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luaglue.c
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//
// 3d-glue.c
// Extension
//
// Created by Dave Hayden on 9/19/15.
// Copyright © 2015 Panic, Inc. All rights reserved.
//
#include <math.h>
#include "luaglue.h"
#include "render.h"
#include "mini3d.h"
#include "shape.h"
#include "imposter.h"
#include "scene.h"
#include "collision.h"
#include "texture.h"
#include "pattern.h"
#ifndef M_PI
#define M_PI 3.1415926535f
#endif
PlaydateAPI* pd = NULL;
static const lua_reg lib3DScene[];
static const lua_reg lib3DNode[];
static const lua_reg lib3DShape[];
static const lua_reg lib3DImposter[];
static const lua_reg lib3DPoint[];
static const lua_reg lib3DMatrix[];
static const lua_reg lib3DMath[];
static const lua_reg lib3DRenderer[];
#if ENABLE_TEXTURES
static const lua_reg lib3DTexture[];
#endif
#if ENABLE_CUSTOM_PATTERNS
static const lua_reg lib3DPattern[];
#endif
void register3D(PlaydateAPI* playdate)
{
pd = playdate;
const char* err;
if ( !pd->lua->registerClass("lib3d.scene", lib3DScene, NULL, 0, &err) )
pd->system->logToConsole("%s:%i: registerClass failed, %s", __FILE__, __LINE__, err);
if ( !pd->lua->registerClass("lib3d.scenenode", lib3DNode, NULL, 0, &err) )
pd->system->logToConsole("%s:%i: registerClass failed, %s", __FILE__, __LINE__, err);
if ( !pd->lua->registerClass("lib3d.shape", lib3DShape, NULL, 0, &err) )
pd->system->logToConsole("%s:%i: registerClass failed, %s", __FILE__, __LINE__, err);
if ( !pd->lua->registerClass("lib3d.imposter", lib3DImposter, NULL, 0, &err) )
pd->system->logToConsole("%s:%i: registerClass failed, %s", __FILE__, __LINE__, err);
if ( !pd->lua->registerClass("lib3d.point", lib3DPoint, NULL, 0, &err) )
pd->system->logToConsole("%s:%i: registerClass failed, %s", __FILE__, __LINE__, err);
if ( !pd->lua->registerClass("lib3d.matrix", lib3DMatrix, NULL, 0, &err) )
pd->system->logToConsole("%s:%i: registerClass failed, %s", __FILE__, __LINE__, err);
if ( !pd->lua->registerClass("lib3d.math", lib3DMath, NULL, 0, &err) )
pd->system->logToConsole("%s:%i: registerClass failed, %s", __FILE__, __LINE__, err);
if ( !pd->lua->registerClass("lib3d.renderer", lib3DRenderer, NULL, 0, &err) )
pd->system->logToConsole("%s:%i: registerClass failed, %s", __FILE__, __LINE__, err);
#if ENABLE_TEXTURES
if ( !pd->lua->registerClass("lib3d.texture", lib3DTexture, NULL, 0, &err) )
pd->system->logToConsole("%s:%i: registerClass failed, %s", __FILE__, __LINE__, err);
#endif
#if ENABLE_CUSTOM_PATTERNS
if ( !pd->lua->registerClass("lib3d.pattern", lib3DPattern, NULL, 0, &err) )
pd->system->logToConsole("%s:%i: registerClass failed, %s", __FILE__, __LINE__, err);
#endif
mini3d_setRealloc(pd->system->realloc);
}
static void* get3DObj(int n, char* type)
{
void* obj = pd->lua->getArgObject(n, type, NULL);
if ( obj == NULL )
pd->system->error("object of type %s not found at stack position %i", type, n);
return obj;
}
static Scene3D* getScene(int n) { return get3DObj(n, "lib3d.scene"); }
static Scene3DNode* getSceneNode(int n) { return get3DObj(n, "lib3d.scenenode"); }
static Shape3D* getShape(int n) { return get3DObj(n, "lib3d.shape"); }
static Imposter3D* getImposter(int n) { return get3DObj(n, "lib3d.imposter"); }
static Point3D* getPoint(int n) { return get3DObj(n, "lib3d.point"); }
static Vector3D* getVector(int n) { return get3DObj(n, "lib3d.point"); }
