika/UwUGL
1
0
Fork 1
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

added line drawing

Browse Source
This commit is contained in:
Annika
2026-07-04 04:05:20 -07:00
parent b32f0a216b
commit 1011f03467
2 changed files with 135 additions and 74 deletions
Download Patch File Download Diff File Expand all files Collapse all files
test
BIN
View File
Binary file not shown.
test.cpp
+78 -17
View File
@@ -44,8 +44,61 @@ namespace UwU {
};
class Draw {
// private:
// lineLow()
private:
// plot lines if m<= 1
void lineLow(int32_t x0, int32_t y0, int32_t x1, int32_t y1, Color color) {
int32_t dx = x1 - x0;
int32_t dy = y1 - y0;
int32_t yi = 1;
if (dy < 0) {
yi = -1;
dy = -dy;
}
int32_t d = (2 * dy) - dx;
int32_t y = y0;
for (int32_t x = x0; x < x1; x++) {
size_t i = (size_t)y * waymini_get_stride(this->wm) + (size_t)x * 4;
this->pixels[i + 0] = color.b; // B
this->pixels[i + 1] = color.g; // G
this->pixels[i + 2] = color.r; // R
this->pixels[i + 3] = 0xFF; // A
if (d > 0) {
y += yi;
d += (2 * (dy - dx));
} else {
d += (2 * dy);
}
}
return;
}
// plot lines if m<= 1
void lineHigh(int32_t x0, int32_t y0, int32_t x1, int32_t y1, Color color) {
int32_t dx = x1 - x0;
int32_t dy = y1 - y0;
int32_t xi = 1;
if (dx < 0) {
xi = -1;
dx = -dx;
}
int32_t d = (2 * dx) - dy;
int32_t x = x0;
for (int32_t y = y0; y < y1; y++) {
size_t i = (size_t)y * waymini_get_stride(this->wm) + (size_t)x * 4;
this->pixels[i + 0] = color.b; // B
this->pixels[i + 1] = color.g; // G
this->pixels[i + 2] = color.r; // R
this->pixels[i + 3] = 0xFF; // A
if (d > 0) {
x += xi;
d += (2 * (dx - dy));
} else {
d += (2 * dx);
}
}
return;
}
public:
struct waymini* wm;
@@ -111,23 +164,23 @@ namespace UwU {
// Uses Bresenham's line algorithm to draw line of any slope
void line (Coord2 point0, Coord2 point1, Color color) {
if (point0.x > this->width || point0.y > this->height || point1.x > this->width || point1.y > this->height) {return;};
int32_t dx = (int32_t)x1 - (int32_t)x0;
int32_t dy = (int32_t)y1 - (int32_t)y1;
int32_t yi = 1;
if (dy < 0) {
yi = -1;
dy = -dy;
int32_t x0 = (int32_t)point0.x;
int32_t y0 = (int32_t)point0.y;
int32_t x1 = (int32_t)point1.x;
int32_t y1 = (int32_t)point1.y;
if (abs(y1 - y0) < abs(x1 - x0)) {
if (x0 > x1) {
this->lineLow(x1, y1, x0, y0, color);
} else {
this->lineLow(x0, y0, x1, y1, color);
}
} else {
if (y0 > y1) {
this->lineHigh(x1, y1, x0, y0, color);
} else {
this->lineHigh(x0, y0, x1, y1, color);
}
int32_t d = (2 * dy) - dx;
int32_t y = y0
for (uint32_t x = x0; x < x1; x++) {
}
size_t i = (size_t)y * waymini_get_stride(this->wm) + (size_t)x * 4;
this->pixels[i + 0] = b; // B
this->pixels[i + 1] = g; // G
this->pixels[i + 2] = r; // R
this->pixels[i + 3] = 0xFF; // A
}
};
}
@@ -146,6 +199,14 @@ int main(void) {
waymini_present(draw.wm);
draw.rectangle(UwU::Coord2(69, 69), UwU::Coord2(420, 420), fuchsia);
draw.point(UwU::Coord2(387, 43), green);
draw.line(UwU::Coord2(300, 100), UwU::Coord2(250, 469), green);
draw.line(UwU::Coord2(250, 100), UwU::Coord2(300, 469), green);
draw.line(UwU::Coord2(300, 100), UwU::Coord2(469, 250), green);
draw.line(UwU::Coord2(469, 100), UwU::Coord2(300, 250), green);
draw.line(UwU::Coord2(100, 300), UwU::Coord2(250, 469), green);
draw.line(UwU::Coord2(250, 300), UwU::Coord2(100, 469), green);
draw.line(UwU::Coord2(100, 300), UwU::Coord2(469, 250), green);
draw.line(UwU::Coord2(469, 300), UwU::Coord2(100, 250), green);
while (!waymini_should_close(draw.wm)) {
if (waymini_dispatch(draw.wm) < 0) break;