48 lines
1.5 KiB
C++
Executable File
48 lines
1.5 KiB
C++
Executable File
#include "UserInteraction.h"
|
|
#include <GL/glew.h>
|
|
#include <iostream>
|
|
#include <cmath>
|
|
|
|
UserInteraction::UserInteraction(Renderer* renderer, CgPointFixNode* fixer, float* vbuff)
|
|
: renderer(renderer), vbuff(vbuff), fixer(fixer), i(-1) {}
|
|
|
|
void UserInteraction::setModelview(const glm::mat4& mv) { renderer->setModelview(mv); }
|
|
void UserInteraction::setProjection(const glm::mat4& p) { renderer->setProjection(p); }
|
|
|
|
void UserInteraction::grabPoint(int mouse_x, int mouse_y){
|
|
// render scene
|
|
glClearColor(0, 0, 0, 0);
|
|
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
|
glDisable(GL_FRAMEBUFFER_SRGB);
|
|
renderer->draw();
|
|
glFlush();
|
|
|
|
// read color
|
|
color c(3);
|
|
glReadPixels(mouse_x, mouse_y, 1, 1, GL_RGB, GL_UNSIGNED_BYTE, &c[0]);
|
|
i = colorToIndex(c);
|
|
if (i != -1) fixer->fixPoint(i);
|
|
|
|
// return to normal state
|
|
glClearColor(0.25f, 0.25f, 0.25f, 0);
|
|
glEnable(GL_FRAMEBUFFER_SRGB);
|
|
}
|
|
|
|
void UserInteraction::releasePoint() { if (i == -1) return; fixer->releasePoint(i); i = -1; }
|
|
void UserInteraction::movePoint(vec3 v) {
|
|
if (i == -1) return;
|
|
fixer->releasePoint(i);
|
|
for(int j = 0; j < 3; j++)
|
|
vbuff[3 * i + j] += v[j];
|
|
fixer->fixPoint(i);
|
|
}
|
|
|
|
GridMeshUI::GridMeshUI(Renderer* renderer, CgPointFixNode* fixer, float* vbuff, unsigned int n)
|
|
: UserInteraction(renderer, fixer, vbuff), n(n) {}
|
|
|
|
int GridMeshUI::colorToIndex(color c) const {
|
|
if (c[2] != 51) return -1;
|
|
int vx = std::round((n - 1) * c[0] / 255.0);
|
|
int vy = std::round((n - 1) * c[1] / 255.0);
|
|
return n * vy + vx;
|
|
} |