static Matrix3D* getMatrix(int n) { return get3DObj(n, "lib3d.matrix"); }
#if ENABLE_TEXTURES
static Texture* getTexture(int n) { return get3DObj(n, "lib3d.texture"); }
#endif
#if ENABLE_CUSTOM_PATTERNS
static PatternTable* getPatternTable(int n) { return get3DObj(n, "lib3d.pattern"); }
#endif
/// Scene
static int scene_new(lua_State* L)
{
Scene3D* scene = m3d_malloc(sizeof(Scene3D));
Scene3D_init(scene);
pd->lua->pushObject(scene, "lib3d.scene", 0);
return 1;
}
static int scene_gc(lua_State* L)
{
Scene3D* scene = getScene(1);
Scene3D_deinit(scene);
m3d_free(scene);
return 0;
}
static int scene_getRoot(lua_State* L)
{
Scene3D* scene = getScene(1);
pd->lua->pushObject(Scene3D_getRootNode(scene), "lib3d.scenenode", 0);
return 1;
}
#if ENABLE_INTERLACE
static uint8_t backbuff[LCD_ROWS * LCD_ROWSIZE];
static inline void
clear_backbuff_interlaced(void)
{
// FIXME: please rewrite this, it's bad
int step = getInterlaceEnabled() + 1;
int start = 0;
int ilace_enabled = getInterlaceEnabled();
int ilace = getInterlace();
for (size_t i = 0; i < LCD_ROWS; i ++)
{
if (!ilace_enabled || ENABLE_INTERLACE == 2 || (i >> INTERLACE_ROW_LGC) % INTERLACE_INTERVAL == ilace)
{
memset(backbuff + (LCD_ROWSIZE * i), 0, LCD_ROWSIZE);
}
}
}
#endif
static int _prefetch_zbuf(lua_State* L)
{
#if ENABLE_Z_BUFFER
prefetch_zbuf();
#endif
return 0;
}
static int scene_draw(lua_State* L)
{
Scene3D* scene = getScene(1);
#if ENABLE_TEXTURES && TEXTURE_PERSPECTIVE_MAPPING && PRECOMPUTE_PROJECTION
precomputeProjectionTable();
#endif
#if !ENABLE_INTERLACE
Scene3D_draw(scene, pd->graphics->getFrame(), LCD_ROWSIZE);
pd->graphics->markUpdatedRows(0, LCD_ROWS-1); // XXX
#else
if (getInterlaceEnabled())
{
#if INTERLACE_INTERVAL <= 2
setInterlace(!getInterlace());
#else
setInterlace((getInterlace()+1)%INTERLACE_INTERVAL);
#endif
clear_backbuff_interlaced();
Scene3D_draw(scene, &backbuff[0], LCD_ROWSIZE);
}
else
{
clear_backbuff_interlaced();
Scene3D_draw(scene, &backbuff[0], LCD_ROWSIZE);
}
memcpy(pd->graphics->getFrame(), backbuff, LCD_ROWS * LCD_ROWSIZE);
pd->graphics->markUpdatedRows(0, LCD_ROWS-1);
#endif
return 0;
}
#if ENABLE_Z_BUFFER
static int draw_zbuff(lua_State* L)
{
render_zbuff(pd->graphics->getFrame(), LCD_ROWSIZE);
pd->graphics->markUpdatedRows(0, LCD_ROWS-1); // XXX
return 0;
}
#endif
static int scene_drawNode(lua_State* L)
{
Scene3D* scene = getScene(1);
Scene3DNode* node = getSceneNode(2);
Scene3D_drawNode(scene, node, pd->graphics->getFrame(), LCD_ROWSIZE);
pd->graphics->markUpdatedRows(0, LCD_ROWS-1); // XXX
return 0;
}
static int scene_setLight(lua_State* L)
{
Scene3D* scene = getScene(1);
float x = pd->lua->getArgFloat(2);
float y = pd->lua->getArgFloat(3);
float z = pd->lua->getArgFloat(4);
Scene3D_setGlobalLight(scene, Vector3DMake(x, y, z));
return 0;
}
static int scene_setCenter(lua_State* L)
{
Scene3D* scene = getScene(1);
float x = pd->lua->getArgFloat(2);
float y = pd->lua->getArgFloat(3);
Scene3D_setCenter(scene, x, y);
return 0;
}
static Point3D cameraOrigin = (Point3D){ 0, -1, 1 };
static Point3D cameraLookat = (Point3D){ 0, 0, 0 };
static float cameraScale = 1.0f;
static Vector3D cameraUp = (Vector3D){ 0, 0, 1 };
static int scene_setCameraOrigin(lua_State* L)
{
Scene3D* scene = getScene(1);
cameraOrigin.x = pd->lua->getArgFloat(2);
cameraOrigin.y = pd->lua->getArgFloat(3);
