add camera example
This commit is contained in:
aap
504
tools/camera/main.cpp
Normal file
504
tools/camera/main.cpp
Normal file
@ -0,0 +1,504 @@
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#include <rw.h>
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#include <skeleton.h>
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#include <assert.h>
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#include "viewer.h"
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#include "camexamp.h"
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rw::V3d zero = { 0.0f, 0.0f, 0.0f };
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rw::EngineOpenParams engineOpenParams;
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float FOV = 70.0f;
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rw::RGBA ForegroundColor = { 200, 200, 200, 255 };
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rw::RGBA BackgroundColor = { 64, 64, 64, 0 };
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rw::RGBA BackgroundColorSub = { 74, 74, 74, 0 };
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rw::World *World;
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rw::Charset *Charset;
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rw::V3d Xaxis = { 1.0f, 0.0, 0.0f };
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rw::V3d Yaxis = { 0.0f, 1.0, 0.0f };
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rw::V3d Zaxis = { 0.0f, 0.0, 1.0f };
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float TimeDelta;
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rw::Clump *Clump;
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rw::World*
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CreateWorld(void)
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{
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rw::BBox bb;
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bb.inf.x = bb.inf.y = bb.inf.z = -100.0f;
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bb.sup.x = bb.sup.y = bb.sup.z = 100.0f;
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return rw::World::create(&bb);
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}
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void
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LightsCreate(rw::World *world)
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{
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rw::Light *light = rw::Light::create(rw::Light::AMBIENT);
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assert(light);
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World->addLight(light);
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light = rw::Light::create(rw::Light::DIRECTIONAL);
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assert(light);
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rw::Frame *frame = rw::Frame::create();
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assert(frame);
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frame->rotate(&Xaxis, 30.0f, rw::COMBINEREPLACE);
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frame->rotate(&Yaxis, 30.0f, rw::COMBINEPOSTCONCAT);
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light->setFrame(frame);
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World->addLight(light);
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}
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rw::Clump*
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ClumpCreate(rw::World *world)
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{
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rw::Clump *clump;
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rw::StreamFile in;
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rw::Image::setSearchPath("files/clump/");
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const char *filename = "files/clump.dff";
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if(in.open(filename, "rb") == NULL){
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printf("couldn't open file\n");
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return nil;
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}
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if(!rw::findChunk(&in, rw::ID_CLUMP, NULL, NULL))
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return nil;
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clump = rw::Clump::streamRead(&in);
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in.close();
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if(clump == nil)
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return nil;
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rw::Frame *frame = clump->getFrame();
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rw::V3d pos = { 0.0f, 0.0f, 8.0f };
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frame->translate(&pos, rw::COMBINEREPLACE);
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World->addClump(clump);
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return clump;
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}
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void
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ClumpRotate(rw::Clump *clump, rw::Camera *camera, float xAngle, float yAngle)
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{
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rw::Matrix *cameraMatrix = &camera->getFrame()->matrix;
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rw::Frame *clumpFrame = clump->getFrame();
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rw::V3d pos = clumpFrame->matrix.pos;
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pos = rw::scale(pos, -1.0f);
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clumpFrame->translate(&pos, rw::COMBINEPOSTCONCAT);
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clumpFrame->rotate(&cameraMatrix->up, xAngle, rw::COMBINEPOSTCONCAT);
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clumpFrame->rotate(&cameraMatrix->right, yAngle, rw::COMBINEPOSTCONCAT);
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pos = rw::scale(pos, -1.0f);
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clumpFrame->translate(&pos, rw::COMBINEPOSTCONCAT);
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}
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void
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ClumpTranslate(rw::Clump *clump, rw::Camera *camera, float xDelta, float yDelta)
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{
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rw::Matrix *cameraMatrix = &camera->getFrame()->matrix;
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rw::Frame *clumpFrame = clump->getFrame();
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rw::V3d deltaX = rw::scale(cameraMatrix->right, xDelta);
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rw::V3d deltaZ = rw::scale(cameraMatrix->at, yDelta);
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rw::V3d delta = rw::add(deltaX, deltaZ);
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clumpFrame->translate(&delta, rw::COMBINEPOSTCONCAT);
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}
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void
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ClumpSetPosition(rw::Clump *clump, rw::V3d *position)
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{
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clump->getFrame()->translate(position, rw::COMBINEREPLACE);
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}
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void
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Initialize(void)
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{
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sk::globals.windowtitle = "Camera example";
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sk::globals.width = 1280;
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sk::globals.height = 800;
