static void drawStuff(bool picking) {
// Declare an empty uniforms
Uniforms uniforms;
// if we are not translating, update arcball scale
if (!(g_mouseMClickButton || (g_mouseLClickButton && g_mouseRClickButton) || (g_mouseLClickButton && !g_mouseRClickButton && g_spaceDown)))
updateArcballScale();
// build & send proj. matrix to vshader
const Matrix4 projmat = makeProjectionMatrix();
sendProjectionMatrix(uniforms, projmat);
const RigTForm eyeRbt = getPathAccumRbt(g_world, getNodeForEye(g_activeEye));
const RigTForm invEyeRbt = inv(eyeRbt);
const Cvec3 eyeLight1 = getPathAccumRbt(g_world, g_light1Node).getTranslation();
const Cvec3 eyeLight2 = getPathAccumRbt(g_world, g_light2Node).getTranslation();
uniforms.put("uLight", eyeLight1);
uniforms.put("uLight2", eyeLight2);
if (!picking) {
Drawer drawer(invEyeRbt, uniforms);
g_world->accept(drawer);
if (g_displayArcball && shouldUseArcball()) {
drawArcBall(uniforms);
}
} else {
Picker picker(invEyeRbt, uniforms);
// set overriding material to our picking material
g_overridingMaterial = g_pickingMat;
g_world->accept(picker);
// unset overriding material
g_overridingMaterial.reset();
glFlush();
g_currentPickedRbtNode = picker.getRbtNodeAtXY(g_mouseClickX, g_mouseClickY);
if (g_currentPickedRbtNode == g_groundNode) {
g_currentPickedRbtNode = shared_ptr<SgRbtNode>(); // set to NULL
cout << "clicked on ground\n";
}
}
}
// drawStuff just takes in a picking flag, and no curSS
static void drawStuff(bool picking) {
// Declare an empty uniforms
Uniforms uniforms;
// Get your projection matrix into proj mat as usual
...
// send proj. matrix to be stored by uniforms,
// as opposed to the current vtx shader
sendProjectionMatrix(uniforms, projmat);
// get your eyeRbt, invEyeRbt and stuff as usual
...
// get the eye space coordinates of the two light as usual
// suppose they are stored as Cvec3 eyeLight1 and eyeLight2
...
// send the eye space coordinates of lights to uniforms
uniforms.put("uLight", eyeLight1);
uniforms.put("uLight2", eyeLight2);
if (!picking) {
// initialize the drawer with our uniforms, as opposed to curSS
Drawer drawer(invEyeRbt, uniforms);
// draw as before
g_world->accept(drawer);
... // draw arcball if neccessary
}
static void drawStuff(bool picking) {
Uniforms uniforms;
// if we are not translating, update arcball scale
if (!(g_mouseMClickButton || (g_mouseLClickButton && g_mouseRClickButton) || (g_mouseLClickButton && !g_mouseRClickButton && g_spaceDown)))
updateArcballScale();
// build & send proj. matrix to vshader
const Matrix4 projmat = makeProjectionMatrix();
sendProjectionMatrix(uniforms, projmat);
const RigTForm eyeRbt = getPathAccumRbt(g_world, g_currentCameraNode);
const RigTForm invEyeRbt = inv(eyeRbt);
// const Cvec3 eyeLight1 = Cvec3(invEyeRbt * Cvec4(g_light1, 1));
// const Cvec3 eyeLight2 = Cvec3(invEyeRbt * Cvec4(g_light2, 1));
const Cvec3 eyeLight1 = getPathAccumRbt(g_world, g_light1Node).getTranslation();
const Cvec3 eyeLight2 = getPathAccumRbt(g_world, g_light2Node).getTranslation();
uniforms.put("uLight", (Cvec3) (invEyeRbt * Cvec4(eyeLight1,1)));
uniforms.put("uLight2", (Cvec3) (invEyeRbt * Cvec4(eyeLight2,1)));
if (!picking) {
Drawer drawer(invEyeRbt, uniforms);
g_world->accept(drawer);
if (g_displayArcball && shouldUseArcball())
drawArcBall(uniforms);
}
else {
Picker picker(invEyeRbt, uniforms);
g_overridingMaterial = g_pickingMat;
g_world->accept(picker);
g_overridingMaterial.reset();
glFlush();
g_currentPickedRbtNode = picker.getRbtNodeAtXY(g_mouseClickX, g_mouseClickY);