cameraOrigin.z = pd->lua->getArgFloat(4);
Scene3D_setCamera(scene, cameraOrigin, cameraLookat, cameraScale, cameraUp);
return 0;
}
static int scene_getCameraOrigin(lua_State* L)
{
Scene3D* scene = getScene(1);
pd->lua->pushFloat(cameraOrigin.x);
pd->lua->pushFloat(cameraOrigin.y);
pd->lua->pushFloat(cameraOrigin.z);
return 3;
}
static int scene_setCameraTarget(lua_State* L)
{
Scene3D* scene = getScene(1);
cameraLookat.x = pd->lua->getArgFloat(2);
cameraLookat.y = pd->lua->getArgFloat(3);
cameraLookat.z = pd->lua->getArgFloat(4);
Scene3D_setCamera(scene, cameraOrigin, cameraLookat, cameraScale, cameraUp);
return 0;
}
static int scene_getCameraTarget(lua_State* L)
{
Scene3D* scene = getScene(1);
pd->lua->pushFloat(cameraLookat.x);
pd->lua->pushFloat(cameraLookat.y);
pd->lua->pushFloat(cameraLookat.z);
return 3;
}
static int scene_setCameraScale(lua_State* L)
{
Scene3D* scene = getScene(1);
cameraScale = pd->lua->getArgFloat(2);
Scene3D_setCamera(scene, cameraOrigin, cameraLookat, cameraScale, cameraUp);
return 0;
}
static int scene_getCameraScale(lua_State* L)
{
Scene3D* scene = getScene(1);
pd->lua->pushFloat(cameraScale);
return 1;
}
static int scene_setCameraUp(lua_State* L)
{
Scene3D* scene = getScene(1);
cameraUp.dx = pd->lua->getArgFloat(2);
cameraUp.dy = pd->lua->getArgFloat(3);
cameraUp.dz = pd->lua->getArgFloat(4);
Scene3D_setCamera(scene, cameraOrigin, cameraLookat, cameraScale, cameraUp);
return 0;
}
static int scene_getCameraUp(lua_State* L)
{
Scene3D* scene = getScene(1);
pd->lua->pushFloat(cameraUp.dx);
pd->lua->pushFloat(cameraUp.dy);
pd->lua->pushFloat(cameraUp.dz);
return 3;
}
static const lua_reg lib3DScene[] =
{
{ "__gc", scene_gc },
{ "new", scene_new },
{ "draw", scene_draw },
#if ENABLE_Z_BUFFER
{ "drawZBuff", draw_zbuff },
#endif
{ "drawNode", scene_drawNode },
{ "getRootNode", scene_getRoot },
{ "setLight", scene_setLight },
{ "setCenter", scene_setCenter },
{ "setCameraOrigin", scene_setCameraOrigin },
{ "setCameraScale", scene_setCameraScale },
{ "setCameraTarget", scene_setCameraTarget },
{ "setCameraUp", scene_setCameraUp },
{ "getCameraOrigin", scene_getCameraOrigin },
{ "getCameraScale", scene_getCameraScale },
{ "getCameraTarget", scene_getCameraTarget },
{ "getCameraUp", scene_getCameraUp },
{ "prefetchZBuff", _prefetch_zbuf},
{ NULL, NULL }
};
/// Node
static int node_gc(lua_State* L)
{
// XXX - release shapes
return 0;
}
static int node_addShape(lua_State* L)
{
Scene3DNode* node = getSceneNode(1);
Shape3D* shape = getShape(2);
Matrix3D* m = pd->lua->getArgObject(3, "lib3d.matrix", NULL);
if ( m != NULL )
Scene3DNode_addShapeWithTransform(node, shape, *m);
else if ( pd->lua->getArgCount() > 2 )
{
Vector3D v = { 0, 0, 0 };
v.dx = pd->lua->getArgFloat(3);
v.dy = pd->lua->getArgFloat(4);
v.dz = pd->lua->getArgFloat(5);
Scene3DNode_addShapeWithOffset(node, shape, v);
}
else
Scene3DNode_addShape(node, shape);
//pd->lua->retainObject(shapeobj);
return 0;
}
static int node_addImposter(lua_State* L)
{
Scene3DNode* node = getSceneNode(1);
Imposter3D* imposter = getImposter(2);
Matrix3D* m = pd->lua->getArgObject(3, "lib3d.matrix", NULL);
if ( m != NULL )
Scene3DNode_addImposterWithTransform(node, imposter, *m);
// TODO: Scene3DNode_addImposterWithOffset
else
Scene3DNode_addImposter(node, imposter);
return 0;
}
static int node_makeChildNode(lua_State* L)
{
