Initial commit

engines/tetraedge/te/te_clip_layout.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "tetraedge/te/te_clip_layout.h"
+#include "tetraedge/tetraedge.h"
+#include "tetraedge/game/application.h"
+#include "tetraedge/te/te_renderer.h"
+
+namespace Tetraedge {
+
+TeClipLayout::TeClipLayout() {
+}
+
+void TeClipLayout::draw() {
+	if (!worldVisible())
+		return;
+
+	TeRenderer *renderer = g_engine->getRenderer();
+	bool prevScissorEnabled = renderer->scissorEnabled();
+	const TeVector2f32 prevScissorPos(renderer->scissorX(), renderer->scissorY());
+	const TeVector2f32 prevScissorSize(renderer->scissorWidth(), renderer->scissorHeight());
+
+	const TeMatrix4x4 worldTransform = worldTransformationMatrix();
+
+	const TeVector3f32 v1 = worldTransform * TeVector3f32(0, 0, 0);
+	const TeVector3f32 v2 = worldTransform * TeVector3f32(1, 0, 0);
+	const TeVector3f32 v3 = worldTransform * TeVector3f32(0, 1, 0);
+
+	const TeVector3f32 offset((v2 - v1).length(), (v3 - v1).length(), 1);
+	const TeVector3f32 thisSize(xSize(), ySize(), 0);
+	const TeVector3f32 newScissorSize = thisSize * offset;
+	const TeVector3f32 transformedSize(v1.x() - newScissorSize.x() / 2, v1.y() + newScissorSize.y() / 2, 0);
+
+	const TeVector3f32 winSize = g_engine->getApplication()->getMainWindow().size();
+
+	const TeVector3f32 newScissorOff(transformedSize.x() + winSize.x() / 2, winSize.y() - (transformedSize.y() + winSize.y() / 2), 0);
+
+	renderer->setScissorEnabled(true);
+	renderer->setScissor(newScissorOff.x(), newScissorOff.y(), newScissorSize.x(), newScissorSize.y());
+
+	TeLayout::draw();
+
+	renderer->setScissor(prevScissorPos.getX(), prevScissorPos.getY(), prevScissorSize.getX(), prevScissorSize.getY());
+	renderer->setScissorEnabled(prevScissorEnabled);
+}
+
+} // end namespace Tetraedge