Import aap/librw @ masterHEADmaster

Snapshot for re3/reVC vendoring, per @lzcnt.
Source: https://github.com/aap/librw (master).

6 files changed, 921 insertions, 0 deletions

diff --git a/tools/lights/CMakeLists.txt b/tools/lights/CMakeLists.txt
new file mode 100644
index 0000000..c51a2e3
--- /dev/null
+++ b/tools/lights/CMakeLists.txt
@@ -0,0 +1,18 @@
+add_executable(lights WIN32
+    main.cpp
+    lights.cpp
+)
+
+target_link_libraries(lights
+    PRIVATE
+        librw::skeleton
+        librw::librw
+)
+
+add_custom_command(
+    TARGET lights POST_BUILD
+    COMMAND "${CMAKE_COMMAND}" -E make_directory "$<TARGET_FILE_DIR:lights>/files"
+    COMMAND "${CMAKE_COMMAND}" -E copy_if_different "${CMAKE_CURRENT_SOURCE_DIR}/checker.dff" "$<TARGET_FILE_DIR:lights>"
+)
+
+librw_platform_target(lights)
diff --git a/tools/lights/checker.dff b/tools/lights/checker.dff
new file mode 100644
index 0000000..f955e8c
--- /dev/null
+++ b/tools/lights/checker.dff
diff --git a/tools/lights/lights.cpp b/tools/lights/lights.cpp
new file mode 100644
index 0000000..345df9f
--- /dev/null
+++ b/tools/lights/lights.cpp
@@ -0,0 +1,463 @@
+#include <rw.h>
+#include <skeleton.h>
+
+#include "main.h"
+
+rw::Light *BaseAmbientLight;
+bool BaseAmbientLightOn;
+
+rw::Light *CurrentLight;
+rw::Light *AmbientLight;
+rw::Light *PointLight;
+rw::Light *DirectLight;
+rw::Light *SpotLight;
+rw::Light *SpotSoftLight;
+
+float LightRadius = 100.0f;
+float LightConeAngle = 45.0f;
+rw::RGBAf LightColor = { 1.0f, 1.0f, 1.0f, 1.0f };
+
+rw::RGBA LightSolidColor = { 255, 255, 0, 255 };
+bool LightOn = true;
+bool LightDrawOn = true;
+rw::V3d LightPos = {0.0f, 0.0f, 75.0f};
+rw::int32 LightTypeIndex = 1;
+
+rw::BBox RoomBBox;
+
+rw::Light*
+CreateBaseAmbientLight(void)
+{
+	rw::Light *light = rw::Light::create(rw::Light::AMBIENT);
+	assert(light);
+	light->setColor(0.5f, 0.5f, 0.5f);
+	return light;
+}
+
+rw::Light*
+CreateAmbientLight(void)
+{
+	return rw::Light::create(rw::Light::AMBIENT);
+}
+
+rw::Light*
+CreateDirectLight(void)
+{
+	rw::Light *light = rw::Light::create(rw::Light::DIRECTIONAL);
+	assert(light);
+	rw::Frame *frame = rw::Frame::create();
+	assert(frame);
+	frame->rotate(&Xaxis, 45.0f, rw::COMBINEREPLACE);
+	rw::V3d pos = LightPos;
+	frame->translate(&pos, rw::COMBINEPOSTCONCAT);
+	light->setFrame(frame);
+	return light;
+}
+
+rw::Light*
+CreatePointLight(void)
+{
+	rw::Light *light = rw::Light::create(rw::Light::POINT);
+	assert(light);
+	light->radius = LightRadius;
+	rw::Frame *frame = rw::Frame::create();
+	assert(frame);
+	rw::V3d pos = LightPos;
+	frame->translate(&pos, rw::COMBINEREPLACE);
+	light->setFrame(frame);
+	return light;
+}
+
+rw::Light*
+CreateSpotLight(void)
+{
+	rw::Light *light = rw::Light::create(rw::Light::SPOT);
+	assert(light);
+	light->radius = LightRadius;
+	light->setAngle(LightConeAngle/180.0f*M_PI);
+	rw::Frame *frame = rw::Frame::create();
+	assert(frame);
+	frame->rotate(&Xaxis, 45.0f, rw::COMBINEREPLACE);