Scene3DNode* node = getSceneNode(1);
Scene3DNode* scene = Scene3DNode_newChild(node);
pd->lua->pushObject(scene, "lib3d.scenenode", 0);
return 1;
}
static int node_setTransform(lua_State* L)
{
Scene3DNode* node = getSceneNode(1);
Matrix3D* xform = getMatrix(2);
Scene3DNode_setTransform(node, xform);
return 0;
}
static int node_addTransform(lua_State* L)
{
Scene3DNode* node = getSceneNode(1);
Matrix3D* xform = getMatrix(2);
Scene3DNode_addTransform(node, xform);
return 0;
}
static int node_translateBy(lua_State* L)
{
Scene3DNode* node = getSceneNode(1);
Matrix3D xform = identityMatrix;
xform.dx = pd->lua->getArgFloat(2);
xform.dy = pd->lua->getArgFloat(3);
xform.dz = pd->lua->getArgFloat(4);
Scene3DNode_addTransform(node, &xform);
return 0;
}
static int node_scaleBy(lua_State* L)
{
Scene3DNode* node = getSceneNode(1);
Matrix3D xform = node->transform;
float sx, sy, sz;
if ( pd->lua->getArgCount() > 2 )
{
sx = pd->lua->getArgFloat(2);
sy = pd->lua->getArgFloat(3);
sz = pd->lua->getArgFloat(4);
}
else
sx = sy = sz = pd->lua->getArgFloat(2);
xform.isIdentity = 0;
xform.m[0][0] *= sx;
xform.m[1][0] *= sx;
xform.m[2][0] *= sx;
xform.m[0][1] *= sy;
xform.m[1][1] *= sy;
xform.m[2][1] *= sy;
xform.m[0][2] *= sz;
xform.m[1][2] *= sz;
xform.m[2][2] *= sz;
xform.dx *= sx;
xform.dy *= sy;
xform.dz *= sz;
xform.inverting = (sx * sy * sz < 0);
Scene3DNode_setTransform(node, &xform);
return 0;
}
static int node_setColorBias(lua_State* L)
{
Scene3DNode* node = getSceneNode(1);
Scene3DNode_setColorBias(node, pd->lua->getArgFloat(2));
return 0;
}
static int node_setFilled(lua_State* L)
{
Scene3DNode* node = getSceneNode(1);
int flag = pd->lua->getArgBool(2);
RenderStyle style = Scene3DNode_getRenderStyle(node);
if ( flag )
style |= kRenderFilled;
else
style &= ~kRenderFilled;
Scene3DNode_setRenderStyle(node, style);
return 0;
}
static int node_setWireframeMode(lua_State* L)
{
Scene3DNode* node = getSceneNode(1);
int mode = pd->lua->getArgInt(2);
RenderStyle style = Scene3DNode_getRenderStyle(node);
if ( mode > 0 )
{
style |= kRenderWireframe;
if ( mode == 1 )
style &= ~kRenderWireframeBack;
else
style |= kRenderWireframeBack;
}
else
style &= ~kRenderWireframe;
Scene3DNode_setRenderStyle(node, style);
return 0;
}
static int node_setWireframeColor(lua_State* L)
{
Scene3DNode* node = getSceneNode(1);
int color = pd->lua->getArgInt(2);
RenderStyle style = Scene3DNode_getRenderStyle(node);
if ( color )
style |= kRenderWireframeWhite;
else
style &= ~kRenderWireframeWhite;
Scene3DNode_setRenderStyle(node, style);
return 0;
}
static int node_setVisible(lua_State* L)
{
Scene3DNode* node = getSceneNode(1);
Scene3DNode_setVisible(node, pd->lua->getArgBool(2));
return 0;
}
static const lua_reg lib3DNode[] =
{
{ "__gc", node_gc },
{ "addChildNode", node_makeChildNode },
{ "addShape", node_addShape },
{ "addImposter", node_addImposter },
{ "addTransform", node_addTransform },
{ "setTransform", node_setTransform },
{ "translateBy", node_translateBy },
{ "scaleBy", node_scaleBy },
{ "setColorBias", node_setColorBias },
{ "setFilled", node_setFilled },
{ "setWireframeMode", node_setWireframeMode },
{ "setWireframeColor", node_setWireframeColor },
{ "setVisible", node_setVisible },
{ NULL, NULL }
};
/// Shape
static int shape_new(lua_State* L)
{
Shape3D* shape = m3d_malloc(sizeof(Shape3D));
Shape3D_init(shape);
Shape3D_retain(shape);