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sk::globals.quit = 0;
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}
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bool
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Initialize3D(void)
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{
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if(!sk::InitRW())
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return false;
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Charset = rw::Charset::create(&ForegroundColor, &BackgroundColor);
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World = CreateWorld();
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CamerasCreate(World);
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LightsCreate(World);
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Clump = ClumpCreate(World);
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rw::SetRenderState(rw::CULLMODE, rw::CULLBACK);
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rw::SetRenderState(rw::ZTESTENABLE, 1);
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rw::SetRenderState(rw::ZWRITEENABLE, 1);
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ImGui_ImplRW_Init();
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ImGui::StyleColorsClassic();
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rw::Rect r;
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r.x = 0;
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r.y = 0;
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r.w = sk::globals.width;
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r.h = sk::globals.height;
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CameraSizeUpdate(&r, 0.5f, 4.0f/3.0f);
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return true;
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}
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void
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DestroyLight(rw::Light *light, rw::World *world)
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{
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world->removeLight(light);
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rw::Frame *frame = light->getFrame();
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if(frame){
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light->setFrame(nil);
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frame->destroy();
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}
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light->destroy();
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}
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void
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Terminate3D(void)
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{
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if(Clump){
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World->removeClump(Clump);
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Clump->destroy();
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Clump = nil;
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}
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FORLIST(lnk, World->globalLights){
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rw::Light *light = rw::Light::fromWorld(lnk);
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DestroyLight(light, World);
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}
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FORLIST(lnk, World->localLights){
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rw::Light *light = rw::Light::fromWorld(lnk);
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DestroyLight(light, World);
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}
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CamerasDestroy(World);
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if(World){
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World->destroy();
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World = nil;
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}
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if(Charset){
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Charset->destroy();
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Charset = nil;
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}
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sk::TerminateRW();
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}
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bool
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attachPlugins(void)
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{
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rw::ps2::registerPDSPlugin(40);
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rw::ps2::registerPluginPDSPipes();
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rw::registerMeshPlugin();
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rw::registerNativeDataPlugin();
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rw::registerAtomicRightsPlugin();
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rw::registerMaterialRightsPlugin();
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rw::xbox::registerVertexFormatPlugin();
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rw::registerSkinPlugin();
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rw::registerUserDataPlugin();
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rw::registerHAnimPlugin();
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rw::registerMatFXPlugin();
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rw::registerUVAnimPlugin();
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rw::ps2::registerADCPlugin();
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return true;
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}
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void
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DisplayOnScreenInfo(void)
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{
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char str[256];
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sprintf(str, "View window (%.2f, %.2f)", SubCameraData.viewWindow.x, SubCameraData.viewWindow.y);
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Charset->print(str, 100, 100, 0);
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sprintf(str, "View offset (%.2f, %.2f)", SubCameraData.offset.x, SubCameraData.offset.y);
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Charset->print(str, 100, 120, 0);
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}
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void
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ResetCameraAndClump(void)
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{
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SubCameraData.nearClipPlane = 0.3f;
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SubCameraData.farClipPlane = 5.0f;
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SubCameraData.projection = rw::Camera::PERSPECTIVE;
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SubCameraData.offset.x = 0.0f;
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SubCameraData.offset.y = 0.0f;
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SubCameraData.viewWindow.x = 0.5f;
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SubCameraData.viewWindow.y = 0.38f;
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CameraSetData(&SubCameraData, ALL);
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ProjectionIndex = 0;
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rw::V3d position = { 3.0f, 0.0f, 8.0f };
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rw::V3d point = { 0.0f, 0.0f, 8.0f };
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ViewerSetPosition(SubCameraData.camera, &position);
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ViewerRotate(SubCamera, -90.0f, 0.0f);
