//
//  pipet_view.c
//  PIPET-1
//
//  Created by dianshi on 3/28/20.
//  Copyright © 2020 dianshi. All rights reserved.
//

#include "pipet_view.h"

int pv_init(pipet_view *pv, int32_t max_dots, int32_t w, int32_t h)
{
    pv->dots_size = max_dots;
    
    pv->dots = malloc(sizeof(uint64_t)*max_dots);
    memset(pv->dots,0,sizeof(uint64_t)*max_dots);
    
    pv->dots_relative = malloc(sizeof(float)*max_dots);
    memset(pv->dots_relative,0,sizeof(float)*max_dots);
    
    pv->width = w;
    pv->height = h;
    pv->cur_dot = 0;
    
    return 0;
}

int pv_set_color(pipet_view *pv, int32_t color)
{
    pv->color = color;
    
    return 0;
}

int pv_add_dot(pipet_view *pv, uint64_t val)
{
    int i=0;
    float f = 0.0f;
    
    pv->dots[pv->cur_dot] = val;
    pv->cur_dot = (pv->cur_dot+1)%pv->dots_size;
    
    if (val > pv->max_dot_value)
    {
        pv->max_dot_value = val;
        //printf("New max value %d\n",val);
    }
    
    for (i=0;i<pv->dots_size;i++)
    {
        f = 1.0f*pv->dots[i]/pv->max_dot_value;
        
        //pv->dots_relative[i] = (uint8_t)(f*255);
        pv->dots_relative[i] = f;
        //printf("%.3f %f (%d-%d) ",f, pv->dots_relative[i], pv->dots[i], pv->max_dot_value);
        
    }
    printf("Max:%d K Val:%d K \n",pv->max_dot_value/1024,val/1024);
    
    return 0;
}


int pv_destroy(pipet_view *pv)
{
    free(pv->dots);
    free(pv->dots_relative);
    return 0;
}

int pv_draw_texture(pipet_view *pv, SDL_Renderer *renderer, int x, int y)
{
    SDL_SetRenderDrawColor(renderer, 255, 0, 0, 255);
    SDL_RenderDrawPoint(renderer,x,y);
    return 0;
}


int pv_render(pipet_view *pv, SDL_Renderer *renderer)
{
    int i;
    float f=1.0f*pv->width/pv->dots_size;
    float fx = 0.0f;
    
    for (i=0;i<pv->width;i++)
    {
        fx+=f;
        pv_draw_texture(pv, renderer, fx, (pv->height-pv->height*pv->dots_relative[i]-1));
    }
    
    return 0;
}