+	rw::V3d pos = LightPos;
+	frame->translate(&pos, rw::COMBINEPOSTCONCAT);
+	light->setFrame(frame);
+	return light;
+}
+
+rw::Light*
+CreateSpotSoftLight(void)
+{
+	rw::Light *light = rw::Light::create(rw::Light::SOFTSPOT);
+	assert(light);
+	light->radius = LightRadius;
+	light->setAngle(LightConeAngle/180.0f*M_PI);
+	rw::Frame *frame = rw::Frame::create();
+	assert(frame);
+	frame->rotate(&Xaxis, 45.0f, rw::COMBINEREPLACE);
+	rw::V3d pos = LightPos;
+	frame->translate(&pos, rw::COMBINEPOSTCONCAT);
+	light->setFrame(frame);
+	return light;
+}
+
+void
+DestroyLight(rw::Light **light)
+{
+	if(*light == nil)
+		return;
+	rw::World *world = (*light)->world;
+	if(world)
+		world->removeLight(*light);
+	rw::Frame *frame = (*light)->getFrame();
+	if(frame){
+		(*light)->setFrame(nil);
+		frame->destroy();
+	}
+
+	(*light)->destroy();
+	*light = nil;
+}
+
+void
+LightsDestroy(void)
+{
+	DestroyLight(&SpotSoftLight);
+	DestroyLight(&SpotLight);
+	DestroyLight(&PointLight);
+	DestroyLight(&DirectLight);
+	DestroyLight(&AmbientLight);
+	DestroyLight(&BaseAmbientLight);
+}
+
+void
+LightsUpdate(void)
+{
+	static rw::int32 oldLightTypeIndex = -1;
+
+	// Switch to a different light
+	if((LightOn && oldLightTypeIndex != LightTypeIndex) || CurrentLight == nil){
+		oldLightTypeIndex = LightTypeIndex;
+
+		// remove first
+		if(CurrentLight)
+			CurrentLight->world->removeLight(CurrentLight);
+
+		switch(LightTypeIndex){
+		case 0: CurrentLight = AmbientLight; break;
+		case 1: CurrentLight = PointLight; break;
+		case 2: CurrentLight = DirectLight; break;
+		case 3: CurrentLight = SpotLight; break;
+		case 4: CurrentLight = SpotSoftLight; break;
+		}
+		World->addLight(CurrentLight);
+	}
+
+	if(CurrentLight){
+		CurrentLight->setColor(LightColor.red, LightColor.green, LightColor.blue);
+		CurrentLight->radius = LightRadius;
+		CurrentLight->setAngle(LightConeAngle / 180.0f * M_PI);
+	}
+
+	// Remove light from world if not used
+	if(!LightOn && CurrentLight){
+		CurrentLight->world->removeLight(CurrentLight);
+		CurrentLight = nil;
+	}
+}
+
+#define POINT_LIGHT_RADIUS_FACTOR 0.05f
+
+void
+DrawPointLight(void)
+{
+	enum { NUMVERTS = 50 };
+	rw::RWDEVICE::Im3DVertex shape[NUMVERTS];
+	rw::int32 i;
+	rw::V3d point;
+
+	rw::V3d *pos = &CurrentLight->getFrame()->getLTM()->pos;
+	for(i = 0; i < NUMVERTS; i++){
+		point.x = pos->x +
+			cosf(i/(NUMVERTS/2.0f) * M_PI) * LightRadius * POINT_LIGHT_RADIUS_FACTOR;
+		point.y = pos->y +
+			sinf(i/(NUMVERTS/2.0f) * M_PI) * LightRadius * POINT_LIGHT_RADIUS_FACTOR;
+		point.z = pos->z;
+
+		shape[i].setColor(LightSolidColor.red, LightSolidColor.green,
+			LightSolidColor.blue, LightSolidColor.alpha);
+		shape[i].setX(point.x);
+		shape[i].setY(point.y);
+		shape[i].setZ(point.z);
+	}
+
+	rw::im3d::Transform(shape, NUMVERTS, nil, rw::im3d::ALLOPAQUE);
+	rw::im3d::RenderPrimitive(rw::PRIMTYPEPOLYLINE);
+	rw::im3d::RenderLine(NUMVERTS-1, 0);
+	rw::im3d::End();
+}
+
+void
+DrawCone(float coneAngle, float coneSize, float coneRatio)