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ClumpSetPosition(Clump, &point);
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}
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void
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Gui(void)
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{
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static bool showCameraWindow = true;
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ImGui::Begin("Camera", &showCameraWindow);
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ImGui::RadioButton("Main camera", &CameraSelected, 0);
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ImGui::RadioButton("Sub camera", &CameraSelected, 1);
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if(ImGui::RadioButton("Perspective", &ProjectionIndex, 0))
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ProjectionCallback();
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if(ImGui::RadioButton("Parallel", &ProjectionIndex, 1))
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ProjectionCallback();
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if(ImGui::SliderFloat("Near clip-plane", &SubCameraData.nearClipPlane, 0.1f, SubCameraData.farClipPlane-0.1f))
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ClipPlaneCallback();
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if(ImGui::SliderFloat("Far clip-plane", &SubCameraData.farClipPlane, SubCameraData.nearClipPlane+0.1f, 20.0f))
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ClipPlaneCallback();
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if(ImGui::Button("Reset"))
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ResetCameraAndClump();
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ImGui::End();
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}
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void
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MainCameraRender(rw::Camera *camera)
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{
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RenderTextureCamera(&BackgroundColorSub, rw::Camera::CLEARIMAGE|rw::Camera::CLEARZ, World);
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camera->clear(&BackgroundColor, rw::Camera::CLEARIMAGE|rw::Camera::CLEARZ);
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camera->beginUpdate();
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ImGui_ImplRW_NewFrame(TimeDelta);
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World->render();
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DrawCameraViewplaneTexture(&SubCameraData);
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DrawCameraFrustum(&SubCameraData);
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DisplayOnScreenInfo();
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Gui();
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ImGui::EndFrame();
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ImGui::Render();
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camera->endUpdate();
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RenderSubCamera(&BackgroundColorSub, rw::Camera::CLEARIMAGE|rw::Camera::CLEARZ, World);
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}
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void
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SubCameraRender(rw::Camera *camera)
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{
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camera->clear(&BackgroundColor, rw::Camera::CLEARIMAGE|rw::Camera::CLEARZ);
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camera->beginUpdate();
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ImGui_ImplRW_NewFrame(TimeDelta);
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World->render();
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DisplayOnScreenInfo();
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Gui();
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ImGui::EndFrame();
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ImGui::Render();
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camera->endUpdate();
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}
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void
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Render(void)
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{
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rw::Camera *camera;
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SubCameraMiniViewSelect(CameraSelected == 0);
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switch(CameraSelected){
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default:
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case 0:
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camera = MainCamera;
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MainCameraRender(camera);
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break;
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case 1:
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camera = SubCamera;
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SubCameraRender(camera);
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break;
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}
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camera->showRaster(0);
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}
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void
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Idle(float timeDelta)
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{
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TimeDelta = timeDelta;
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Render();
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}
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int MouseX, MouseY;
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int MouseDeltaX, MouseDeltaY;
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int MouseButtons;
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bool RotateClump;
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bool TranslateClump;
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bool RotateCamera;
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bool TranslateCamera;
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bool ViewXWindow;
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bool ViewYWindow;
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bool ViewXOffset;
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bool ViewYOffset;
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bool Ctrl, Alt, Shift;
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void
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KeyUp(int key)
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{
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switch(key){
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case sk::KEY_LCTRL:
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case sk::KEY_RCTRL:
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Ctrl = false;
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break;
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case sk::KEY_LALT:
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case sk::KEY_RALT:
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Alt = false;
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break;
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case sk::KEY_LSHIFT:
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case sk::KEY_RSHIFT:
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Shift = false;
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break;
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}
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}
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void
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KeyDown(int key)
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{
