charcoal/Example/MyTestTextScene.cpp

#include "MyTextTestScene.h"

#include <charcoal/TextureFactory.h>

#include <charcoal-builtin/MeshGenerator.h>
#include <charcoal-builtin/TextureGenerator.h>
#include <charcoal-builtin/GLUtil.h>

std::map<char, charcoal::Rectangle<int>> gen_font_stuff(const image_loader::ImageRGBA& image)
{
	std::map<char, charcoal::Rectangle<int>> ret;
	std::string alpha = " abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
	unsigned int delta_x = 18;
	unsigned int height = image.height;
	for (unsigned int i = 0; i < alpha.size(); ++i)
	{
		ret.emplace(alpha[i], charcoal::Rectangle<int>(0, height, i * delta_x, (i + 1) * delta_x));
	}
	return ret;
}

MyTextTestScene::MyTextTestScene(Application& application)
	: Scene(application),
	m_font_image(image_loader::load_file(IMAGE_PATH "consolas-32px.png")),
	m_font(m_font_image, gen_font_stuff(m_font_image)),
	m_text_image(m_font.get_text_image("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 test")),
	m_text(
		meshgenerator::gen_rect_pt<textured::Vertex, textured::Index>(DRAW_TRIANGLES, (float)m_text_image.width, (float)m_text_image.height),
		DRAW_TRIANGLES,
		TextureFactory::gen_image_texture(m_text_image),
		texturegenerator::gen_quick_sampler()
	),
	m_camera(m_screen_size),
	m_text_batch(&m_text, 1)
{
	m_pipeline.set_camera(&m_camera);
	m_pipeline.add_batch(&m_text_batch);
}

void MyTextTestScene::init()
{
	m_text_batch.init();

	m_text_batch.reset_rendered();
	m_text_batch.add_rendered(m_text_pose);
}

void MyTextTestScene::update(float delta_time, clock_t clock)
{
	// Do Nothing
}

void MyTextTestScene::prerender()
{
	m_camera.prerender();
	m_text_batch.prerender();
}

void MyTextTestScene::render()
{
	glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
	glutil::clear_screen();
	m_pipeline.render();
}