+{
+	enum { NUMVERTS = 10 };
+	rw::RWDEVICE::Im3DVertex shape[NUMVERTS+1];
+	rw::int16 indices[NUMVERTS*3];
+	rw::int32 i;
+
+	rw::Matrix *matrix = CurrentLight->getFrame()->getLTM();
+	rw::V3d *pos = &matrix->pos;
+
+	// cone
+	for(i = 1; i < NUMVERTS+1; i++){
+		float cosValue = cosf(i/(NUMVERTS/2.0f) * M_PI) *
+			sinf(coneAngle/180.0f*M_PI);
+		float sinValue = sinf(i/(NUMVERTS/2.0f) * M_PI) *
+			sinf(coneAngle/180.0f*M_PI);
+
+		float coneAngleD = cosf(coneAngle/180.0f*M_PI);
+
+		rw::V3d up = rw::scale(matrix->up, sinValue*coneSize);
+		rw::V3d right = rw::scale(matrix->right, cosValue*coneSize);
+		rw::V3d at = rw::scale(matrix->at, coneAngleD*coneSize*coneRatio);
+
+		shape[i].setX(pos->x + at.x + up.x + right.x);
+		shape[i].setY(pos->y + at.y + up.y + right.y);
+		shape[i].setZ(pos->z + at.z + up.z + right.z);
+	}
+
+	for(i = 0; i < NUMVERTS; i++){
+		indices[i*3 + 0] = 0;
+		indices[i*3 + 1] = i+2;
+		indices[i*3 + 2] = i+1;
+	}
+	indices[NUMVERTS*3-2] = 1;
+
+	for(i = 0; i < NUMVERTS+1; i++)
+		shape[i].setColor(LightSolidColor.red, LightSolidColor.green,
+			LightSolidColor.blue, 128);
+
+	shape[0].setX(pos->x);
+	shape[0].setY(pos->y);
+	shape[0].setZ(pos->z);
+
+	rw::SetRenderState(rw::VERTEXALPHA, 1);
+	rw::SetRenderState(rw::SRCBLEND, rw::BLENDSRCALPHA);
+	rw::SetRenderState(rw::DESTBLEND, rw::BLENDINVSRCALPHA);
+
+	rw::im3d::Transform(shape, NUMVERTS+1, nil, 0);
+	rw::im3d::RenderPrimitive(rw::PRIMTYPETRIFAN);
+	rw::im3d::RenderTriangle(0, NUMVERTS, 1);
+	rw::im3d::RenderIndexedPrimitive(rw::PRIMTYPETRILIST, indices, NUMVERTS*3);
+	rw::im3d::End();
+
+
+	for(i = 0; i < NUMVERTS+1; i++)
+		shape[i].setColor(LightSolidColor.red, LightSolidColor.green,
+			LightSolidColor.blue, 255);
+
+	float coneAngleD = cosf(coneAngle/180.0f*M_PI);
+	rw::V3d at = rw::scale(matrix->at, coneAngleD*coneSize*coneRatio);
+	shape[0].setX(pos->x + at.x);
+	shape[0].setY(pos->y + at.y);
+	shape[0].setZ(pos->z + at.z);
+
+	rw::im3d::Transform(shape, NUMVERTS+1, nil, rw::im3d::ALLOPAQUE);
+	if(coneRatio > 0.0f){
+		rw::im3d::RenderPrimitive(rw::PRIMTYPETRIFAN);
+		rw::im3d::RenderTriangle(0, NUMVERTS, 1);
+	}else
+		rw::im3d::RenderIndexedPrimitive(rw::PRIMTYPETRIFAN, indices, NUMVERTS*3);
+	rw::im3d::End();
+
+
+	// lines
+	at = rw::scale(matrix->at, -0.05f);
+	shape[0].setX(pos->x + at.x);
+	shape[0].setY(pos->y + at.y);
+	shape[0].setZ(pos->z + at.z);
+	rw::im3d::Transform(shape, NUMVERTS+1, nil, rw::im3d::ALLOPAQUE);
+	rw::im3d::RenderIndexedPrimitive(rw::PRIMTYPEPOLYLINE, indices, NUMVERTS*3);
+	rw::im3d::End();
+}
+
+void
+DrawDirectLight(void)
+{
+	enum { NUMVERTS = 20 };
+	const float DIAMETER = 1.5f;
+	const float CONE_ANGLE = 45.0f;
+	const float CONE_SIZE = 3.0f;
+	const float LENGTH = 5.0f;
+	rw::RWDEVICE::Im3DVertex shape[NUMVERTS*2+1];
+	rw::int16 indices[NUMVERTS*3];
+	rw::int32 i;
+
+	rw::Matrix *matrix = CurrentLight->getFrame()->getLTM();
+	rw::V3d *pos = &matrix->pos;
+
+	// cylinder
+	for(i = 0; i < NUMVERTS*2; i += 2){