pd->lua->pushObject(shape, "lib3d.shape", 0);
return 1;
}
static int shape_gc(lua_State* L)
{
Shape3D* shape = getShape(1);
Shape3D_release(shape);
return 0;
}
static int shape_addFace(lua_State* L)
{
Shape3D* shape = getShape(1);
Point3D* a = getPoint(2);
Point3D* b = getPoint(3);
Point3D* c = getPoint(4);
Point3D* d = NULL;
const char* type;
float color = 0;
if ( pd->lua->getArgType(5, &type) == kTypeObject && strcmp(type, "lib3d.point") == 0 )
{
d = getPoint(5);
color = pd->lua->getArgFloat(6);
}
else
color = pd->lua->getArgFloat(5);
int face_idx = Shape3D_addFace(shape, a, b, c, d, color);
pd->lua->pushInt(face_idx);
return 1;
}
#if ENABLE_TEXTURES
static int shape_setFaceTextureMap(lua_State* L)
{
Shape3D* shape = getShape(1);
int face_idx = pd->lua->getArgInt(2);
float u1 = pd->lua->getArgFloat(3);
float v1 = pd->lua->getArgFloat(4);
float u2 = pd->lua->getArgFloat(5);
float v2 = pd->lua->getArgFloat(6);
float u3 = pd->lua->getArgFloat(7);
float v3 = pd->lua->getArgFloat(8);
// FIXME: use only if these are provided
float u4 = pd->lua->getArgFloat(9);
float v4 = pd->lua->getArgFloat(10);
Shape3D_setFaceTextureMap(shape, face_idx,
(Point2D){u1, v1}, (Point2D){u2, v2}, (Point2D){u3, v3}, (Point2D){u4, v4});
return 0;
}
#if ENABLE_TEXTURES_GREYSCALE
static int shape_setFaceLighting(lua_State* L)
{
Shape3D* shape = getShape(1);
int face_idx = pd->lua->getArgInt(2);
float l = pd->lua->getArgFloat(3);
Shape3D_setFaceLighting(shape, face_idx, l);
return 0;
}
#endif
#endif
#if ENABLE_CUSTOM_PATTERNS
static int shape_setPattern(lua_State* L)
{
Shape3D* shape = getShape(1);
PatternTable* pt = NULL;
if (pd->lua->getArgType(2, NULL) != kTypeNil)
{
pt = getPatternTable(2);
}
Shape3D_setPattern(shape, pt);
return 0;
}
#endif
static int shape_setClosed(lua_State* L)
{
Shape3D_setClosed(getShape(1), pd->lua->getArgBool(2));
return 0;
}
static int shape_setFaceDoubleSided(lua_State* L)
{
Shape3D_setFaceDoubleSided(getShape(1), pd->lua->getArgInt(2), pd->lua->getArgBool(3));
return 0;
}
static int shape_collideSphere(lua_State* L)
{
Shape3D* shape = getShape(1);
Point3D* centre = getPoint(2);
float radius = pd->lua->getArgFloat(3);
Vector3D o_normal;
float dist;
float best_collision_distance = radius + 1;
Vector3D best_normal;
int best_face_idx;
int collision_occurred = 0;
for (int i = 0; i < shape->nFaces; ++i)
{
Face3D* face = &shape->faces[i];
Point3D* p1 = &shape->points[face->p1];
Point3D* p2 = &shape->points[face->p2];
Point3D* p3 = &shape->points[face->p3];
if (test_sphere_triangle(centre, radius, p1, p2, p3, &o_normal, &dist) && dist < best_collision_distance)
{
collision_occurred = 1;
best_collision_distance = dist;
best_face_idx = i;
best_normal = o_normal;
}
if (face->p4 != 0xffff)
{
Point3D* p4 = &shape->points[face->p4];
if (test_sphere_triangle(centre, radius, p1, p3, p4, &o_normal, &dist) && dist < best_collision_distance)
{
collision_occurred = 1;
best_collision_distance = dist;
best_face_idx = i;
best_normal = o_normal;
}
}
}
if (collision_occurred)
{
pd->lua->pushBool(1);
Point3D* normal = m3d_malloc(sizeof(Point3D));
memcpy(normal, &best_normal, sizeof(Vector3D));
pd->lua->pushObject(normal, "lib3d.point", 0);
pd->lua->pushFloat(best_collision_distance);
pd->lua->pushInt(best_face_idx);
return 4;
}
else
{
pd->lua->pushBool(0);
return 1;
}
}
#if ENABLE_TEXTURES
// gets texture, and refs it too.
