73 lines
1.7 KiB
C++
73 lines
1.7 KiB
C++
#include "LineBatch.h"
|
|
#include "Mesh.h"
|
|
|
|
#include <GL/glew.h>
|
|
|
|
const uint LB_VERTEX_SIZE = (3+4);
|
|
|
|
LineBatch::LineBatch(size_t capacity) : capacity(capacity) {
|
|
const vattr attrs[] = { {3},{4}, {0} };
|
|
buffer = new float[capacity * LB_VERTEX_SIZE * 2];
|
|
mesh = new Mesh(buffer, 0, attrs);
|
|
index = 0;
|
|
}
|
|
|
|
LineBatch::~LineBatch(){
|
|
delete[] buffer;
|
|
delete mesh;
|
|
}
|
|
|
|
void LineBatch::line(float x1, float y1, float z1, float x2, float y2, float z2,
|
|
float r, float g, float b, float a) {
|
|
buffer[index] = x1;
|
|
buffer[index+1] = y1;
|
|
buffer[index+2] = z1;
|
|
buffer[index+3] = r;
|
|
buffer[index+4] = g;
|
|
buffer[index+5] = b;
|
|
buffer[index+6] = a;
|
|
index += LB_VERTEX_SIZE;
|
|
|
|
buffer[index] = x2;
|
|
buffer[index+1] = y2;
|
|
buffer[index+2] = z2;
|
|
buffer[index+3] = r;
|
|
buffer[index+4] = g;
|
|
buffer[index+5] = b;
|
|
buffer[index+6] = a;
|
|
index += LB_VERTEX_SIZE;
|
|
}
|
|
|
|
void LineBatch::box(float x, float y, float z, float w, float h, float d,
|
|
float r, float g, float b, float a) {
|
|
w *= 0.5f;
|
|
h *= 0.5f;
|
|
d *= 0.5f;
|
|
|
|
line(x-w, y-h, z-d, x+w, y-h, z-d, r,g,b,a);
|
|
line(x-w, y+h, z-d, x+w, y+h, z-d, r,g,b,a);
|
|
line(x-w, y-h, z+d, x+w, y-h, z+d, r,g,b,a);
|
|
line(x-w, y+h, z+d, x+w, y+h, z+d, r,g,b,a);
|
|
|
|
line(x-w, y-h, z-d, x-w, y+h, z-d, r,g,b,a);
|
|
line(x+w, y-h, z-d, x+w, y+h, z-d, r,g,b,a);
|
|
line(x-w, y-h, z+d, x-w, y+h, z+d, r,g,b,a);
|
|
line(x+w, y-h, z+d, x+w, y+h, z+d, r,g,b,a);
|
|
|
|
line(x-w, y-h, z-d, x-w, y-h, z+d, r,g,b,a);
|
|
line(x+w, y-h, z-d, x+w, y-h, z+d, r,g,b,a);
|
|
line(x-w, y+h, z-d, x-w, y+h, z+d, r,g,b,a);
|
|
line(x+w, y+h, z-d, x+w, y+h, z+d, r,g,b,a);
|
|
}
|
|
|
|
void LineBatch::render(){
|
|
if (index == 0)
|
|
return;
|
|
mesh->reload(buffer, index / LB_VERTEX_SIZE);
|
|
mesh->draw(GL_LINES);
|
|
index = 0;
|
|
}
|
|
|
|
void LineBatch::lineWidth(float width) {
|
|
glLineWidth(width);
|
|
} |