+		float cosValue = cosf(i/(NUMVERTS/2.0f) * M_PI);
+		float sinValue = sinf(i/(NUMVERTS/2.0f) * M_PI);
+
+		rw::V3d up = rw::scale(matrix->up, sinValue*DIAMETER);
+		rw::V3d right = rw::scale(matrix->right, cosValue*DIAMETER);
+		rw::V3d at = rw::scale(matrix->at, -(CONE_SIZE + 1.0f));
+
+		shape[i].setX(pos->x + at.x + up.x + right.x);
+		shape[i].setY(pos->y + at.y + up.y + right.y);
+		shape[i].setZ(pos->z + at.z + up.z + right.z);
+
+
+		at = rw::scale(matrix->at, -(LENGTH + CONE_SIZE));
+
+		shape[i+1].setX(pos->x + at.x + up.x + right.x);
+		shape[i+1].setY(pos->y + at.y + up.y + right.y);
+		shape[i+1].setZ(pos->z + at.z + up.z + right.z);
+	}
+
+	for(i = 0; i < NUMVERTS*2+1; i++)
+		shape[i].setColor(LightSolidColor.red, LightSolidColor.green,
+			LightSolidColor.blue, 128);
+
+	rw::SetRenderState(rw::VERTEXALPHA, 1);
+	rw::SetRenderState(rw::SRCBLEND, rw::BLENDSRCALPHA);
+	rw::SetRenderState(rw::DESTBLEND, rw::BLENDINVSRCALPHA);
+
+	rw::im3d::Transform(shape, NUMVERTS*2, nil, 0);
+	rw::im3d::RenderPrimitive(rw::PRIMTYPETRISTRIP);
+	rw::im3d::RenderTriangle(2*NUMVERTS-2, 2*NUMVERTS-1, 0);
+	rw::im3d::RenderTriangle(2*NUMVERTS-1, 1, 0);
+	rw::im3d::End();
+
+
+	// bottom cap
+	for(i = 0; i < NUMVERTS*2+1; i++)
+		shape[i].setColor(LightSolidColor.red, LightSolidColor.green,
+			LightSolidColor.blue, 255);
+
+	rw::V3d at = rw::scale(matrix->at, -(LENGTH + CONE_SIZE));
+	shape[NUMVERTS*2].setX(pos->x + at.x);
+	shape[NUMVERTS*2].setY(pos->y + at.y);
+	shape[NUMVERTS*2].setZ(pos->z + at.z);
+
+	for(i = 0; i < NUMVERTS; i++){
+		indices[i*3+0] = NUMVERTS*2;
+		indices[i*3+1] = (i+1)*2 + 1;
+		indices[i*3+2] = i*2 + 1;
+	}
+	indices[NUMVERTS*3-2] = 1;
+
+	rw::im3d::Transform(shape, NUMVERTS*2+1, nil, rw::im3d::ALLOPAQUE);
+	rw::im3d::RenderIndexedPrimitive(rw::PRIMTYPETRILIST, indices, NUMVERTS*3);
+	rw::im3d::End();
+
+
+	// top cap
+	at = rw::scale(matrix->at, -(CONE_SIZE + 1.0f));
+	shape[NUMVERTS*2].setX(pos->x + at.x);
+	shape[NUMVERTS*2].setY(pos->y + at.y);
+	shape[NUMVERTS*2].setZ(pos->z + at.z);
+
+	for(i = 0; i < NUMVERTS; i++){
+		indices[i*3+0] = NUMVERTS*2;
+		indices[i*3+1] = i*2;
+		indices[i*3+2] = (i+1)*2;
+	}
+
+	rw::im3d::Transform(shape, NUMVERTS*2+1, nil, rw::im3d::ALLOPAQUE);
+	rw::im3d::RenderIndexedPrimitive(rw::PRIMTYPETRILIST, indices, NUMVERTS*3);
+	rw::im3d::End();
+
+
+	// cone
+	DrawCone(CONE_ANGLE, CONE_SIZE, -2.0f);
+}
+
+void
+DrawCurrentLight(void)
+{
+	rw::SetRenderStatePtr(rw::TEXTURERASTER, nil);
+	rw::SetRenderState(rw::CULLMODE, rw::CULLBACK);
+	rw::SetRenderState(rw::ZTESTENABLE, 1);
+
+	switch(LightTypeIndex){
+	case 1: DrawPointLight(); break;
+	case 2: DrawDirectLight(); break;
+	case 3:
+	case 4: DrawCone(LightConeAngle, LightRadius*POINT_LIGHT_RADIUS_FACTOR, 1.0f); break;
+	}
+}
+
+
+
+void
+LightRotate(float xAngle, float yAngle)
+{
+	if(CurrentLight == nil || CurrentLight == AmbientLight || CurrentLight == PointLight)
+		return;
+
