sfw/render/sprite.cpp

62 lines
1.2 KiB
C++

#include "sprite.h"
void Sprite::render() {
mesh_instance->position.x = position.x;
mesh_instance->position.y = position.y;
mesh_instance->rotation.z = rotation;
mesh_instance->scale.x = scale.x;
mesh_instance->scale.y = scale.y;
mesh_instance->render();
}
void Sprite::update_mesh() {
Mesh *mesh = mesh_instance->mesh;
mesh->clear();
float w2 = width / 2.0;
float h2 = height / 2.0;
mesh->add_uv(region_x, region_y);
mesh->add_vertex2(-w2, h2);
mesh->add_uv(region_x + region_width, region_y + region_height);
mesh->add_vertex2(w2, -h2);
mesh->add_uv(region_x, region_y + region_height);
mesh->add_vertex2(-w2, -h2);
mesh->add_uv(region_x + region_width, region_y);
mesh->add_vertex2(w2, h2);
mesh->add_triangle(1, 0, 2);
mesh->add_triangle(0, 1, 3);
mesh->upload();
}
Sprite::Sprite() : Object2D() {
mesh_instance = new MeshInstance();
mesh_instance->mesh = new Mesh(2);
width = 1;
height = 1;
region_x = 0;
region_y = 0;
region_width = 1;
region_height = 1;
}
Sprite::~Sprite() {
delete mesh_instance->mesh;
delete mesh_instance;
}