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switch(key){
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case sk::KEY_LCTRL:
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case sk::KEY_RCTRL:
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Ctrl = true;
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break;
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case sk::KEY_LALT:
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case sk::KEY_RALT:
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Alt = true;
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break;
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case sk::KEY_LSHIFT:
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case sk::KEY_RSHIFT:
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Shift = true;
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break;
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case sk::KEY_ESC:
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sk::globals.quit = 1;
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break;
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}
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}
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void
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MouseBtn(sk::MouseState *mouse)
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{
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MouseButtons = mouse->buttons;
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RotateClump = !Ctrl && !Alt && !Shift && !!(MouseButtons&1);
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TranslateClump = !Ctrl && !Alt && !Shift && !!(MouseButtons&4);
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RotateCamera = Ctrl && !!(MouseButtons&1);
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TranslateCamera = Ctrl && !!(MouseButtons&4);
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ViewXWindow = Shift && !!(MouseButtons&1);
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ViewYWindow = Shift && !!(MouseButtons&4);
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ViewXOffset = Alt && !!(MouseButtons&1);
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ViewYOffset = Alt && !!(MouseButtons&4);
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}
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void
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MouseMove(sk::MouseState *mouse)
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{
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MouseDeltaX = mouse->posx - MouseX;
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MouseDeltaY = mouse->posy - MouseY;
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MouseX = mouse->posx;
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MouseY = mouse->posy;
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if(RotateClump)
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ClumpRotate(Clump, MainCamera, MouseDeltaX, -MouseDeltaY);
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if(TranslateClump)
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ClumpTranslate(Clump, MainCamera, -MouseDeltaX*0.01f, -MouseDeltaY*0.1f);
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if(RotateCamera)
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ViewerRotate(SubCamera, -MouseDeltaX*0.1f, MouseDeltaY*0.1f);
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if(TranslateCamera)
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ViewerTranslate(SubCamera, -MouseDeltaX*0.01f, -MouseDeltaY*0.01f);
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if(ViewXWindow)
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ChangeViewWindow(-MouseDeltaY*0.01f, 0.0f);
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if(ViewYWindow)
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ChangeViewWindow(0.0f, -MouseDeltaY*0.01f);
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if(ViewXOffset)
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ChangeViewOffset(-MouseDeltaY*0.01f, 0.0f);
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if(ViewYOffset)
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ChangeViewOffset(0.0f, -MouseDeltaY*0.01f);
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}
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sk::EventStatus
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AppEventHandler(sk::Event e, void *param)
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{
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using namespace sk;
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Rect *r;
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MouseState *ms;
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ImGuiEventHandler(e, param);
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ImGuiIO &io = ImGui::GetIO();
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switch(e){
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case INITIALIZE:
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Initialize();
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return EVENTPROCESSED;
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case RWINITIALIZE:
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return Initialize3D() ? EVENTPROCESSED : EVENTERROR;
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case RWTERMINATE:
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Terminate3D();
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return EVENTPROCESSED;
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case PLUGINATTACH:
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return attachPlugins() ? EVENTPROCESSED : EVENTERROR;
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case KEYDOWN:
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KeyDown(*(int*)param);
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return EVENTPROCESSED;
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case KEYUP:
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KeyUp(*(int*)param);
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return EVENTPROCESSED;
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case MOUSEBTN:
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if(!io.WantCaptureMouse){
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ms = (MouseState*)param;
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MouseBtn(ms);
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}else
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MouseButtons = 0;
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return EVENTPROCESSED;
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case MOUSEMOVE:
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MouseMove((MouseState*)param);
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return EVENTPROCESSED;
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case RESIZE:
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r = (Rect*)param;
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// TODO: register when we're minimized
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if(r->w == 0) r->w = 1;
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if(r->h == 0) r->h = 1;
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sk::globals.width = r->w;
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sk::globals.height = r->h;
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CameraSizeUpdate(r, 0.5f, 4.0f/3.0f);
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break;
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case IDLE:
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Idle(*(float*)param);
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return EVENTPROCESSED;
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}
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return sk::EVENTNOTPROCESSED;
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}
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Reference in New Issue
Block a user