implement all guides

2 files changed, 51 insertions, 6 deletions

diff --git a/src/drone_controller.cc b/src/drone_controller.cc
index 2ad3ec8..24cfa2d 100644
--- a/src/drone_controller.cc
+++ b/src/drone_controller.cc
@@ -78,17 +78,59 @@ void DroneController::drawTrajectory(QOpenGLExtraFunctions *f, const Drone &d) c
 
 void DroneController::drawGuide(QOpenGLExtraFunctions *f, const Drone &d) const {
 	OpenGLWidget::instance->getLineProgram()->bind();
-	OpenGLWidget::instance->getLineProgram()->setUniformValue("color", .2, .2, .2);
-	GLfloat data[6] = {
+	f->glEnableVertexAttribArray(0);
+	f->glBindBuffer(GL_ARRAY_BUFFER, 0);
+	f->glDisable(GL_CULL_FACE);
+
+	QVector<GLfloat> support_line {
 		d.getPos().x(), 0, d.getPos().z(),
 		d.getPos().x(), d.getPos().y(), d.getPos().z(),
 	};
-	f->glEnableVertexAttribArray(0);
-	f->glBindBuffer(GL_ARRAY_BUFFER, 0);
-	f->glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, data);
 	glLineWidth(2);
-	f->glDisable(GL_CULL_FACE);
+	OpenGLWidget::instance->getLineProgram()->setUniformValue("color", .2, .2, .4);
+	f->glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, support_line.constData());
 	f->glDrawArrays(GL_LINES, 0, 2);
+
+	QVector<GLfloat> grid;
+	const int size = 1000;
+	const float offset = 0;
+	for (int i = -size; i < size; i += 10) {
+		grid.append(i);
+		grid.append(offset);
+		grid.append(-size);
+		grid.append(i);
+		grid.append(offset);
+		grid.append(size);
+		grid.append(-size);
+		grid.append(offset);
+		grid.append(i);
+		grid.append(size);
+		grid.append(offset);
+		grid.append(i);
+	}
+	glLineWidth(1);
+	OpenGLWidget::instance->getLineProgram()->setUniformValue("color", .2, .2, .2);
+	f->glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, grid.constData());
+	f->glDrawArrays(GL_LINES, 0, grid.size() / 3);
+
+	glDisable(GL_DEPTH_TEST); // pro-gamer move
+	QVector<GLfloat> axes {
+		0, 0, 0, 1, 0, 0,
+		0, 0, 0, 0, 1, 0,
+		0, 0, 0, 0, 0, 1
+	};
+	glLineWidth(2);
+	OpenGLWidget::instance->getLineProgram()->setUniformValue("color", 1, 0, 0);
+	f->glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, axes.constData());
+	f->glDrawArrays(GL_LINES, 0, 2);
+	OpenGLWidget::instance->getLineProgram()->setUniformValue("color", 0, 1, 0);
+	f->glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, axes.constData() + 6);
+	f->glDrawArrays(GL_LINES, 0, 2);
+	OpenGLWidget::instance->getLineProgram()->setUniformValue("color", 0, 0, 1);
+	f->glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, axes.constData() + 12);
+	f->glDrawArrays(GL_LINES, 0, 2);
+	glDisable(GL_DEPTH_TEST);
+
 	f->glEnable(GL_CULL_FACE);
 	OpenGLWidget::instance->getLineProgram()->release();
 	OpenGLWidget::instance->getMainProgram()->bind();
diff --git a/src/opengl_widget.cc b/src/opengl_widget.cc
index ccdcac5..2100af0 100644
--- a/src/opengl_widget.cc
+++ b/src/opengl_widget.cc
@@ -207,7 +207,10 @@ void OpenGLWidget::paintGL() {
 	main_program.setUniformValue("view", view);
 	main_program.setUniformValue("highlight", false);
 	glActiveTexture(GL_TEXTURE0);
+	glEnable(GL_POLYGON_OFFSET_FILL);
+	glPolygonOffset(1, 1);
 	ground->draw(this, QMatrix4x4());
+	glDisable(GL_POLYGON_OFFSET_FILL);
 	if (painter) painter->draw(this);
 	main_program.release();
 }