// remember to Texture_unref if not null!
static Texture* getArgsTexture(lua_State* L, int primarg, int secarg, const char** outerr)
{
int greyscale = pd->lua->getArgBool(secarg);
const char* typename;
switch (pd->lua->getArgType(primarg, &typename))
{
case kTypeNil:
return NULL;
case kTypeString:
return Texture_loadFromPath(pd->lua->getArgString(primarg), greyscale, outerr);
case kTypeObject:
if (strcmp(typename, "lib3d.texture") == 0)
{
return Texture_ref(getTexture(primarg));
}
else
{
LCDBitmap* bitmap = pd->lua->getBitmap(primarg);
if (!bitmap)
{
*outerr = "must be either LCDBitmap or lib3d.texture";
return NULL;
}
return Texture_fromLCDBitmap(bitmap);
}
default:
*outerr = "unrecognized texture type";
return NULL;
}
}
static int shape_setTexture(lua_State* L)
{
Shape3D* shape = getShape(1);
const char* outerr = NULL;
Texture* t = getArgsTexture(L, 2, 3, &outerr);
if (outerr != NULL)
{
pd->system->error("%s", outerr);
return 0;
}
Shape3D_setTexture(shape, t);
if (t) Texture_unref(t);
return 0;
}
#endif
#if ENABLE_POLYGON_SCANLINING
static int shape_setScanlining(lua_State* L)
{
if (pd->lua->getArgCount() != 3) {
pd->system->error("Wrong number of arguments to shape:setScanlining; 3 expected");
}
Shape3D* shape = getShape(1);
const char* type = pd->lua->getArgString(2);
uint32_t scanfill = pd->lua->getArgInt(3);
ScanlineFill fill;
fill.fill = scanfill;
fill.select = kScanlineOdd;
if (!strcmp(type, "all")) fill.select = kScanlineAll;
if (!strcmp(type, "even")) fill.select = kScanlineEven;
if (!strcmp(type, "odd")) fill.select = kScanlineOdd;
Shape3D_setScanlining(shape, fill);
return 0;
}
#endif
#if ENABLE_ORDERING_TABLE
static int shape_setOrderTableSize(lua_State* L)
{
Shape3D_setOrderTableSize(getShape(1), (size_t)MAX(pd->lua->getArgInt(2), 0));
return 0;
}
#endif
static const lua_reg lib3DShape[] =
{
{ "new", shape_new },
{ "__gc", shape_gc },
{ "addFace", shape_addFace },
{ "setClosed", shape_setClosed },
{ "collidesSphere", shape_collideSphere },
{ "setFaceDoubleSided", shape_setFaceDoubleSided },
#if ENABLE_TEXTURES
{ "setTexture", shape_setTexture },
{ "setFaceTextureMap", shape_setFaceTextureMap},
#if ENABLE_TEXTURES_GREYSCALE
{ "setFaceLighting", shape_setFaceLighting},
#endif
#endif
#if ENABLE_POLYGON_SCANLINING
{ "setScanlining", shape_setScanlining },
#endif
#if ENABLE_CUSTOM_PATTERNS
{ "setPattern", shape_setPattern },
#endif
#if ENABLE_ORDERING_TABLE
{ "setOrderTableSize", shape_setOrderTableSize, },
#endif
{ NULL, NULL }
};
/// Imposter
static int imposter_new(lua_State* L)
{
Imposter3D* imposter = m3d_malloc(sizeof(Imposter3D));
Imposter3D_init(imposter);
Imposter3D_retain(imposter);
pd->lua->pushObject(imposter, "lib3d.imposter", 0);
return 1;
}
static int imposter_gc(lua_State* L)
{
Imposter3D* imposter = getImposter(1);
