drone models (broken) and animation

1 files changed, 36 insertions, 0 deletions

diff --git a/src/opengl_widget.cc b/src/opengl_widget.cc
index 0251491..f10a8c6 100644
--- a/src/opengl_widget.cc
+++ b/src/opengl_widget.cc
@@ -1,5 +1,7 @@
 #include "opengl_widget.hh"
 
+#include <QMouseEvent>
+
 
 static const GLchar *vertex_shader_source = R"glsl(
 #version 330 core
@@ -135,9 +137,43 @@ void OpenGLWidget::resizeGL(int w, int h) {
 
 void OpenGLWidget::paintGL() {
 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+	QMatrix4x4 trans;
+	trans.translate(0, 0, -cam_dist);
+	QMatrix4x4 view = trans * rot;
+	glUniformMatrix4fv(view_attr, 1, GL_FALSE, view.data());
 	for (const OpenGLMesh &mesh : meshes) {
 		glUniformMatrix4fv(model_attr, 1, GL_FALSE, mesh.mat.data());
 		glBindVertexArray(mesh.vao);
 		glDrawArrays(GL_TRIANGLES, 0, mesh.nverts);
 	}
 }
+
+
+void OpenGLWidget::mousePressEvent(QMouseEvent *e) {
+	if (e->button() == Qt::LeftButton) {
+		mouse_pos = e->pos();
+	}
+}
+
+
+void OpenGLWidget::mouseReleaseEvent(QMouseEvent *e) {
+	(void) e;
+	rot_start = rot;
+}
+
+
+void OpenGLWidget::mouseMoveEvent(QMouseEvent *e) {
+	if (e->buttons() & Qt::LeftButton) {
+		QPoint delta = e->pos() - mouse_pos;
+		rot = rot_start;
+		rot.rotate(delta.x() / 5., 0, 1, 0);
+		rot.rotate(delta.y() / 5., QVector3D(1, 0, 0) * rot);
+		update();
+	}
+}
+
+
+void OpenGLWidget::wheelEvent(QWheelEvent *e) {
+	cam_dist -= e->angleDelta().y() / 1000. * cam_dist;
+	update();
+}