+	rw::Matrix *cameraMatrix = &Camera->getFrame()->matrix;
+	rw::Frame *lightFrame = CurrentLight->getFrame();
+	rw::V3d pos = lightFrame->matrix.pos;
+
+	pos = rw::scale(pos, -1.0f);
+	lightFrame->translate(&pos, rw::COMBINEPOSTCONCAT);
+
+	lightFrame->rotate(&cameraMatrix->up, xAngle, rw::COMBINEPOSTCONCAT);
+	lightFrame->rotate(&cameraMatrix->right, yAngle, rw::COMBINEPOSTCONCAT);
+
+	pos = rw::scale(pos, -1.0f);
+	lightFrame->translate(&pos, rw::COMBINEPOSTCONCAT);
+}
+
+void
+ClampPosition(rw::V3d *pos, rw::V3d *delta, rw::BBox *bbox)
+{
+	if(pos->x + delta->x < bbox->inf.x)
+		delta->x = bbox->inf.x - pos->x;
+	else if(pos->x + delta->x > bbox->sup.x)
+		delta->x = bbox->sup.x - pos->x;
+
+	if(pos->y + delta->y < bbox->inf.y)
+		delta->y = bbox->inf.y - pos->y;
+	else if(pos->y + delta->y > bbox->sup.y)
+		delta->y = bbox->sup.y - pos->y;
+
+	if(pos->z + delta->z < bbox->inf.z)
+		delta->z = bbox->inf.z - pos->z;
+	else if(pos->z + delta->z > bbox->sup.z)
+		delta->z = bbox->sup.z - pos->z;
+}
+
+void
+LightTranslateXY(float xDelta, float yDelta)
+{
+	if(CurrentLight == nil || CurrentLight == AmbientLight || CurrentLight == DirectLight)
+		return;
+
+	rw::Matrix *cameraMatrix = &Camera->getFrame()->matrix;
+	rw::Frame *lightFrame = CurrentLight->getFrame();
+	rw::V3d right = rw::scale(cameraMatrix->right, xDelta);
+	rw::V3d up = rw::scale(cameraMatrix->up, yDelta);
+	rw::V3d delta = rw::add(right, up);
+
+	ClampPosition(&lightFrame->matrix.pos, &delta, &RoomBBox);
+
+	lightFrame->translate(&delta, rw::COMBINEPOSTCONCAT);
+}
+
+void
+LightTranslateZ(float zDelta)
+{
+	if(CurrentLight == nil || CurrentLight == AmbientLight || CurrentLight == DirectLight)
+		return;
+
+	rw::Matrix *cameraMatrix = &Camera->getFrame()->matrix;
+	rw::Frame *lightFrame = CurrentLight->getFrame();
+	rw::V3d delta = rw::scale(cameraMatrix->at, zDelta);
+
+	ClampPosition(&lightFrame->matrix.pos, &delta, &RoomBBox);
+
+	lightFrame->translate(&delta, rw::COMBINEPOSTCONCAT);
+}
diff --git a/tools/lights/lights.h b/tools/lights/lights.h
new file mode 100644
index 0000000..5400a61
--- /dev/null
+++ b/tools/lights/lights.h
@@ -0,0 +1,37 @@
+
+
+extern rw::Light *BaseAmbientLight;
+extern bool BaseAmbientLightOn;
+
+extern rw::Light *CurrentLight;
+extern rw::Light *AmbientLight;
+extern rw::Light *PointLight;
+extern rw::Light *DirectLight;
+extern rw::Light *SpotLight;
+extern rw::Light *SpotSoftLight;
+
+extern float LightRadius;
+extern float LightConeAngle;
+extern rw::RGBAf LightColor;
+
+extern bool LightOn;
+extern bool LightDrawOn;
+extern rw::V3d LightPos;
+extern rw::int32 LightTypeIndex;
+
+extern rw::BBox RoomBBox;
+
+rw::Light *CreateBaseAmbientLight(void);
+rw::Light *CreateAmbientLight(void);
+rw::Light *CreateDirectLight(void);
+rw::Light *CreatePointLight(void);
+rw::Light *CreateSpotLight(void);
+rw::Light *CreateSpotSoftLight(void);
+
+void LightsDestroy(void);
+void LightsUpdate(void);
+void DrawCurrentLight(void);
+
+void LightRotate(float xAngle, float yAngle);