Imposter3D_release(imposter);
return 0;
}
static int imposter_setPosition(lua_State* L)
{
Imposter3D* imposter = getImposter(1);
Point3D* point = getPoint(2);
Imposter3D_setPosition(imposter, point);
return 0;
}
static int imposter_setRectangle(lua_State* L)
{
Imposter3D* imposter = getImposter(1);
float x1 = pd->lua->getArgFloat(2);
float y1 = pd->lua->getArgFloat(3);
float x2 = pd->lua->getArgFloat(4);
float y2 = pd->lua->getArgFloat(5);
Imposter3D_setRectangle(imposter, x1, y1, x2, y2);
return 0;
}
static int imposter_setZOffsets(lua_State* L)
{
Imposter3D* imposter = getImposter(1);
float z1 = pd->lua->getArgFloat(2);
float z2 = pd->lua->getArgFloat(3);
float z3 = pd->lua->getArgFloat(4);
float z4 = pd->lua->getArgFloat(5);
Imposter3D_setZOffsets(imposter, z1, z2, z3, z4);
return 0;
}
#if ENABLE_TEXTURES
static int imposter_setBitmap(lua_State* L)
{
Imposter3D* imposter = getImposter(1);
const char* outerr = NULL;
Texture* t = getArgsTexture(L, 2, 3, &outerr);
if (outerr != NULL)
{
pd->system->error("%s", outerr);
}
Imposter3D_setBitmap(imposter, t);
if (t) Texture_unref(t);
return 0;
}
#if ENABLE_TEXTURES_GREYSCALE
static int imposter_setLighting(lua_State* L)
{
Imposter3D* imposter = getImposter(1);
float lighting = pd->lua->getArgFloat(2);
Imposter3D_setLighting(imposter, lighting);
return 0;
}
#endif
#endif
#if ENABLE_CUSTOM_PATTERNS
static int imposter_setPattern(lua_State* L)
{
Imposter3D* imposter = getImposter(1);
PatternTable* pt = NULL;
if (pd->lua->getArgType(2, NULL) != kTypeNil)
{
pt = getPatternTable(2);
}
Imposter3D_setPattern(imposter, pt);
return 0;
}
#endif
static const lua_reg lib3DImposter[] =
{
{ "new", imposter_new },
{ "__gc", imposter_gc },
{ "setPosition", imposter_setPosition },
{ "setRectangle", imposter_setRectangle },
{ "setZOffsets", imposter_setZOffsets },
#if ENABLE_TEXTURES
{ "setTexture", imposter_setBitmap },
#if ENABLE_TEXTURES_GREYSCALE
{ "setLighting", imposter_setLighting },
#endif
#endif
#if ENABLE_CUSTOM_PATTERNS
{ "setPattern", imposter_setPattern},
#endif
{ NULL, NULL }
};
/// Point
static int point_new(lua_State* L)
{
Point3D* p = m3d_malloc(sizeof(Point3D));
p->x = pd->lua->getArgFloat(1);
p->y = pd->lua->getArgFloat(2);
p->z = pd->lua->getArgFloat(3);
pd->lua->pushObject(p, "lib3d.point", 0);
return 1;
}
static int point_gc(lua_State* L)
{
Point3D* p = getPoint(1);
m3d_free(p);
return 0;
}
static int point_index(lua_State* L)
{
if (pd->lua->indexMetatable())
{
return 1;
}
Point3D* p = getPoint(1);
const char* arg = pd->lua->getArgString(2);
if ( strcmp(arg, "x") == 0 )
pd->lua->pushFloat(p->x);
else if ( strcmp(arg, "y") == 0 )
pd->lua->pushFloat(p->y);
else if ( strcmp(arg, "z") == 0 )
pd->lua->pushFloat(p->z);
else
return 0;
return 1;
}
static int point_newindex(lua_State* L)
{
Point3D* p = getPoint(1);