Program Listing for File radialanimation.cpp

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#include <math.h>
#include "radialanimation.h"

namespace PixelMaestro {
    RadialAnimation::RadialAnimation(Section& section) : Animation(section) {
        type_ = AnimationType::Radial;
        map();
    }

    uint8_t RadialAnimation::get_resolution() const {
        return resolution_;
    }

    void RadialAnimation::map() {
        if (orientation_ == Orientation::Vertical || orientation_ == Orientation::VerticalFlipped) {
            // For each Pixel, calculate the slope from the center.
            for (uint16_t y = 0; y < dimensions_.y; y++) {
                int16_t y_distance = y - center_.y;
                for (uint16_t x = 0; x < dimensions_.x; x++) {
                    if (x == center_.x || y == center_.y) {
                        set_map_color_index(x, y, 0);
                    }
                    else {
                        int16_t x_distance  = x - center_.x;
                        double slope = (y_distance / (float)x_distance);
                        set_map_color_index(x, y, static_cast<uint16_t>(slope * resolution_) % 255);
                        // set_map_color_index(x, y, static_cast<uint16_t>(((y - center.y) / (float)(x - center.x)) * resolution_) % 255);


                    }
                }
            }
        }
        else {  // Horizontal
            // For each Pixel, calculate its distance from the center of the grid, then use the distance to choose the index of the correct color.
            for (uint16_t y = 0; y < dimensions_.y; y++) {
                double y_squared_ = pow(y - (float)center_.y, 2);
                for (uint16_t x = 0; x < dimensions_.x; x++) {
                    double x_squared = pow(x - (float)center_.x, 2);
                    double distance = sqrt(x_squared + y_squared_);
                    set_map_color_index(x, y, static_cast<uint8_t>(distance) % 255);
                }
            }
        }
    }

    void RadialAnimation::set_resolution(uint8_t resolution) {
        this->resolution_ = resolution;
        map();
    }

    void RadialAnimation::update() {
        update_cycle(0, palette_->get_num_colors());
    }
}