+void LightTranslateXY(float xDelta, float yDelta);
+void LightTranslateZ(float zDelta);
diff --git a/tools/lights/main.cpp b/tools/lights/main.cpp
new file mode 100644
index 0000000..3589d05
--- /dev/null
+++ b/tools/lights/main.cpp
@@ -0,0 +1,396 @@
+#include <rw.h>
+#include <skeleton.h>
+#include <assert.h>
+
+#include "main.h"
+#include "lights.h"
+
+rw::V3d zero = { 0.0f, 0.0f, 0.0f };
+rw::EngineOpenParams engineOpenParams;
+float FOV = 70.0f;
+
+rw::RGBA ForegroundColor = { 200, 200, 200, 255 };
+rw::RGBA BackgroundColor = { 64, 64, 64, 0 };
+
+rw::World *World;
+rw::Camera *Camera;
+
+rw::V3d Xaxis = { 1.0f, 0.0, 0.0f };
+rw::V3d Yaxis = { 0.0f, 1.0, 0.0f };
+rw::V3d Zaxis = { 0.0f, 0.0, 1.0f };
+
+rw::World*
+CreateWorld(void)
+{
+	rw::BBox bb;
+
+	bb.inf.x = bb.inf.y = bb.inf.z = -100.0f;
+	bb.sup.x = bb.sup.y = bb.sup.z = 100.0f;
+
+	return rw::World::create(&bb);
+}
+
+rw::Camera*
+CreateCamera(rw::World *world)
+{
+	rw::Camera *camera;
+	camera = sk::CameraCreate(sk::globals.width, sk::globals.height, 1);
+	assert(camera);
+	camera->setNearPlane(0.1f);
+	camera->setFarPlane(300.0f);
+	camera->setFOV(FOV, (float)sk::globals.width/sk::globals.height);
+	world->addCamera(camera);
+	return camera;
+}
+
+bool
+CreateTestScene(rw::World *world)
+{
+	rw::Clump *clump;
+	rw::StreamFile in;
+	const char *filename = "checker.dff";
+	if(in.open(filename, "rb") == NULL){
+		printf("couldn't open file\n");
+		return false;
+	}
+	if(!rw::findChunk(&in, rw::ID_CLUMP, NULL, NULL))
+		return false;
+	clump = rw::Clump::streamRead(&in);
+	in.close();
+	if(clump == nil)
+		return false;
+
+	rw::Clump *clone;
+	rw::Frame *clumpFrame;
+	rw::V3d pos;
+	float zOffset = 75.0f;
+
+	// Bottom panel
+	clumpFrame = clump->getFrame();
+	clumpFrame->rotate(&Xaxis, 90.0f, rw::COMBINEREPLACE);
+
+	pos.x = 0.0f;
+	pos.y = -25.0f;
+	pos.z = zOffset;
+	clumpFrame->translate(&pos, rw::COMBINEPOSTCONCAT);
+
+	// only need to add once
+	world->addClump(clump);
+
+	// Top panel
+	clone = clump->clone();
+	clumpFrame = clone->getFrame();
+	clumpFrame->rotate(&Xaxis, -90.0f, rw::COMBINEREPLACE);
+
+	pos.x = 0.0f;
+	pos.y = 25.0f;
+	pos.z = zOffset;
+	clumpFrame->translate(&pos, rw::COMBINEPOSTCONCAT);
+
+	// Left panel
+	clone = clump->clone();
+	clumpFrame = clone->getFrame();
+	clumpFrame->rotate(&Xaxis, 0.0f, rw::COMBINEREPLACE);
+	clumpFrame->rotate(&Yaxis, 90.0f, rw::COMBINEPOSTCONCAT);
+
+	pos.x = 25.0f;
+	pos.y = 0.0f;
+	pos.z = zOffset;
+	clumpFrame->translate(&pos, rw::COMBINEPOSTCONCAT);
+
+	// Right panel
+	clone = clump->clone();
+	clumpFrame = clone->getFrame();
+	clumpFrame->rotate(&Xaxis, 0.0f, rw::COMBINEREPLACE);
+	clumpFrame->rotate(&Yaxis, -90.0f, rw::COMBINEPOSTCONCAT);
+
+	pos.x = -25.0f;
+	pos.y = 0.0f;
+	pos.z = zOffset;
+	clumpFrame->translate(&pos, rw::COMBINEPOSTCONCAT);
+
+	// Back panel
+	clone = clump->clone();
+	clumpFrame = clone->getFrame();
+	clumpFrame->rotate(&Xaxis, 0.0f, rw::COMBINEREPLACE);
+
+	pos.x = 0.0f;