if (g_currentPickedRbtNode == g_groundNode)
g_currentPickedRbtNode = shared_ptr<SgRbtNode>(); // set to NULL
cout << (g_currentPickedRbtNode ? "Part picked" : "No part picked") << endl;
}
if (g_shellNeedsUpdate) {
updateShellGeometry();
}
g_shellNeedsUpdate = false;
}
static void drawArcBall(Uniforms& uniforms) {
// switch to wire frame mode
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
RigTForm arcballEye = inv(getPathAccumRbt(g_world, g_currentCameraNode)) * getArcballRbt();
Matrix4 MVM = rigTFormToMatrix(arcballEye) * Matrix4::makeScale(Cvec3(1, 1, 1) * g_arcballScale * g_arcballScreenRadius);
sendModelViewNormalMatrix(uniforms, MVM, normalMatrix(MVM));
uniforms.put("uColor", Cvec3 (0.27, 0.82, 0.35));
// switch back to solid mode
g_arcballMat->draw(*g_sphere, uniforms);
}
// takes a projection matrix and send to the the shaders
inline void sendProjectionMatrix(Uniforms& uniforms, const Matrix4& projMatrix) {
uniforms.put("uProjMatrix", projMatrix);
}
static void drawStuff(bool picking) {
Uniforms uniforms;
// build & send proj. matrix to vshader
const Matrix4 projmat = makeProjectionMatrix();
sendProjectionMatrix(uniforms, projmat);
// choose frame to use as eyeRbt
RigTForm eyeRbt = getPathAccumRbt(g_world, g_eyeFrameNode);
const RigTForm invEyeRbt = inv(eyeRbt);
// get world space coordinates of the light
Cvec3 light1 = getPathAccumRbt(g_world, g_light1Node).getTranslation();
// transform to eye space, and set to uLight uniform
uniforms.put("uLight", Cvec3(invEyeRbt * Cvec4(light1, 1)));
Cvec3 light2 = getPathAccumRbt(g_world, g_light2Node).getTranslation();
// transform to eye space, and set to uLight uniform
uniforms.put("uLight2", Cvec3(invEyeRbt * Cvec4(light2, 1)));
/*
const Cvec3 eyeLight1 = Cvec3(invEyeRbt * Cvec4(g_light1, 1)); // g_light1 position in eye coordinates
const Cvec3 eyeLight2 = Cvec3(invEyeRbt * Cvec4(g_light2, 1)); // g_light2 position in eye coordinates
// safe_glUniform3f(curSS.h_uLight, eyeLight1[0], eyeLight1[1], eyeLight1[2]);
// safe_glUniform3f(curSS.h_uLight2, eyeLight2[0], eyeLight2[1], eyeLight2[2]);
uniforms.put("uLight", eyeLight1);
uniforms.put("uLight2", eyeLight2);
*/
RigTForm arcballRbt = makeArcballRbt();
if(!(g_mouseMClickButton || (g_mouseLClickButton && g_mouseRClickButton) || (g_mouseLClickButton && !g_mouseRClickButton && g_spaceDown))){
// update arcballScale
g_arcballScale = getScreenToEyeScale((invEyeRbt * arcballRbt).getTranslation()[2], g_frustFovY, g_windowHeight);
}
if (!picking) {
Drawer drawer(invEyeRbt, uniforms);
g_world->accept(drawer);
// draw arcball as part of asst3
if (g_arcballVisible) {
double s = g_arcballScale * g_arcballScreenRadius;
RigTForm MVMrbt = invEyeRbt * arcballRbt;
Matrix4 MVM = rigTFormToMatrix(MVMrbt);
MVM = MVM * Matrix4::makeScale(Cvec3(s, s, s));
Matrix4 NMVM = normalMatrix(MVM);
sendModelViewNormalMatrix(uniforms, MVM, NMVM);
g_arcballMat->draw(*g_sphere, uniforms);
}
} else {//if indeed picking
Picker picker(invEyeRbt, uniforms);
g_overridingMaterial = g_pickingMat;
g_world->accept(picker);
g_overridingMaterial.reset();
glFlush();
g_currentPickedRbtNode = picker.getRbtNodeAtXY(g_mouseClickX, g_mouseClickY);
if (!g_currentPickedRbtNode || g_currentPickedRbtNode == g_groundNode)
g_currentPickedRbtNode = g_eyeFrameNode;
g_arcballVisible = (g_currentPickedRbtNode != g_eyeFrameNode || (g_currentPickedRbtNode == g_skyNode && g_skyModMode == 0));
g_arcballScale = getScreenToEyeScale((invEyeRbt * arcballRbt).getTranslation()[2], g_frustFovY, g_windowHeight);
}
}