+	pos.y = 0.0f;
+	pos.z = zOffset + 25.0f;
+	clumpFrame->translate(&pos, rw::COMBINEPOSTCONCAT);
+
+	// BBox
+	pos.x = 25.0f;
+	pos.y = 25.0f;
+	pos.z = zOffset - 25.0f;
+	RoomBBox.initialize(&pos);
+	pos.x = -25.0f;
+	pos.y = -25.0f;
+	pos.z = zOffset + 25.0f;
+	RoomBBox.addPoint(&pos);
+
+	return 1;
+}
+
+void
+Initialize(void)
+{
+	sk::globals.windowtitle = "Lights example";
+	sk::globals.width = 1280;
+	sk::globals.height = 800;
+	sk::globals.quit = 0;
+}
+
+bool
+Initialize3D(void)
+{
+	if(!sk::InitRW())
+		return false;
+
+	World = CreateWorld();
+
+	BaseAmbientLight = CreateBaseAmbientLight();
+	AmbientLight = CreateAmbientLight();
+	DirectLight = CreateDirectLight();
+	PointLight = CreatePointLight();
+	SpotLight = CreateSpotLight();
+	SpotSoftLight = CreateSpotSoftLight();
+
+	Camera = CreateCamera(World);
+
+	CreateTestScene(World);
+
+	ImGui_ImplRW_Init();
+	ImGui::StyleColorsClassic();
+
+	return true;
+}
+
+void
+Terminate3D(void)
+{
+	FORLIST(lnk, World->clumps){
+		rw::Clump *clump = rw::Clump::fromWorld(lnk);
+		World->removeClump(clump);
+		clump->destroy();
+	}
+
+	if(Camera){
+		World->removeCamera(Camera);
+		sk::CameraDestroy(Camera);
+		Camera = nil;
+	}
+
+	LightsDestroy();
+
+	if(World){
+		World->destroy();
+		World = nil;
+	}
+
+	sk::TerminateRW();
+}
+
+bool
+attachPlugins(void)
+{
+	rw::ps2::registerPDSPlugin(40);
+	rw::ps2::registerPluginPDSPipes();
+
+	rw::registerMeshPlugin();
+	rw::registerNativeDataPlugin();
+	rw::registerAtomicRightsPlugin();
+	rw::registerMaterialRightsPlugin();
+	rw::xbox::registerVertexFormatPlugin();
+	rw::registerSkinPlugin();
+	rw::registerUserDataPlugin();
+	rw::registerHAnimPlugin();
+	rw::registerMatFXPlugin();
+	rw::registerUVAnimPlugin();
+	rw::ps2::registerADCPlugin();
+	return true;
+}
+
+void
+Gui(void)
+{
+//	ImGui::ShowDemoWindow(nil);
+
+	static bool showLightWindow = true;
+	ImGui::Begin("Lights", &showLightWindow);
+
+	ImGui::Checkbox("Light", &LightOn);
+	ImGui::Checkbox("Draw Light", &LightDrawOn);
+	if(ImGui::Checkbox("Base Ambient", &BaseAmbientLightOn)){
+		if(BaseAmbientLightOn){
+			if(BaseAmbientLight->world == nil)
+				World->addLight(BaseAmbientLight);
+		}else{
+			if(BaseAmbientLight->world)
+				World->removeLight(BaseAmbientLight);
+		}
+	}
+
+	ImGui::RadioButton("Ambient Light", &LightTypeIndex, 0);
+	ImGui::RadioButton("Point Light", &LightTypeIndex, 1);
+	ImGui::RadioButton("Directional Light", &LightTypeIndex, 2);
+	ImGui::RadioButton("Spot Light", &LightTypeIndex, 3);
+	ImGui::RadioButton("Soft Spot Light", &LightTypeIndex, 4);
+
+	ImGui::ColorEdit3("Color", (float*)&LightColor);
+	float radAngle = LightConeAngle/180.0f*M_PI;
+	ImGui::SliderAngle("Cone angle", &radAngle, 0.0f, 180.0f);
+	LightConeAngle = radAngle/M_PI*180.0f;
+	ImGui::SliderFloat("Radius", &LightRadius, 0.1f, 500.0f);
+
+	ImGui::End();
+}
+
+void
+Render(float timeDelta)
+{
+	Camera->clear(&BackgroundColor, rw::Camera::CLEARIMAGE|rw::Camera::CLEARZ);
+	Camera->beginUpdate();
+
+	ImGui_ImplRW_NewFrame(timeDelta);
+
+	World->render();
+
+	if(LightDrawOn && CurrentLight)
+		DrawCurrentLight();
+
+	Gui();
+
+	ImGui::EndFrame();
+	ImGui::Render();
+
+	ImGui_ImplRW_RenderDrawLists(ImGui::GetDrawData());
+	
+	Camera->endUpdate();
+	Camera->showRaster(0);
+}
+
+void
+Idle(float timeDelta)
+{
+	LightsUpdate();
+
+	Render(timeDelta);
+}
+
+int MouseX, MouseY;
+int MouseDeltaX, MouseDeltaY;
+int MouseButtons;
+
+int CtrlDown;
+
+bool RotateLight;
+bool TranslateLightXY;
+bool TranslateLightZ;
+
+void
+KeyUp(int key)
+{
+	switch(key){
+	case sk::KEY_LCTRL:
+	case sk::KEY_RCTRL:
+		CtrlDown = 0;
+		break;
+	}
+}
+
+void
+KeyDown(int key)
+{
+	switch(key){
+	case sk::KEY_LCTRL:
+	case sk::KEY_RCTRL:
+		CtrlDown = 1;
+		break;
+	case sk::KEY_ESC:
+		sk::globals.quit = 1;
+		break;
+	}
+}
+
+void
+MouseBtn(sk::MouseState *mouse)
+{
+	MouseButtons = mouse->buttons;
+	RotateLight = !CtrlDown && !!(MouseButtons&1);
+	TranslateLightXY = CtrlDown && !!(MouseButtons&1);
+	TranslateLightZ = CtrlDown && !!(MouseButtons&4);
+}
+
+void
+MouseMove(sk::MouseState *mouse)
+{
+	MouseDeltaX = mouse->posx - MouseX;
+	MouseDeltaY = mouse->posy - MouseY;
+	MouseX = mouse->posx;
+	MouseY = mouse->posy;
+
+	if(RotateLight)
+		LightRotate(-MouseDeltaX, MouseDeltaY);
+	if(TranslateLightXY)
+		LightTranslateXY(-MouseDeltaX*0.1f, -MouseDeltaY*0.1f);
+	if(TranslateLightZ)
+		LightTranslateZ(-MouseDeltaY*0.1f);
+}
+
+sk::EventStatus
+AppEventHandler(sk::Event e, void *param)
+{
+	using namespace sk;
+	Rect *r;
+	MouseState *ms;
+
+	ImGuiEventHandler(e, param);
+	ImGuiIO &io = ImGui::GetIO();
+
+	switch(e){
+	case INITIALIZE:
+		Initialize();
+		return EVENTPROCESSED;
+	case RWINITIALIZE:
+		return Initialize3D() ? EVENTPROCESSED : EVENTERROR;
+	case RWTERMINATE:
+		Terminate3D();
+		return EVENTPROCESSED;
+	case PLUGINATTACH:
+		return attachPlugins() ? EVENTPROCESSED : EVENTERROR;
+	case KEYDOWN:
+		KeyDown(*(int*)param);
+		return EVENTPROCESSED;
+	case KEYUP:
+		KeyUp(*(int*)param);
+		return EVENTPROCESSED;
+	case MOUSEBTN:
+		if(!io.WantCaptureMouse){
+			ms = (MouseState*)param;
+			MouseBtn(ms);
+		}else
+			MouseButtons = 0;
+		return EVENTPROCESSED;
+	case MOUSEMOVE:
+		MouseMove((MouseState*)param);
+		return EVENTPROCESSED;
+	case RESIZE:
+		r = (Rect*)param;
+		// TODO: register when we're minimized
+		if(r->w == 0) r->w = 1;
+		if(r->h == 0) r->h = 1;
+
+		sk::globals.width = r->w;
+		sk::globals.height = r->h;
+		if(::Camera){
+			sk::CameraSize(::Camera, r);
+			::Camera->setFOV(FOV, (float)sk::globals.width/sk::globals.height);
+		}
+		break;
+	case IDLE:
+		Idle(*(float*)param);
+		return EVENTPROCESSED;
+	}
+	return sk::EVENTNOTPROCESSED;
+}
diff --git a/tools/lights/main.h b/tools/lights/main.h
new file mode 100644
index 0000000..6358f2d
--- /dev/null
+++ b/tools/lights/main.h
@@ -0,0 +1,7 @@
+
+extern rw::World *World;
+extern rw::Camera *Camera;
+
+extern rw::V3d Xaxis;
+extern rw::V3d Yaxis;
+extern rw::V3d Zaxis;